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ablative bottom paint

How to Apply Water-based Antifouling to Wooden Boats

Antifouling paint can be applied to many different substrates including wooden boats. What is the recommended procedure for preparing the surface? Is a primer needed? What paint should I use? This article should answer all those questions. The Bottom Paint Store has 3 water-based antifouling products: Aquagard, Sea Hawk Monterey, and Interlux Fiberglass Bottomkote Aqua.

Aquagard Water-based Antifouling Bottom Paint

When applying antifouling paint to wooden boats, primer is optional. Antifouling paint can seep into the wood grain and create a strong bond. Usually, the first coat is thinned 10% to assist in penetrating the wood grain. Then the subsequent coats can be applied normally.

If adhesion is a major concern, then primer will promote adhesion. There are 2 Aquagard primers to choose from: 181 Solvent based primer and 190 Water based primer. They both accomplish the same task, but the water-based version has less VOC’s (volatile organic compounds). If you choose to use a solvent based primer and then a water based paint, make sure the primer is completely cured before proceeding. You can read the full application instructions on the Aquagard product page.

 Monterey Self Polishing Solvent Free Bottom Paint

When applying Sea Hawk Monterey to a wood hull, no primer is needed. You can use the same method of thinning the product to allow it to seep into the wood grain. If the wood can accept more paint after the first coat, you can repeat the process a second time. Here is the step by step process for Monterey:

Step 1 – CLEAN SURFACE

Surface must be clean, dry and free of contaminants.

Step 2 – SAND & CLEAN

Sand to a uniformly frosty, dull looking surface with 80-100 grit (no finer) sandpaper; remove any residue.

Step 3 – APPLY ANTIFOULANT

Apply two coats of Sea Hawk antifouling by brush, roller or spray. Apply first coat thinned 10% and let dry overnight. Apply two more coats of bottom paint allowing 3 to 6 hours between coats and a minimum overnight dry.

Interlux Fiberglass Bottomkote Aqua

BARE WOOD: It is essential to remove all contaminants from the surface prior to sanding and overcoating.

Sand with 80 grit paper.

Clean with Special Thinner 216. Repair any defects with Watertite Epoxy Filler.

Lightly sand and wipe clean. Surface must be free from all contamination.

Fill seams, if necessary, with Seam Compound Brown 30.

Apply first coat of Fiberglass Bottomkote® Aqua thinned with clean water (do not add more than 10% by volume).

Liquid Urethane Uses and Differences in Density

When most people hear the term “Liquid Urethane,” they think of a thick, black substance used for coating surfaces. While this is correct, Liquid Urethane comes in many varieties with different purposes. For example, some Liquid Urethanes are designed to be applied very thin while others are much thicker. Additionally, there are variations in terms of density – some liquids are denser than others – which affects how they should be used. In this blog post, we will look at what Liquid Urethane is, what its various uses are, and how density affects its application.


What is liquid urethane and what are its uses


Urethane is a liquid polymer that has a wide variety of uses. It is used in the production of plastics, coatings, adhesives, and sealants. Liquid urethane is also used as an insulation material and as a filler for composite materials. In addition, liquid urethane can be used to create dental implants and prosthetic devices.

How is liquid urethane density measured?


To measure the density of liquid urethane, you’ll need a graduated cylinder and a weight scale. First, weigh the graduated cylinder on the scale to get an empty weight. Then, fill the cylinder with liquid urethane and weigh it again. Subtracting the empty weight from the full weight will give you the total weight of liquid urethane in the cylinder. To calculate the density, simply divide this weight by the volume of liquid urethane in the cylinder. This will give you a density measurement in grams per cubic centimeters (g/cc).


The density of liquid urethane is measured in a variety of ways, depending on the intended use of the urethane. For example, the weight per gallon is often used to calculate the costs of shipping and handling. The pound per cubic foot is also used to calculate the volume of urethane needed for a given job. In both cases, the density of liquid urethane is calculated by dividing the weight of the urethane by its volume.

What factors affect the density of liquid urethane


The density of liquid urethane can be affected by a variety of factors, including its composition, temperature, and pressure. Urethane is a polymer that can be made from a variety of monomers, or small molecules. The type of monomer used will affect the urethane’s density. For example, using a heavier monomer will result in a denser urethane. Temperature can also affect the density of liquid urethane; as temperature increases, the urethane will expand and become less dense. Finally, liquid urethane is usually stored under pressure to keep it from expanding. If the pressure is too high, the liquid urethane can become dense and difficult to work with. By understanding these factors, it is possible to control the density of liquid urethane and choose the right product for your needs.


There are many factors that can affect the density of liquid urethane. The first is the temperature of the liquid urethane. The colder the liquid urethane, the denser it will be. The second factor is the pressure of the liquid urethane. The higher the pressure, the denser the liquid urethane will be. The third factor is the type of liquid urethane. Some types of liquid urethane are denser than others. The fourth factor is the amount of liquid urethane. The more liquid urethane there is, the denser it will be. Finally, the fifth factor is the presence of impurities in the liquid urethane. If there are impurities present, they can make the liquid urethane denser.

Examples of where to use liquid urethane with different densities


There are many different uses for liquid urethane. The material can be used as a sealant, adhesive, or even a casting material. When choosing a liquid urethane, it is important to consider the density of the material. A high-density urethane may be better suited for a heavy-duty application, while a low-density urethane may be more suitable for a lightweight application.


Here are some examples of where to use liquid urethane with different densities:

  • Use a high-density urethane as an adhesive for bonding metal to concrete.
  • Use a low-density urethane as a sealant for gaps and cracks around doors and windows.
  • Use a medium-density urethane as a casting material for creating prototypes or models.
    No matter what the application, liquid urethane can be a versatile and durable solution. By carefully selecting the right density for the job, it is possible to achieve excellent results.

How to select the right liquid urethane for your needs

How do you know which one is right for your project? Here are a few things to keep in mind:
The first thing you need to consider is what you’ll be using the liquid urethane for. There are different formulas for different applications, so you need to make sure you get the right one.


Next, think about the properties you need your liquid urethane to have. For example, do you need it to be clear or opaque? UV resistant? Heat resistant? Each type of liquid urethane has different properties, so it’s important to select the one that best meets your needs.


Once you’ve narrowed down your choices, it’s time to start testing. The best way to do this is to buy small quantities of each type of liquid urethane and try them out. This will help you see how they perform in real-world conditions and narrow down your options even further.


Finally, once you’ve selected the liquid urethane that’s right for you, make sure to follow the manufacturer’s instructions carefully. This will help ensure that you get the best results and avoid any problems down the road.

liquid urethan kits

It is important to select the right liquid urethane for your needs to get the best results out of this versatile product. By understanding how density factors into its uses, you can be sure to select the correct liquid urethane for your specific project. Bottom Paint Store carries several different liquid urethane products including liquid urethane foam kits, which are a two-component, Isocyanate/Polyol based, pour-in-place, urethane foam system and Interlux Brushing Liquid 333, a slow drying solvent to ease brushing and facilitate the flow of specified paint coatings.

If you need additional information or ordering assistance on these liquid urethane products call our customer service team Monday through Friday 9:00 a.m.-5:00 p.m.

The different uses for Hawk Epoxy

If you’re a boat owner, there’s a good chance you’re familiar with Hawk Epoxy by SeaHawk Paints; however, did you know there are several diverse ways to use it? In this post, we’ll take a look at some of the different ways Seahawk Hawk Epoxy can be used to keep your boat in top condition. So, whether you’re a beginner or an experienced boater, read on for some helpful tips!


What is epoxy?


Epoxy is a type of adhesive that is commonly used to bond two surfaces together. It is made up of a resin and a hardener, which are mixed together to form a tough, durable bond.

Unlike other sealants, epoxy is able to form a strong bond with the surface it is applied to, making it an ideal choice for sealing concrete, metal, and glass. Epoxy is also resistant to temperature changes and UV light, making it ideal for use in outdoor applications. In addition to its practical benefits, epoxy can also be used to create interesting visual effects. When applied to a surface in thin layers, epoxy can create a marbled or even tie-dye effect. As a result, epoxy is a versatile material that can be used for both functional and decorative purposes.Epoxy is typically used for repairing metal, plastic, and glass.

It can also be used for bonding wood, concrete, and ceramic. Epoxy is available in both liquid and powder form. The liquids are typically used for small repairs, while the powders are better suited for larger projects. Epoxy is typically applied with a brush or roller. Once it has been applied, it needs to be allowed to cure for 24 hours before it can be used.

Hawk Epoxy can be used as a sealant to protect surfaces from water and other elements.

Hawk Epoxy

Fairing Hull Imperfections with Hawk Epoxy


Let’s face it, our boats take a beating. They’re exposed to the sun, the salt, the waves, and the wind on a daily basis. So, it’s no wonder that even the best-kept boats can start to show their age after a few years. One of the most common problems is fairing hull imperfections. These are small cracks or indents in the gelcoat that can make your boat look old and worn. But don’t despair, there is a simple way to fix this problem with hawk epoxy.
Hawk epoxy is a two-part epoxy resin that you mix together to create a putty-like substance. Once it’s mixed, you can use it to fill in any cracks or indentations in your hull. It dries hard and sets fast, so you can sand and paint over it once it’s dry. And best of all, it’s very affordable. So, if your boat is starting to look a little worse for wear, don’t worry, just grab some hawk epoxy, and give your boat a facelift.

Patching Holes in a Boat with Hawk Epoxy


There’s nothing worse than getting your boat out on the water only to find that it’s taking on water. Fortunately, patching holes in a boat is relatively easy to do, as long as you have the right materials.

Hardware Replacement Adhesion with Hawk Epoxy


Hawk epoxy’s two-part epoxy provides a strong, permanent bond and can be used on a variety of materials, including metal, glass, ceramic, and plastic. And it sets in just minutes, so you won’t have to wait around for hours for it to dry. Plus, it’s easy to use – just mix the two parts together and apply it to the surfaces you want to bond.

Hawk Epoxy Proper Measuring and Mixing


Anyone who has ever worked with epoxy knows that it is crucial to get the measuring and mixing process exactly right. Too much or too little of either ingredient can ruin the entire batch, and that can be a costly mistake. Hawk Epoxy strives to make the measuring and mixing process as simple and foolproof as possible. Our epoxy products come with clear instructions and easy-to-use tools that make it easy to get the perfect mix every time. If you follow the provided instructions, you can be confident that your epoxy project will turn out just the way you want it to.

Applying Hawk Epoxy


Hawk epoxy is specifically designed for use on boats, and it’s perfect for patching small holes. The epoxy comes in two parts that you mix together, and then it can be applied directly to the hole.
Sometimes, you need something more than just epoxy resin. That’s where Hawk epoxy fiberglass cloth and mat come in. The cloth and mat help to reinforcing the epoxy, making it stronger and more durable. They can be used to repair cracks, leaks, or holes in a variety of surfaces, including concrete, metal, glass, and wood. Best of all, the cloth and mat are easy to apply and can be cut to fit any size or shape. So, whether you’re patching up a small crack or fixing a large hole, Hawk epoxy fiberglass cloth and mat can help you get the job done right.
First, clean the area around the hole with sandpaper to make sure that the epoxy will adhere properly. Then, mix the epoxy according to the instructions and apply it to the hole. Once it dries, the epoxy forms a strong bond that will keep the hole sealed. It is important to note that the curing time may vary depending on your temperature and humidity levels.
Once properly applied and cured your boat will be good as new – no leaks guaranteed!

Sealing a Fiberglass Hull with Hawk Epoxy


Sealing a fiberglass hull with epoxy is a great way to extend the life of your boat. Epoxy is a strong, durable material that will create a waterproof barrier between the hull and the water. It is important to properly prepare the surface before applying the epoxy, and to follow the manufacturer’s directions closely. Once the epoxy has been applied, it is important to allow it to cure properly before using the boat. With proper preparation and care, sealing a hull with epoxy will help to keep your boat in good condition for many years to come.


How to apply Hawk Epoxy


Epoxy is a type of synthetic resin that is often used as an adhesive or coating. It is typically made up of two parts that are mixed together and then cured to form a hard, durable finish. Hawk Epoxy by SeaHawk paints is a two-part epoxy that can be used for a variety of applications, including bonding, coating, and laminating. Before using Hawk Epoxy, it is important to read the instructions carefully and to follow all safety precautions. Once you have mixed the two parts of the epoxy together, you will have a limited time to apply it before it begins to set. For best results, apply the epoxy to a clean, dry surface and use a brush or roller to spread it evenly. Once it has been applied, the epoxy will need to cure for 24 hours before it is fully cured. However,

Hawk Epoxy is a versatile product that can be used in many different ways. We’ve highlighted just a few of the potential applications for this amazing adhesive. If you have questions for how to use Hawk Epoxy or need help bringing your boat painting project to life, contact the Bottom Paint Store customer service team Monday through Friday 9-5 EST 888-505-2313.

How to gelcoat a jet ski

If your jet ski or waverunner hull is made of fiberglass then gelcoat can be an excellent restoration option. Gel coating a jet ski is a great way to keep it looking new and protect the surface from scratches and dings. It’s also a relatively easy process that most people can do in a few hours. In this blog post, we’ll walk you through the steps of how to gelcoat a jet ski. We’ll also provide some tips on how to make the process go as smoothly as possible.

What is gelcoat and what does it do

Gelcoat is a type of resin that is used as a protective coating on many boats, jet skis, and wave runners. It is applied to the hull of the vessel in order to provide a shiny, smooth finish. In addition to its aesthetic benefits, gelcoat also helps to protect the hull from UV damage, scratches, and other types of wear and tear. In some cases, gelcoat can even help to repair minor damage to the hull. As a result, gelcoat is an essential part of any boat or jet ski owner’s arsenal. While gelcoat can help extend the life of your jet ski or wave runner, it is not indestructible. Over time, it can become dulled or scratched, and it may eventually need to be replaced.

How to clean and prep the jet ski surface before you start

To clean the jet ski, you’ll need a mild soap, a soft cloth, and a jet ski brush. Start by mixing the soap and warm water in a bucket. Then Wet the jet ski with the soapy water and use the brush to scrub away any dirt or grime. Rinse the jet ski off with clean water and dry it with a soft cloth. For tough grease and dirt spots you can use a degreaser. This will remove any dirt, grime or grease that could prevent the paint from adhering properly.

Finally, inspect the jet ski for any cracks, chips or other damage. If you notice any of these, make sure to get them repaired before applying gelcoat. Use a fine-grit sandpaper to smooth out any rough spots. Gel coat repair kits, scratch patch kits, gel coat paste, fiberglass repair kits come with everything you need for small repairs.

Applying the gelcoat to your jet ski, wave runner

Applying gelcoat to a jet ski is a great way to protect your investment. Gelcoat is a clear or colored coating that is applied to the surface of a jet ski to protect it from the elements. It is also used to give the jet ski a high gloss finish. Gelcoat is available in both spray and brush-on versions. The brush-on version is generally easier to apply, but the spray version will give you a more even coverage. When applying gelcoat, be sure to follow the manufacturer’s instructions carefully. In general, you will want to apply several thin coats rather than one thick coat. Be sure to allow each coat to dry completely before applying the next one. Once the gelcoat has been applied, you will need to buff it out to achieve a high gloss finish. Once the final coat of gelcoat has been applied, the jet ski should be allowed to cure for 24 hours before being launched.

It’s important to choose the right gelcoat. There are dozens of different formulations on the market, so it’s important to do your homework and consult your owner’s manual. Once you’ve selected the right gelcoat, the next step is to apply it correctly. One common mistake is to apply too much gelcoat, which can lead to runs and sagging. It’s important to apply a thin, even coat and then allow it to cure properly before sanding or buffing.

With these tips in mind, your gelcoat project should be easier. Just remember to take your time and follow all instructions carefully, and you’ll soon be enjoying your jet ski on the open water. If you have any questions about selecting the right gel coat for your watercraft, please call the Bottom Paint Store customer support team 888.505.2313.

Bottom Paint Store Customer Reviews

We strive to provide outstanding customer service. The following reviews were collected by Verified Reviews, an independent third party that specializes in the collection, moderation and display of ratings and reviews from actual customers. Below are some of the 5 star reviews from our customers.

Amazing fast quick customer service! Wry friendly and they had all my previous orders pulled up and on hand when I called which made the entire process seamless and fast! Love these guys! Chandler F.

Very friendly and helpful. They came through for me, and I really appreciated it. Mike T.

Dustin was extremely helpful, knowledgeable and personable when helping me with my order. Daniel W.

Outstanding service and response, excellent pricing too. Robert T

Great to deal with, super fast shipping Sven J.

Great customer service. We had a shipping error on the original order, and they corrected if promptly and hassle-free. Highly recommend! Chris J

Prompt and attentive service…. Well Done ! Gene I.


Received my order in a timely manner Michael L.


Talked to Hey personnel answered all my questions what is very patient couldn’t ask for anything better Jerry Y.

Fast shipping. Exactly what I wanted. I would recommend Tim R.


The bottom paint store is first rate. Product arrived in a few days and was well packed, and I can’t argue with the price along with free shipping. Donald R.

Appreciate the quick delivery. Greg R.


Quick and outstanding packaging it was shipped in. William S.

Easy, ordered by phone. Talked with assistant and made order. Two Fisted
Great service,fast shipping very pleased Tom R.


Site was easy to order. Especially liked the chat when I had a question, was promptly answered. Cheryl D.

I’ve not used it yet, but the purchasing experience was fast and effortless and the delivery was on time and reasonable. I’m happy with my decision to use this store to get my paint quickly with no issues. Thank you ! Cindi C.


Everything went according to plan. The only issue I had was I did receive a tracking number but I believe it has to do with permissions in my e-mail client. I called for help and the gent was right on it. The product was shipped and arrived in a timely manner. BPS is now in my contacts folder for paint…..Greg M.

Competitvely priced, quick delivery, have used them many times and always good service. Ken C

Great business, and prompt customer service. Victor M.

Finding the product I wanted was simple and fast. Checkout was a breeze. I will definitely purchase again from bottom paint store.com Greg T.


Great service and quick shipping Kurt J.

I’ll definitely br ordering from you again! Ginger T.


Informative, easy ordering, on time delivery. Richard K.


Quick fast delivery. Mark L.


Mark Lanzotti Lennie S.


Site is easy to navigate and find the bottom paint I wanted. Checkout was easy also. Lennie S.


Excellent customer service Theodore S.


Good products at the right price Richard S.

Always professional, great prices and service.

PropGlide™ Reviews

PropGlide USA Corp began its innovative approach to solving the issue of fouling on the props and running gear of vessels back in 2006. Since then PropGlide has perfected the formulation, achieved remarkable results, and has become the best affordable solution for boaters worldwide.

PropGlide™ Customer Reviews

The following reviews are provided by actual customers who have purchased either the PropGlide™ 250ML Foul Release Small Kit, PropGlide™ 625ML Foul Release Medium Kit, or the PropGlide™ 1250ML Foul Release Large Kit and have submitted a product review through Verified Reviews, an independent, trusted third party review provider that specializes in the collection, moderation and display of ratings and reviews. The reviews can be found on each of the respective product pages or on the Bottom Paint Store Verified Reviews account page.

“Highly rated product”.- Scott H

“Great tried something last year and came back to PropGlide this year.- Carl R.


PropGlide is an excellent protective coating for my propellers.- Louis S.


Easy to use. Too soon to comment on how it works. My boat is not yet in the water.-
Goes on as described, the prep is the hard part. We will see how it works when I drop it in the water in the new few weeks. Expect it to work as advertised. I ended up with the medium kit and it was way too much for me. 2 – 3 bladed props about 12 inch blades plus the shafts. Better to have too much than too little I guess but next time I will order the small instead of medium.”

“I have used it before and (it) works great.”

“Easier to apply than Propspeed. Almost twice as long between the primer and the top coat.”


“It’s always nice to be able to order and receive in a timely fashion what you need for your boat running gear.”- Curtis S.


“Easy to apply, looks good.”- Greg D.

“Just applied it. We will see how it works during the coming season”.- Shawn H.

“Product works great and is a reasonable price.”


“Excellent. Love this product. Strongly recommend.”

“I have not had time to apply the Prop glide yet. I just received it this evening.” – Mike Z

“Good product. Less expensive than PropSpeed. Great price”!

“Product works well on running gear when applied properly. Follow instructions on application”.- Charles O.


“Works as advertised”.- Raymond R.

The following testimonial was provided outside of Verified Reviews.

“We applied PropGlide to the propellers and rudders on our 42′ power catamaran in March 2016. We have found excellent results so far with very little growth appearing on the running gear. We have been able to maintain great boat speed, excellent economy and no vibrations unlike previous years with using other products. Our Applicator has even commentated how much easier PropGlide is to apply compared to its competitors.” – Mick M.

If you have any questions about foul-release coating systems for your underwater propellers and running gear please see our numerous how to articles on PropGlide or you can call our technical support team 888-505-2313.

Filler Options for Gelcoats and Resins

There are many common fillers used with gelcoat and resin and here we’ll help you pick the one that is right for you.

When using putty, a good rule is not to go higher than 1/8″ thick without adding a layer of glass to prevent any issues. With the various fillers, for the right working consistency, you’ll want about 60-70% mix to resin ratio.

Milled Fibers: Finer than chopped glass, makes a harder putty that is strong and coarse.

Walnut Shells: Brown in color and preferred for wood putty or nonskid since it has large particles. Good Strength and darker pigment.

Phenolic Microballons

Microballoons or Microspheres: Phenolic spheres are generally plastic or glass and hollow, intact spheres that are lightweight. This is ideal for making fairing compounds. The Microballoons are a more expensive option for filler.

Fumed Silica: Also known as Cabosil FIller or Aerosil Filler. This is a hydrophilic fumed silica. Fumed Silica provides little change to weight, color, or physical properties after cure, used in resins and gelcoats to make them hang on vertical surfaces, (too much can cause porosity.)

Cotton Flock: Made from pieces of cotton and thickens to an off-white color. Great for bonding many substrates, especially wood. The mixture also creates a multipurpose adhesive for many other substrates in addition to providing excellent substrate wetting and penetrating characteristics. Increases impact and abrasion resistance.

Chopped Glass Fibers

Chopped Glass: These are the biggest pieces of fillers and are most popular for use with resin putty. Perfect for corners, crack resistant, and doesn’t affect pigmented gelcoat. 1/4″ glass fibers make the strongest glass reinforced putty.

Pettit Paint Reviews

Customer Reviews of Pettit Paints

Pettit Marine Paints offers a number of high-performance products, from topside paints to antifoulant bottom paints and everything in-between, some brand names include Trinidad, Easypoxy, Odyssey, Triton, and Black Widow covered. Pettit Paints plant is located in Rockaway, New Jersey, and its products are available throughout the world.

Below are some of the Pettit Reviews we have received from customers through Verified Reviews, an independent rating service.

Pettit Vivid Reviews

Pettit Vivid Antifouling

A very effective bottom paint for the Great Lakes. – David B.

Compromise between more ablative and full hard paint for your hull. – Bert R.

I haven’t used the paint yet but I expect it will live up to its reputation. – Tom Z.

The best paint.

Pettit Trinidad Pro Reviews

Trinidad Pro

We first used Pettit Trinidad Pro on my sail boat in 2014. Now in 2021 a full 7 years later we have to repaint. Probably should have repainted last year but regardless of 7 years or only 6 years of effective coverage its amazing. Virtually no bottom growth for 6 years – WOW. This would be my permanent choice for bottom paint if Pettit were not finally giving up the fight. – Michael H

The delivery was fast but the gallon can was badly damaged due to the weight of the product inside. Nothing wrong with the contents and the package did have a red warning label Do Not Drop. Can’t blame the store, just the shipper. – Robert K

Used before it’s great.

Pettit Black Widow Bottom Paint Review


Pettit Black Widow Racing Antifouling, Black

Went on thin but easily. Definitely needs two coats as the sanding/buffing to bring out the best in the product was worn through on edges/thin spots. Seems very slick….first time trying this one.

I will know more later in the summer and beyond. I am hopeful that it is as good it sounds. I tried a roll and tip method for applying the two coats of paint, and it sets up too quickly for that, so I think it would be applied better by either roller or brush alone.

Pettit HRT Paint Reviews

Unepoxy HRT, By Pettit

I love this paint. This is my fifth year, and only have had to do some touch up on the boat bottom. Excellent. – Fran Z.

Love this product have used it many times before on several cruisers and fast boats always greatly impressed with the outcome.

The Many Uses of Polyurethane Paint and Coatings

Polyurethane paint, also referred to as PU paint or PU coating, is a durable, highly-resistant coating used in industrial and architectural coating systems. It is popular in the marine industry and is used for numerous applications including coatings, rigid and flexible foams, and varnishes. It is also used in steelwork, concrete, wood, and other substrates.

Polyurethane is a reaction polymer, a combination of a polyol resin and an isocyanate hardener or curing agent. Essentially, a polyurethane coating is a liquid plastic which dries to form a paint-like film on an underlying substance or layer. Polyurethane paint provides durability, resistance to chemicals, water, abrasion, and temperature, as well as an attractive glossy finish. The most common application of polyurethane is as a solid foam, accounting for approximately 60% of all polyurethane produced.

Marine Polyurethane Clear Coat

Polyurethane can be used to protect a boats paint and to keep the finish on wooden marine vessels visually appealing and more durable. You can apply polyurethane over any type of paint if it is clean and prepared properly. Polyurethane coatings can be applied to exposed wooden surfaces to create a glossy finish that serves to repel water, resist corrosion, and protect from scratches, stains, and UV damage.

Blue Water Marine Mega Gloss Polyurethane

Mega Gloss by Blue Water Marine is a single component topside polyurethane enamel that can be used on fiberglass, wood, aluminum, and steel. It provides a hard protective coating for super high gloss, color retention, and long durability. Mega Gloss is fast drying which when brushed or rolled, it can also be sprayed, and offers a smooth finish, is resistant to tough chemicals, cleaning solutions and ultraviolet light.

Polyurethane Foam Uses

Sea Hawk Polyurethane Foam

Sea Hawk polyurethane foam is urethane foam that provides excellent flotation, soundproofing or insulation. Mixed 1:1 and easy to install in hard-to-reach places. Poly-U-Foam bonds to wood, metal, and fiberglass. It foams wherever it is poured and is impervious to solvents and gasoline. A 2-quart kit will yield 2.5 cubic feet of space. Available in 2lb density. It is advised not to use below 70°F.

Liquid Urethane Foam Kit

Liquid urethane foam is a closed cell foam that comes in varied sizes, most commonly 2LB, 4LB, 8LB and 16LB densities. This two-part liquid, expanding rigid urethane foam is a closed cell, pourable foam, which will resist the absorption of water. It is the ideal boat foam for structural applications as it is resistant to water penetration and can be used for flotation, insulation, casting, carving, sculpting, sign making and areas where an extremely durable (you can penetrate with a fingernail) while it cannot be dented by hand, making it ideal for support.

Pettit Easypoxy/ EZ-Poxy

Pettit EZ-Poxy is an advanced one-part polyurethane topside and deck enamel. It’s a high gloss finish flows well when applied with a brush. It is a modern one-part polyurethane topside and deck enamel. It It’s use of silicone provides a brilliant shine and easy brush-ability. Its advanced ultraviolet filters enhance the superior gloss retention and durability of polyurethane. The result is a topside finish that is exceptionally easy to apply, producing a lasting gelcoat-like brilliance with a minimum of effort. It is more economical, requires less effort, and is more forgiving than the competition.

Easypoxy’s innovative ultraviolet filters improve gloss retention and enhance the polyurethane’s durability. This results in an end product that is simple to apply and easily creates an enduring shine and superior gloss retention, similar to that of polished gelcoat. Pettit Easypoxy is available in numerous colors.

Interlux Spray Reducing Solvent

Interlux’s Reducing Solvent 2316N is for use in specific two-part polyurethane and epoxy products. It is an amazingly effective, fast evaporating solvent. Safe for aluminum outdrives. Refer to the specific product directions for the amount to be used.

Interlux Pre-Kote

Pre-Kote® is a unique V.O.C. compliant, single package, undercoater or primer for use with Brightside® Polyurethane, Yacht Enamels, or anyone-part topside finish. Microspheres give Pre-Kote® superior build and hide while improving flow and sandability. Use anywhere above the true waterline where a coating is needed to provide a smooth, fair surface for overcoating with a topside enamel.

Interlux Goldspar Satin Varnish

Designed for interior wood surfaces, Interlux Goldspar Satin Varnish is a modified polyurethane low luster varnish. It produces a rich satin sheen finish that resists scratches and stains and applies easily enough to yield truly professional results by either brush or spray. It’s low luster finish makes it ideal for cabin soles, cabinets, counters, tables, as well as home interior finishes.

Urethane Paint

Urethane paint was created in the mid-1960s, utilizing newly developed plastics technology, and designed to be superior to enamel paint in terms of durability by mixing pigment with polyurethanes, which act as the binder to hold the pigment molecules together. Semi-gloss urethane paints have been developed, but all urethane paint will have some degree of glossiness, because the same properties that make it resilient also make it reflect light. It has become a staple in the marine and automotive industry because of its durability.

AwlGrip Topcoat

AwlGrip Topcoat is a polyester based high gloss polyurethane topcoat giving long lasting gloss and color retention. It can only be applied above the waterline of your boat by either a brush, roller, or spray. You should apply Awlgrip Topcoat in two coats of 1.5 to 2.5 mils WFT each and allow 16 hours between each coat. Sanding between coats with 280 to 400 grit paper will provide a smoother finish.

Interlux Perfection Plus

Considered by many as the ultimate clear wood varnish, Interlux Perfection Plus is a high-performance clear polyurethane, offering multiple solutions from one product delivering the ultimate in clear wood coating performance. The chemical cure urethane formulation combines with a best-in-class UV and HALS package to offer outstanding chemical and abrasion resistance, and superb gloss and gloss retention. It typically lasts four times longer than conventional one-part varnishes and can is suitable for all woods, including teak.

Care and Maintenance of Awlgrip HDT

Awlgrip HDT Base

DO:
1. Wash the surface regularly with Awlwash (73234) or Awlwash 2.0 (73235) and water.
2. Use only mild solvents to remove stubborn stains. Awlprep T0008, mineral spirits and xylene are acceptable for use on Awlgrip HDT.
Do not allow solvent to dry on the surface or puddle and soak into the surface. Wash these areas with Awlwash and water to remove solvent residue.
3. Always thoroughly rinse surfaces with fresh water after cleaning with Awlwash or solvents.
4. Use distilled white vinegar and hot water to remove stubborn salt stains. Washing with Awlwash after use of vinegar is recommended.
5. Use Awlcare (73240) by hand only to remove mild diesel soot stains.
Protecting the surface with Awlcare will help maintain the gloss of Awlgrip HDT. Awlcare is a hand applied, non-abrasive, synthetic polymer. It will remove mild stains, water spots and diesel soot while increasing resistance to attack from acid rain and other pollutants, when applied regularly.

DO NOT:
1. Do not use traditional waxes. Awlgrip has developed Awlcare Protective Polymer Sealer for those who want to enhance their finish and need the additional cleaning power of a hand applied, dry wash product.
2. Do not use abrasives, scratch pads or polishing compounds. Scratching the surface gives dirt a place to cling while wearing out the resin layer. Using abrasives of any kind will reduce the overall life of the finish and voids the Awlgrip Limited Warranty.
3. Do not allow contact between the Awlgrip HDT and teak cleaners.
4. Do not allow metal polishes to dry on the surface of Awlgrip HDT. Metal polishes may discolor and stain the painted surface.
5. Do not use strong solvents (eg. lacquer thinner, M.E.K., acetone) to clean Awlgrip HDT.
6. Do not allow wet equipment (e.g. seat cushions, coils of line, sails, sail covers, coolers) to trap and hold moisture against Awlgrip HDT.
7. Do not ‘shrink wrap’ or tightly bind Awlgrip HDT surfaces with plastic wrappings. The cover system, whether synthetic or natural fiber, should be ventilated to allow the coating system to ‘breathe’.

How to Apply Awlgrip HDT

Surface Preparation

The surface preparation advice provided, and equipment suggestions, can be used as a guide. Preparation techniques and results will vary according to individual conditions, equipment choice/condition and other factors. Testing on a non-critical area should be carried out prior to full-scale preparation.
Awlgrip HDT should be applied over Awlgrip 545 Epoxy Primer or previous Awlgrip Topcoat/Awlgrip HDT/Awlcraft 2000.
Over Awlgrip Topcoat/Awlgrip HDT/Awlcraft 2000 topcoat sand topcoat with P400 to remove the gloss and clean with surface cleaner T0170 (US) or T0340 (EU) using the two cloth wipe down method.
Avoid painting in direct sunlight. Do not apply paint materials to surfaces less than 5°F (3°C) above dew point, or to surfaces warmer than 105°F (41°C).
Ambient temperature should be minimum 55°F (13°C) and maximum 105°F (41°C). At standard conditions (77˚F (25˚C), 50% R.H.), avoid applying topcoats when the temperature could drop below the dew point within 6–8 hours after the application.

Mixing & Reduction of Awlgrip HDT
Mixing and reduction requirements will vary according to individual conditions, climate, equipment choice/condition and other factors. Mixing and application of a small sample before full-scale application is recommended.
Mix Ratio (by volume) – 1:1:0.25 (Base : Curing Solution : Activator)  (eg 1 Gallon:1 Gallon:1 Quart or 100:100:25ml).
Induction time = 15 minutes.
Mix to a smooth, homogenous mixture
Awlgrip HDT is designed for spray application only. Correct choice of activator must be made according to the application conditions and project size.
General guideline:
15-23ºC OA0020
20-30 ºC OA0015 (US only)
>30ºC OA0010

1. Mix all 3 components of Awlgrip HDT thoroughly, especially the base. Mix by volume to a homogeneous mixture:

For example, mix 100ml OC series, 100ml OC0010 & 25ml OA0020 (or 32 ounces OC series, 32 ounces OC0010 & 8 ounces OA0020). Keeo in mind that adding more activator into the mix may compromise pot life and could affect the flow of the product.
2. Once the product is mixed, ensure at least 15 minutes induction time. If the induction time is not followed, the product may down gloss / haze once cured.
3. Initial spray viscosity should be 14-20 seconds (DIN4 or equivalent) and varies with the application conditions. The best choice of activator will depend on application conditions and boat size.

As a general guideline (see below):

Application & Conditions for Awlgrip HDT

4. Application equipment: Gravity or pressure feed, air atomized spray or electrostatic spray
5. The primed surface must be clean and dry.
6. Apply 2 coats of Awlgrip HDT, this should be sufficient to achieve the correct DFT of 50-75 microns (3mils) DFT. However, some colours may require additional coats to achieve full hide / opacity and colour development. Application of the first coat should be approximately 75 microns (3 mils) WFT and application of the second coat should be approximately 100 microns (3.9mils) WFT. The surface may not become completely ‘tack free’ in between coats, however it is recommended to wait at least 30 minutes between coats (this time will vary depending on activator selection, temperature and humidity and air flow)
7. Awlgrip HDT has a relatively short pot life compared to Awlgrip topcoat, so for optimal performance prepare a fresh mix for each application. Don’t mix the new & old paint together as this may compromise the final finish.
8. The Awlgrip HDT activators can be blended together to suit not only environmental conditions but also project complexity. For a good starting point use a 50/50 OA0010/ OA0020 blend (or OA0015) then adjust to your preference.
8.1 To achieve a longer pot life or longer wet edge, the blend of A0010 and A0020 should be adjusted to include more A0010.
8.2 Similarly, for small areas or where drying time needs to be reduced, the proportion of A0020 should be increased.

9. Even if temperature has a greater effect on the cure and the potlife, humidity to some extend can also have an influence on the flow and performance of the product.
9.1 In cooler humid conditions it is suggested to either use only OA0020 or a blend of OA0020 and OA0010 with a higher proportion of OA0020 to OA0010. Example 75/25 OA0020/OA0010.
9.2 In hot humid conditions it may be necessary to increase the proportion of OA0010 and decrease the proportion of OA0020. Example, 75/25 OA0010/OA0020. Even in hot humid conditions, it is not recommended to solely use OA0010 due to the risk of moisture causing down glossing.
10. When first using Awlgrip HDT, it can apply differently to other topcoats currently in use. To help with this, up to 12.5% of T0002, T0001, T0003, T0005 or T0031 can be added to help with wetting out of the surface. Using extra reducer may require an additional coat to be applied and will mean the product is no longer ‘VOC compliant’. Once applicators are used to the behaviour of HDT on application, a similar quality of finish can be achieved without the addition of extra reducer. It is recommended to mix separately the Activator (OA0010, OA0015, OA0020) in equal amounts to the chosen reducer. This mix can then be added to the 1:1 base & curing solution at 25%. This mix will contain 12.5% Activator (as recommended) with 12.5% reducer; from a painters perspective this gives a 1:1:0.5 overall mix ratio.
11. Thanks to the activator/ reducer choice based on temperature, Awlgrip HDT has been proven to be a very adaptable product. The chart on page 1 is to be used as a guide only. In low temperatures, the standard paint mix with fast activator works very well. On larger surfaces, the addition of standard solvents helps to carry a wet edge if the applicator is struggling. For hot weather, OA0015 activator works well. If the applicator is struggling with wet edge, the addition of solvents helps. It is recommended when blending the activators to use the two extremes OA0010 Slow) and OA0020 (Fast) this allows more control. In low temperatures, we recommend T0001 or T0002; in medium temperatures T0003 and in hot temperatures T0005. In hot to very hot weather T0031. Start with the addition of 5% solvent. It is recommended for larger applications that a pre-shoot on panels is to be carried out, “to enable applicator to choose” the best optimization for the size project and conditions.
DRYING TIMES & REPAIRS for Awlgrip HDT
12. If environmental conditions require that the product dries faster (cooler more humid conditions), add slightly more OA0020 into the mix. Keep in mind this may compromise pot life and could affect the flow of the product. Also, in that case the product is no longer VOC compliant.
13. Awlgrip HDT has a new repair process compared to the standard Awlgrip repair. See the Repair & maintenance brochure for further info.
14. Awlgrip HDT can be harder to polish therefore we only recommend this for repairs and to remove localised defects. If working in an environment where you know you’re going to polish the whole boat, Awlcraft 2000 is the best choice.
15. Polishing Awlgrip HDT : Always test a small, low visibility area (or a sample panel) first before proceeding. Certain color shades may not be suitable for polishing. The tone of the color may be affected during sanding or aggressive polishing. Multi-stage sanding & polishing systems can also be used. You should contact your local supplier for further information.

Awlgrip HDT Application continued

Application equipment and parameters are given as a guide. Actual equipment choices will vary according to application conditions, equipment condition and other factors. Testing on a non-critical area should be carried out prior to full-scale application. Contact your local technical service representative for further advice if necessary.
To ensure optimal adhesion between coats Awlgrip HDT should be applied according to the overcoating intervals as described in the Recoatability & Drying Times section.
Apply a full coat of Awlgrip HDT to the surface. Allow tack coat to “flash off” 30-45 minutes depending on application conditions. Apply a slightly heavy second coat. A third coat can be applied to reach DFT if needed.                         

Application MethodsFluid TipFluid PressureAir Pressure
Conventional Spray Gravity,
Electrostatic
1.20 – 1.40 mm
47 – 55 thou
 –180 – 280 cc/min3 – 5 bar
29 – 44 psi

Recoatability & Drying Times
The data given for recoatability is not exhaustive. Actual recoatability can vary according to individual conditions, climate and surroundings. If unsure, consult your local technical service representative before proceeding.

Drying15ºC (59ºF)25ºC (77ºF)35ºC (95ºF)
Hard Dry46 hours22 hours6.5 hours
Touch Dry6 hours4.5 hours1.5 hours
Pot Life3 hours2/5 hours2 hours

Values in the table are for a 50:50 mix by volume of Awlgrip HDT Fast Activator and Awlgrip HDT Slow Activator. If using only Awlgrip HDT Fast Activator or Awlgrip HDT Slow Activator at a different ratio drying time and pot life will vary.

Awlgrip HDT has a shorter pot life than a standard polyurethane topcoat.

Overcoated by15ºC (59ºF)15ºC (59ºF)25ºC (77ºF)25ºC (77ºF)35ºC (95ºF)35ºC (95ºF)
MinMaxMinMaxMinMax
Awlgrip HDT2 hours24 hours2 hours24 hours2 hours24 hours

Recoatability: Spray application consists of 2 to 3 coats applied over 2-4 hours. Exact time will vary with temperature, project size and film thickness applied. Awlgrip HDT cannot be overcoated with itself after 24h. Please contact your local representative for more information
Some Important Points
Awlgrip HDT is compatible with Awlgrip repair product. Please refer to the Awlgrip website or to the Awlgrip Application Guide for further information.

Awlgrip Product Data Sheet

TIPS & TRICKS FOR AWLGRIP HDT APPLICATION

Sea Hawk Paint Reviews

Customer Reviews of Sea Hawk Paints

Sea Hawk Paints is an American manufacturer of premium performance antifouling paints and coatings, dedicated to bringing the highest quality products to boat enthusiasts.

Bottom Paint Store is a proud Sea Hawk paints distributor, and we have received a lot of Verified Reviews from actual customers using Sea Hawk marine paints. Although the reviews are listed on each of our product pages, we thought it would be helpful to share a collection of some of the reviews on one page.

Sea Hawk Aluma Hawk Paint Reviews

Seahawk aluminum boat paint is perfect. No primer required. I’ve used this paint for two years with excellent results. – William E.

Great product. – Kody L.


Very impress with the paint covering, 1 1/2 half gallon for my 20 feet pontoon.- Cristian V.

Adhesion seems better than most paints even when not fully cured. Liking what I see so far. – Mark L.

Great paint and easy to use. Took a little bit longer to dry than expected, but that was mostly a humidity issue on my end. Looks great and it will buy it again if I need some more for anything.- Eddie C.

Haven’t used it yet but I ordered it because of its good reviews on YouTube.- Jesse H.
Great product. Bruce D.

Excellent product for my Jon Boat- Dennis E.

Looks great! Sam B.

I learned several things about this paint; 1. Make sure you apply it soon after you receive it. If it’s going to sit for a couple of weeks, you will need to stir it very well to break up chunks in the bottom of the can. 2. Two quarts are not enough to paint the bottom hull of a 14-foot aluminum Jon boat. It will take at least 3 quarts for 1 coat. 3. Wear gloves. If you get this on your hands, it will take longer to get off than regular paints. 4. It takes a week to cure. It says so on the can and I can see that. Even though the paint appears dry after a few hours, it’s still tacky. So, you will need to have some patience. Seriously, this is not like painting other objects like wood. Read all the directions and act accordingly. Keep in mind that this is for boats that will routinely be out of the water. It has no anti-fouling properties, and that’s OK if you’re not going to leave it in the water. Personally, I live in a desert area of Arizona, so not an issue for me. – Kevin P.


The best product for aluminum boats.- Robert D.

Purchased an older small used pontoon for our no motor lake. The bottom crud was like cement and I eventually used a sand blaster wand attachment to my power washer to clean of this crud (unreal). Chose Aluma Hawk paint for the sand blasted pontoons and it worked great. This paint needs to be used in a WELL ventilated area!!! I was outdoors painting with a roller on a calm morning and decided to wait till the wind picked up to finish. Tough durable and easy to use. The green makes it look like its from the military surplus! Love it. Certainly the fish will be confused. LOL.- Keith B.

Smooth application.- Brad H.

Very good paint. – Chris T.

I used a roller went on smooth. – Roger C.

The paint match was pretty close to what the previous owner said he put it on the boat… I only did the transom and some touch up on the sides. Good quality paint for an aluminum boat.- Rich H.


I purchased the Aluma Hawk 7031 lite gray – 1 gallon, which gave me 2 coats on the bottom & 1 coat inside. The factory didn’t recommend spraying the paint, so i rolled it & brushed it on. The paint dries quickly, so you have to work fast to maintain a wet edge. I did small sections at a time to make sure I got even coverage. – Russell S.


Haven’t used it yet. – Joe S.


Love this paint. I painted my jon boat years ago with this stuff. It holds up, doesn’t fall off or fade. Added pods to my boat and had to get another quart. The color matched really well.- Steve K.


Great paint, just needs to be shaken before shipping.- Greg M.


This paint if fantastic! It adhered to my boat very well and it only needed one coat to cover evenly. – Arnold B.


Met all my expectations for painting exterior of houseboat. I strongly recommend!- Marsha M.


Best I ever used on alum!!!!!!!!!!!!!!!!!!!! – Herman B.


The Value is in the Lasting Performance so I shall see. Putting it on, one NEEDS to KNOW what they are dealing with BEFOREHAND as far as Application, in knowing this project should come out perfect. Price of this product should be determined by it’s worthiness over time. Clean Up be SURE to use right Measures and Tools.- Jerry H.
Works good, dries well, one quart did a first and second coat on our jonboat.- Lindsey M.


Anticipating the paint will be great- Paul M.


Great products. – D. Mendez


Great product. Best bottom paint I have used yet. Good ventilation required. -Jon B.
Awesome- Todd Z.


Paint was as advertised. Very pleased with product. Would highly recommend.- Jerry R.
Easy to apply and dried quick, didn’t even really need a second coat but put one on anyway. -Sarah L.


Applying the product now and appears to be coating and covering as described. The painting (job) isn’t complete yet so I can’t comment on life longevity or wearing but satisfied so far. – Jason K.


This appears to be a good quality product but is not real user friendly for DIY due to the fumes and the fact that MEK is needed for clean up. – Douglas L.


So far pretty good, it’s been about six months now since application. I recommend reading the directions very well, it tells you exactly how to thin and apply with the exception of what type of roller to use, I used a 1/4 nap roller but seemed to go on pretty thick. I had to thin it a bit more than what it said in order make it a bit easier, it recommends rolling as best method but I believe spraying would be better. A 16 foot long 5 foot wide vhull took about a gallon and a half to paint but I believe it is because it was going on pretty thick, to spray it says can be thinned 50% but for roller or brush only 10% which seemed to thick and not much coverage, either way you have to move pretty quick because it will flash pretty fast. It dried to touch pretty quick but due to the thickness from rolling it seemed to take forever to fully dry and or cure during which time it was still pretty soft and easily scratched off. After being left to sit and fully cure/harden I will say the stuff seems pretty hard and tough as nails. I used the sand color and if an when the time comes to paint the boat again I would use it again only spray it . I initially bought a gallon and a quart but soon realized it was going to be enough so I bought another gallon and still have about half of it left, I applied two coats to the entire boat both inside and out.- David P.


Great- Todd Z.


The paint went on as expected will have to wait and see how it holds up.- Howard B.

Sea Hawk Cukote Paint Reviews

I thought the value was great even though I haven’t used it yet due to my marina being backed up with haul outs so Ill probably get hauled out after hurricane season is over, plus it will be cooler then as well.- Michael W.

The quart I bought was surprisingly heavy but instructions were clear and it was easy to apply. Certainly recommend gloves and a disposable brush. – Peter S.

Boat had never been painted and I prepped and applied 2 coats below the waterline and 3 coats on the waterline . Held up for 2 years in coastal NC waters . Very little growth to remove . Pressure washer blew most of it off . I would call Sea Hawk Cukote a very good product. – D. Bordeaux

After more than 40 years experimenting with different bottom paints on many boats, I’d have to say Sea Hawk paints are the best (least fouling, longest-lasting) ablative paints I have found. – Stephen P.

Quick delivery good pricing. – Robert S.

I kept my sailboat on the Chesapeake in an area with warm brackish water very conducive to barnacle growth. Cukote worked better. – Robert P.

Excellent product. Alfred L.

IMO, this is the best bottom paint. Only requires one coat. – Gerald D.

It is on our boat now and we needed some touch up. – Carol S.

Great product to use on boat bottoms. – Jeffrey R.

Sea Hawk Tuff Stuff Reviews

Cleaned the surface, highly recommend a fan or 2 when using. Does have strong odor like any reducer or thinner. – Peter P.

A high quality epoxy paint. I will order it again. – Edward O.

Applied well, pretty happy so far! – Sam B.

Love it. Easy to work with and tough when cured ! Easy to wet sand also in prep for color coats ! – James W.

Very easy to use, just follow the directions. I have not put the boat in the water yet, but I don’t forsee any problems. – Sharon T.

The Sea Hawk Tuff Stuff was very easy to work with and the 1:1 ratio made mixing easy and error free. It went on easily and dried quickly so that I could apply 2 coats plus bottom paint In one day on a 46ft. Motor Yacht. The Sea Hawk Tropicoat was also easy to go on ( I recommend thinning as the paint is extremely heavy with copper). It dries quickly and have a hard service in 15 minutes. I am very happy with both products. – George M.

Great primer, the name says it all. – Eric H.

Very good product. – Nicholas C.

How Can Gelcoat Be Used to Repair Fiberglass Surfaces?

brushable gelcoat

Gelcoat is popular as a surface coating in the fabrication and repair of fiberglass-based products and can also be used to patch existing gel coat, fiberglass repairs, and new construction and repair projects. Gelcoat is extremely durable and provides a high-quality finish to visible surfaces making it a popular solution for damages to fiberglass surfaces such as covering up blemishes, patching small holes, filling cracks, and renewing surface shine. Gelcoat is often referred to as a one-stop solution for almost all types of damages on fiberglass surfaces such as, boats, jet skis, wave runners, swimming pools, hot tubs, showers and more.

Gelcoat for Swimming Pools

If you have a fiberglass pool then its surface is made of gelcoat, a liquid-colored resin that is applied to the pool shell. Gelcoat is the considered one of the most durable pool surfaces, typically lasting several decades, depending on maintenance, wear and tear, and the quality of the surface. Concrete pools need to be refinished about every ten years or so.

One of the more common areas of a fiberglass pool that needs to be refinished over time are the pool steps which can fade after exposure to pool chemicals, weather and UV rays. For more information please refer to our How to Gelcoat your Fiberglass Pool Steps article.

Gelcoat for Shower Stalls, Bathtubs, and Hot tubs

Cracks, holes, chips, and stains in showers and tubs made from fiberglass can be repaired with gelcoat. A common rule of thumb is if the hole is smaller than 1/2 inch, you should be able to make the repairs yourself; if it is a larger hole, then it may require the replacement of the surface or unit.

Fixing the damaged area requires applying two-part epoxy that hardens to the strength of the surrounding surface.

Gelcoat for a Fiberglass Deck

Applying gelcoat to a fiberglass deck is a great way to protect the surface from UV damage and environmental elements. Gelcoat is a clear or tinted resin that is applied to the surface of the deck, creating a protective barrier. The gelcoat will need to be reapplied every few years in order to maintain its effectiveness. When applying gelcoat, it is important to use a natural bristle brush in order to avoid damaging the fibers of the deck. In addition, gelcoat should be applied in thin coats in order to avoid runs and sags. With proper application, gelcoat can provide many years of protection for your fiberglass deck.

One of the most common ways to refinish a fiberglass deck is with a two-part polyurethane, as the results will provide a finish that will look as good as and should last at as long as the original gelcoat.

Re-gelcoating a Boat Fiberglass Hull

Regularly waxed gelcoat can last up to 15 years, depending on how well you take care of your boats hull and exposure to UV rays. If your hull is showing signs of damage such as cracking or is no longer retaining its gloss, and has chalky white powder on the surface, then it is time to re-gelcoat your hull. Dewaxer is perfect for dewaxing the hull and effectively cleaning up paint supplies.

Repairing a Fiberglass Boat

Repairing a fiberglass boat is not as difficult as it may seem. In fact, with the right materials and some basic knowledge, you can easily repair gelcoat cracks and holes. The first step is to clean the area around the crack or hole. This will help to ensure that the repair area is free of debris and dirt. Next, use a gelcoat patch kit to apply a thin layer of gelcoat to the damaged area. Once the gelcoat has cured, sand it down until it is flush with the surrounding area. Finally, apply a fresh coat of paint to protect the gelcoat from UV rays and weathering. With some patience and attention to detail, you can easily repair gelcoat cracks and holes yourself.

Be Prepared for your Gelcoat Project

Using gelcoat can be an excellent solution for repairing and renewing fiberglass-based surfaces. Gelcoat is sometimes referred to as marine paint for fiberglass, however it is not a paint, so if you are unfamiliar with applying gelcoat, please see our numerous how to articles as it can be difficult to apply and achieve optimal results for first time users. You can also contact Bottom Paint Store’s technical team from 8:30-5:00pm EST Monday through Friday.

The Different Types of Pettit Paint

Pettit Marine Paint, was established back in 1923 and is a manufacturer of a variety of boat paint including marine coatings, antifouling boat bottom paint, varnish, and epoxies.

Hard Modified Epoxies – The active ingredient leaches out while the paint film stays mostly intact. Leaching Coppers lose performance as time goes by and must be repainted after dry storage.

Pettit Easypoxy is an advanced single-stage topside polyurethane and deck enamel. It has a superior high gloss finish and flows well when brush applied. Easypoxy’s innovative ultraviolet filters improve gloss retention and enhance polyurethane’s durability.

Captain’s Satin Sheen Varnish V-975 is widely esteemed for its reliability, multi-purpose application, fast-drying capability, and superior durability.

Ablatives – (Ultima and Hydrocoat Technology) Ablative polymers paints wear away with use exposing new biocides, both the biocides and the paint film disappear over time. Ablative Polymers can be used multi‐season and maintain a more steady performance throughout their useful life.

Pettit Black Widow Racing Antifouling is the slickest, fastest, ultra-smooth, burnishable racing finish available. Its powerful dual biocides provide multi-season protection in all waters. Black Widow is easily applied by roller, brush, or spray and is easily burnishable to a metallic “gun-metal” shine.

Hybrid – (Vivid Technology) Hybrid antifoulings offering hard paint that does not build up. Hybrid’s work by leaching out the biocides just as a Traditional Leaching Copper does, but once the biocides are gone, the paint film will break down exposing a new layer of biocide.

Trinidad HD, Multi-Season Hard Antifouling Paint provides excellent, long-lasting protection, even under the toughest antifouling conditions. Trinidad HD provides dependable in-water antifouling protection while meeting the 330 gram per liter VOC regulations.

Copper Free – Econea is a non-metal biocide that is extremely effective against hard-shelled fouling organisms including barnacles, hydroids, mussels, oysters, and tube worms.

Odyssey HD multi-season antifouling combines controlled polishing ablative technology with a high copper content to provide a paint film strong enough to handle the tough marine environment from coast to coast. Odyssey HD is compatible over most finishes, 50 state V.O.C. compliant, and will not build up over time leaving running surfaces smooth and clean.

White Copper -(Cuprous Thiocyanate)- requires 50% less copper content than the heavy, dark copper used in conventional antifouling paints. They are the only copper-based paints that are compatible with aluminum.

Low-Density Copper – replaces the core of traditional Cuprous Oxide with environmentally friendly materials found naturally in the ocean.

Irgarol – is used in many dual biocide products, Irgarol is an algicide designed for use in antifouling paints to prevent soft growth such as algae and grasses.

Water-Based (Hydrocoat Technology)- This formula uses water to replace the harsh solvents found in conventional antifouling paints. The product has an extremely low VOC content.

Clean Core Technology – An enhanced paint film that can reduce the amount of heavy metals released into our waters by up to 90%. These new additives have been specially formulated to provide a more “finetuned” and consistent release of the biocides from the paint film. This results in a more effective bottom paint that requires lower biocide levels to deliver full antifouling protection.

Pettit SR vs Pettit PRO

Pettit Ultima® SR-40 features an enhanced formula that utilizes an increased biocide load combined with PTFE to offer an outstanding multi-season control in all types of fouling. SR-40 employs a unique controlled erosion technology to minimize coating build-up and keep underwater surfaces smooth. Its ablative surface wears away with use providing a continuous supply of fresh biocides while eliminating the need for sanding. Ultima® SR- 40 employs a Slime Release technology combining super slick PTFE with a higher copper load for added performance and reduced friction. It can be hauled and re-launched without repainting. Ultima SR-40 is available in red and blue colors and is an excellent choice for powerboats or sailboats with fiberglass, wood, or steel hulls. Formerly sold as Ultima® SR and Horizons® Pro, this formula has a proven track record as one of America’s premium ablative bottom paints. Ultima® SR-40 is an excellent choice for power or sailboats with fiberglass, wood, or steel hulls.

Pettit Trinidad Pro is packaged exclusively for professional applicators through the Pro Coatings line. Due to its dual biocides, with a high 60% copper load, Trinidad Pro offers unprecedented protection. It is a long-lasting, strong antifouling and features a high copper load and slime resistance that provides unprecedented resistance to all fouling. It is a hard protective coating that has excellent adhesion and withstands the toughest abuse. Trinidad Pro is available in black and blue colors and can provide years of dependable service, even if left in the water, and is backed up by the HD (Hull Defense 18 Month Limited Warranty).

If you need assistance selecting the best boat paint for your paint project, contact the technical experts at Bottom Paint Store Monday through Friday 8:30-5:00 pm EST 888.505.2313.

The Different Types of Boat Paint

In this article, we will briefly describe some of the different types of boat paint that can be used to repair, restore, protect, and make your boat looks its best.

Topside boat paint is a type of paint you apply above the waterline of a boat. This can include the sides of the hull, deck, as well as interior. Marine topside paints usually consist of one-part polyurethane, two-part polyurethane, and alkyd marine enamel. There are also buffable, two-part acrylic urethanes. Due to the sun’s rays, your boat is vulnerable to UV damage so coating your upper hull and deck with good topside paint can go a long way to protecting your boat.

Blue Water Marine Topside Paints are superior in quality, higher in value and typically, priced better than store brands


Aluminum boat paint can be used for many purposes including to camouflage, decorate, refurbish, or restore and touch up aluminum boat surfaces. Paint that is safe for aluminum and can be applied without a primer and can be used below or above the waterline. If you don’t take care of your aluminum boat, it will eventually start to show its age. One way to keep your aluminum boat looking new is to touch up the paint when it starts to fade or chip. Touching up the paint on your aluminum boat is a relatively simple process.

Aluma Hawk Paint
Aluma Hawk is a fast drying, high-solids, corrosion-inhibiting coating designed for use on aluminum with no need for a primer.
Duralux Aluminum Boat Green
Duralux Aluminum Boat Green


Fiberglass coatings usually consist of gelcoat, gelcoat putties, resins, restoration solutions, repair kits, and tools/materials. Gel coats are often used to touch up or repair a boat’s finish. They have a much shorter shelf life and can be a lot more difficult to apply than paint so the manufacturer’s instructions must be carefully followed to ensure a successful result.

Gelcoat can be used to patch existing gel coat, fiberglass repairs, and new construction and projects.


Wood boat paint typically includes traditional types of oil-based finishes, as two-part paints tend to be less flexible. Because wood can flex and swell, especially along seams, expensive finishes will not last any longer than traditional stain or paint. Teak can be used to prevent fading on a boat’s wood finish. If left untreated, it will often fade which leads to the need to clean or treat the wood so it is not susceptible to rot, mildew, and discoloration.

Teak wood cleaner
Just Teak is a simple solution to clean, brighten & protect your teak.


Bottom boat paint is antifouling paint or coating designed to diminish weeds, barnacles, and other aquatic organisms that can attach below the waterline of a boat and cause damage. Bottom paint includes ablative bottom paint, hard boat bottom paint, aluminum safe bottom paint, primers for bottom paint, and boat bottom paint remover.

Biocop bottom paint uses the newest biocide technology which is safe for the environment.

If you need assistance selecting the right marine boat paint for your next project see Bottom Paint Store’s how-to articles or call our technical support department Monday-Friday from 8:30-5:00 pm EST 888-505-2313.

Using a Signal Coat Indicator for Repainting Ablative Antifouling Paint

Antifouling paint is a type of underwater hull paint, also known as bottom paint. These specialized coatings are designed for the exterior of the hull of a ship or boat and combat the growth, as wells as, the detachment of underwater organisms, such as seaweed, algae, and barnacles. These aquatic life forms bind to the hull and impact a vessel’s performance and longevity.

Anti-fouling paints are often applied as one component of a multi-layering process which can have other benefits in addition to their antifouling properties, such as acting as a barrier against corrosion on metal hulls that will degrade and weaken the metal, or improving the flow of water past the hull of a boat or yacht.

Boaters recognized early on it is important to keep the bottom of their craft free of barnacles due to loss of speed and performance. The key is knowing when to pull your boat out of the water for a new bottom paint application. Ablative paints are typically reapplied every 1–3 years. One way to ensure you reapply your ablative antifouling paint when it’s needed is by adding a signal coat or flag coat.

To apply a signal/flag coat, when you are getting multiple coats of ablative bottom paint applied to your hull, make the first coat a different color. For example, if the bottom is going to be painted blue, make the first coat red. When the blue paint wears off and you see the red flag coat, it is time to repaint.

ablative bottom paint
Aquaguard is an excellent antifouling bottom paint

If you need further assistance with your boat painting project feel free to contact our technical team Monday-Friday 8:30-5:00 pm EST.

Antifouling Paint for Inflatable Boats

Be sure to apply a water-based ablative antifouling paint to your inflatable boat

Inflatable boats have become very popular due to their flexibility and variety of uses. If your inflatable-bottom dinghy stays in the water for long periods of time and you have decided to apply antifouling paint you have a few options. You’ll want to apply a water-based ablative antifouling such as Monterey by Sea Hawk, one quart is enough for two coats on an 8-10′ boat. Avoid copper-based paint on aluminum. Before application clean the area with a maroon Scotchbrite pad for good adhesion. These paints tend to be flexible and adhere well to PVC and Hypalon but since they are ablative they can easily rub off so be careful when storing your dinghy on deck or deflating it for longer storage to protect surrounding areas from paint.

Monterey Bottom Paint

If you need further assistance with your inflatable boat paint project do not hesitate to contact our technical team Monday-Friday 8:30-5:00 pm EST.

Using Webbing Solution

Webbing Solution is a clear liquid added to gelcoat to obtain spatter or cobweb effects. It is mixed with a gelcoat of one color and sprayed onto a contrasting colored surface.

Decorative effects produced by the webbing mixture will vary, and relate directly to techniques or gun adjustments. A fine hairline spider web pattern results from plenty of air and scanty material flow. Coarse and splotchy patterns are created by fuller material flow and decreased air volume. While our webbing solution is only tested with gelcoat, customers do use with paint achieving similar results.

The manufacturer suggests on the initial coat you add the wax and while gelcoat is still tacky before it comes to a full air cure, you apply the contrast color of webbing (which should have the wax added too).

If you are applying webbing over a fully cured gelcoat, sand with 150 grit, clean with acetone, and then apply the webbing.

Mix 2 parts gelcoat to 1 part webbing.
Mix proper amount MEK-P for the amount of gelcoat.
Shoot at 10 to 12 PSI.

Add to colored gelcoat to obtain desired webbing effect. Test in an inconspicuous area to determine satisfactory results

Testing for Compatibility of Topside Paint with Awlgrip Topcoat

SURFACE PREPARATION
COATINGS COMPATIBILITY & ADHESION
TESTS (ABOVE WATER ONLY)


Test One: Cross Hatch Adhesion (See diagram above)

  1. Select test area(s) on the surface to be painted. Thoroughly clean,
    de-wax and degrease this area.
  2. With a sharp blade, cut 6 lines vertically and 6 lines horizontally to give
    a box of 25 squares. The cuts must be deep enough to reach the
    substrate. On thick fairing systems this test may have to be done to
    several different layers.
  3. Apply 3M #610, #895 or #898 3M Scotch Brand Filament Tape (or
    similar type of packaging tape) over the scribed area, making certain
    that the tape is tightly adhered to the test surface. Do not use
    masking tape.
  4. With an abrupt yank, pull the tape back parallel to the surface. Pulling
    the tape straight up will give no test at all.
  5. Examine the test surface. If any square of old coating in the scribed
    area is removed, the adhesion has failed. All the failed layers must
    be removed.

Test Two: Solvent Resistance

  1. Saturate a cotton ball or small wad of cloth with one of the
    Awlgrip Topcoat or Primer Reducers (T0003 or T0006).
  2. Tape the reducer-saturated ball to the scribed area surface for
    30 minutes.
  3. After 30 minutes remove the cotton ball. If the reducer has dissolved
    or severely softened the old coating, the coating is incompatible and
    must be removed. If the scribed area has remained intact, allow a
    15 minute recovery period and repeat all steps in Test One again.
  4. If any square areas are removed, all the failed layers must be
    removed.

Test Three: Coating Compatibility
If the old coating is still intact after Tests One and Two, perform
Test Three.

  1. Lightly sand a small test area with 220 grit paper. Clean the sanded
    areas thoroughly with Awlgrip Wipe-Down Solvent (NA/AP:
    Awlprep T0008 ; EU: Surface Cleaner T0340) and using clean cloths.
  2. Paint a small patch of the surface with Awlgrip Topcoat. Do not use
    masking tape on the edges of the test application as the paint edges
    created by the tape will ‘print through’ and be visible in the finish.

How to repair a hole on the side of your boat

Repairing a hole on the side of your boat is possible by following this guide and using epoxy resins for wooden boats.

Begin by inspecting the hole for any cracks that extend away from the
hole and clearly mark the entire area that needs to be patched. You want to be sure to extend your mark out beyond the damaged area by a few inches.

Hawk Epoxy f2 Structural Adhesive Filler

Cut the marked area with a hand saw making sure the hole is beveled in order to allow layers of fiberglass to fill the hole. Measure the thickness of the hull substrate and multiply it by 10. This is the distance from the hole edges that the bevel needs to accommodate.

Use a power sander with a 50 grit sanding disc to bevel from the whole edge out to your mark. Fiberglass layers are going to be placed on the outside of the hull. Use a flat backing on the inside of the hole to keep the wet fiberglass cloth from caving into the hole.

Next cut six pieces of fiberglass bi-axle cloth with the first piece being the size and shape of the outer edge of the bevel. The final sixth piece being the size of the hole itself. Remember it is important to use fiberglass bi-axle cloth for hole repairs.

Wet out the beveled area of the hole with a mixed epoxy. Lay the cut fiberglass bi-axle cloth on a piece of plastic going from large to small pieces. Make sure to wet each piece as you place them on top of the next piece. When wetted out properly the bi-axle cloth will become transparent. Put the wet out pile of fiberglass bi-axle cloth into a piece of peel ply, with the small pieces down. Next, mix the Hawk epoxy f2 filler and hawk epoxy resin catalyst until you reach a soft butter consistency.  

Hawk Epoxy Resin Catalyst

Brush this mixture onto the beveled area of the hull and be sure to center your filler. Wipe off any extra leftover epoxy from the hull, squeegeeing out the air pockets and wiping with a clean cloth that has been dampened with solvent. This will be a lot easier than sanding it off later. Allow the patch to cure for the recommended cure time (overnight is typically sufficient) per the instructions on the hawk epoxy resin can label.

Once it has cured, remove the repair area backing on the inside of the hull. The repair area on the inside of the hull can be left untreated if it will not be exposed to sunlight. Remove blush with soap and water. Next sand off any rough areas on the outside of the hull with 80 grit sandpaper and then sand with 100 grit sandpaper the entire repair area so it is completely smooth (this may require a disc sander if it’s too difficult to sand by hand). You can dust off the area a clean cloth, air gun or brush it off with a clean brush.

F5 Light Density Fairing Filler

Prepare a batch of Hawk epoxy resin and catalyst. Apply coats to the repair area with wet epoxy, with the remainder of the Hawk epoxy resin mixed in the Hawk epoxy f5. Lightly mix filler until density is a medium thickness
with no sag consistency.

Next, spread the mixture onto the repair area and squeegee the area until as smooth as possible. Allow the area to cure until you can push the corner of the squeegee into the surface and only a slight indentation remains. Repeat the process with Hawk epoxy mixed resin and f5 light density filler, adding another coat of this mixture onto the repair area. Let this cure for 10 to 12 hours.

Remove the blush with soap and water and sand the repair area with a smooth 80 grit sandpaper.

To add color, mix another small batch of Hawk epoxy and introduce the liquid dispersion as this will seal and fill any low areas. Now that you have a strong and
sturdy hull side you are ready for paint!

What Is Zinc Chromate Used For?

Zinc chromate is used for a wide range of applications. It is an odorless chemical compound primarily used as an industrial paint coating. The compound is a beneficial coating because it is an anti-corrosive and an anti-rust primer. It is primarily used to coat aluminum and iron materials. Developed by the Ford Motor Company during the 1920s, it was historically used on aircraft by the US military during the 1930s and 1940s. It is also widely used as a paint coating for the aerospace and automotive industries, as well as, a coating for boats, due to its ability to destroy organic growth on the surface and to protect aluminum from corrosion.

Zinc chromate is on the hazardous substance list and regulated by OSHA because studies have shown that not only is zinc chromate highly toxic, but it is also a carcinogen. It has been cited by ACGIH, NIOSH, DEP, IARC, HHAG, and EPA.

What is zinc chromate used for

Duralux ZinKromate is a high-quality synthetic primer for use in light to moderate marine exposures. It is lead and chromate free so it is safe to use; however, it offers all of the performance and quality characteristics of zinc chromate without the health and application hazards. It has good chemical and corrosion resistance, dries fast, and allows single finish coat coverage when using a like-colored topcoat. ZinKromate performance primer adheres very well to steel, iron, aluminum, or partially rusted galvanized surfaces.

S-76 Strontium Chromate Tack Coat Primer is for use on properly prepared steel, aluminum, or galvanized steel. S-76 is an anti-corrosive strontium chromate-based primer that is specifically designed for underwater metal surfaces including hulls, running gear, and the lower units of outboards and I/O’s. It provides an excellent barrier to reduce the pitting of the metal from galvanic corrosion.

S-76 Strontium Chromate Tack Coat Primer

Stromate Chromate tack coat primer may be used on bare aluminum in conjunction with Tuff Stuff High Build Epoxy to form a barrier for the application of copper-based antifoulants.

If you have any questions about ZinKromate primer or Stromate Chromate tack coat primer, please call our technical expert team at 888-505-2313 Monday to Friday 8 am-5:00 pm EST.

Gelcoat Putty – Repair Spider Cracks And Fill Gouges!

There are many ways to repair spider cracks in boats, using our Gelcoat Repair Putty is an easy and fast way of doing it!

First, you will need to determine your spider cracks are only that, spider cracks. To do so, you will need to inspect the area for any sign of broken support. If the surface is steady and looks solid, then you have spider cracks.

In order to properly fix any spider cracks, you will have to open the cracks to fill them up correctly. This can be done by using a Dremel. Once the crack is open and it has a good size you can sand and clean the area. For cleaning, you may use acetone or soap and water.

Now, you are ready to use the Gelcoat Putty. Mix in a 1-1/2% ratio of MEK-P Catalyst into the putty and mix it properly. Use a putty knife to fill in the spider cracks. Once dry, sand the surface to a smooth finish.

For filling gauges and cracks, some tips:

This product uses MEKP, just like gelcoat so your working time is 8-18 minutes, depending on temperature. If catalyzed at 1% and it is in perfect conditions (77 F) you have a longer work time. To extend work time cool product down before use.

If filling holes, fill a little high to allow for shrinkage. Once it dries you can easily smooth it out with sandpaper. Recommended thickness at 1/4″.

Tip: You can apply gelcoat to match the color of your boat over the repair, or you can use our pigments to tint the gelcoat putty and complete the repair all at once!

Shipping Questions

How long will it take to receive my order via UPS Ground shipping?  The time to ship can be seen on most product pages and may vary by product. Most orders are placed before 2:00 EST. Monday-Friday is shipped the same day with a few exceptions that will be noted on the product page. Gelcoat/Resin materials along with any specialty colors typically ship in 2-4 business days. After the product leaves the warehouse, standard UPS shipping times apply. The map below shows estimated shipping times for items shipped via UPS Ground from our main warehouse In Florida, to destinations in the US. Please note that your order may ship from a manufacturer, or another warehouse resulting in less or more time stated in the map.

Not all items are stocked in the same warehouses, so you may get multiple tracking numbers if you order several items.

If you need exact delivery dates for your potential order or expedited shipping, please create an account and add all the items to your cart. Then email us or give us a call and we will be able to see the items in your order and determine exact delivery times and any expedited shipping rates if requested.

Do You Ship Outside of the US? No. We only ship to the continental US.

All Other Countries or outside the continental U.S.: Items can be purchased and shipped outside the US through the use of a freight forwarder. Items will be shipped through our designated carriers to the US freight forwarding company of your choice.  After you pre-arrange a freight forwarding company, they will provide the necessary documents for export, charge you for the freight to the final destination, and provide you with a US shipping address. We will ship your order to the US freight forwarder as you indicate on the orders’ shipping address. NOTE: We do not offer customer pickup for international shipments. Our carriers must ship to your designated US freight forwarder.

Do you have overnight shipping? This is not typically offered since the cost is about 3-4 times that of regular ground shipping and most of our items are considered hazardous material and travel via ground only.

Thinning Gelcoat and Using PVA

Gelcoat does not fully cure without first supplementing it with a surfacing agent or wax additive sanding aid. Gelcoat may be thinned for use in a Portable Preval Sprayer with styrene monomer. You can spray it with polyvinyl alcohol (PVA) before gelcoat reaches its gel stage (5-10 min.), or add 1oz per quart of a wax additive sanding aid.

PVA or Partall Film #10 is a release agent that helps with removing parts from a mold or can be used as a surfacing agent when using gelcoat without a wax additive (sanding aid).

PVA is soluble in water making it easy to wash off. Applying can be achieved by spraying or wiping the green liquid on with a sponge. It will foam slightly but dry to a clear, glossy shine. It can take 15-30 minutes depending on temperature.

For spraying gelcoat our FGCI brand does not recommend thinning.

Generally, you should not add more than 10% Styrene by volume. Patch Booster is an additive that will thin out gelcoat and not affect colors. Follow manufacturers instructions as added Mekp may be needed.

Another thinning alternative is the Duratec High Gloss Additive. This is used with gelcoat for many reasons. Mixed at a 50/50 ratio this will produce a high gloss finish and will serve as a thinner for your gelcoat, that is why this is commonly used when spraying gelcoat. In addition, you’ll omit any additional sanding aid. After waiting a full 24 hours you can buff when cured, for a hi-gloss use 600 or higher grit paper and buff with Aqua Buff 2000 compound. Follow the manufacturer’s technical data sheet as an extra hardener may be needed. Some customers use Styrene for thinning but the manufacturer warns it can affect the gelcoat colors although this is the most cost-effective option and doesn’t have the added wax.