Ironside Urethane is a super-duty professional type marine protective
coating that produces unequaled performance properties over a wide
variety of substrates. Ironside Urethane may easily be brushed, rolled
or sprayed. A superior formula that out performs competing marine paints
in heavy duty, industrial, commercial as well as sport and pleasure
craft applications. It is
acceptable for use on fiberglass, aluminum, steel, wood, composite and
synthetic materials. While gel coat and many marine paints quickly chalk
and fade, require regular cleaning, waxing and buffing to maintain
their appearance Ironside Urethane continues to maintain its color,
gloss and shine without yellowing. It provides a bright, smooth "lively"
protective finish for years. When impacted or abraded it will not crack
or spider-web like gel coat. It is acceptable for use on almost
any marine surface or infrastructure and it is long term submersible
making it acceptable for use above and below the waterline. It has been
formulated to withstand the harshest chemicals, spilled fuel and acids
making it a favorite where chemicals and fuel are regularly present. It
will withstand spilled fuel or battery acid for 7 days with little or no
effect! Ironside Urethane self levels well. It has a long pot life
making it easier to use. The cured film has a soft, smooth glossy
appearance with the cured finish being deceptively durable. It is easy
to apply, lasts longer and saves money on scheduled maintenance
providing a high level of corrosion resistance.
All applications should begin with the removal of hardware, ventilators,
bang irons and decorative name plates. After that, the steps to prepare
a boat for paint or a clear coating are only slightly different from
those taken with wood, fiberglass, aluminum or steel. The difference
between an amateur and professional application is often preparation.
The smart painter puts most of his effort into preparing the boat for
painting. The old saying is true that 99% of a good paint job lies in
preparation and 99% of paint failures are due to poor preparation. This
is a statistic you do not want applied to you! Do not cut corners when
preparing your boat for paint!
Previously painted boats: Best results will be achieved when most
or all old paints have been completely removed and primer applied to
all surfaces, however, paint in good condition may be cleaned and
de-waxed with SM-695 Etching Cleaner then sanded with a finish of
180-220 grit sandpaper in preparation for paint. An orbital palm sander
or dual-action rotary sander will be less strenuous than hand sanding.
Sanding will reveal areas that are blistered or flaking requiring
removal. Such areas should be repaired if needed and properly primed.
Hand sand to feather the repair to the level of the rest of the existing
paint for best results. Scrapes, scratches and divots may be filled
with painter's glazing compound prior to painting. Trowel it into the
blemish with a putty knife allowing it to set up before sanding smooth.
All repairs and glazing compounds should be primed and sanded before
proceeding with paint.
Preparation on Fiberglass & Aluminum: Loose scale, peeling or
cracking paint, corrosion, dirt, grime, oil, grease and wax all must be
thoroughly *removed. Always clean thoroughly before making any repairs
or sanding. Wax removal is critical and should be done with SM-695
Etching Cleaner or a commercial wax remover. Where silicone polishes are
present be sure to use a blended solvent polish remover to remove
silicone. A second application of cleaner is helpful. Once cleaned,
abrade all surfaces to promote adhesion. Gouges and scrapes may be
filled with epoxy putty. Build up the epoxy above the surrounding
surface so that it can be sanded smooth. Epoxy filler is hard so power
sanding is advised. A dual-action rotary sander achieves the best
results however a good orbital palm sander is acceptable. Rough sand the
patch with 80 grit then switch to 120 grit sandpaper to achieve the
final contour. Once repairs have been completed sand the entire area to
be refinished with 180-220 grit sandpaper then clean with a pre-paint
cleaner or recommended solvent.
Preparing Raw Wood (Unpainted): Bare wood should be sanded smooth
with 80 grit paper before the application of SM-664D Etching Primer.
Select this primer to fill the grain of the wood and create a smooth
easy to adhere to surface for the paint. It has an unusually high amount
of solid material, sands beautifully and locks our air and moisture.
Recommend allowing primer to dry for 2-4 hours before sanding with 120
grit paper. Often repeated coats are applied to achieve a smooth
finished surface. Repeated primer coats and sanding may be continued
until the grain has been filled and the surface is completely smooth.
Recommend 180 grit sandpaper for use in finish sanding. Fasteners in
wood hulls are always countersunk below the surface of the planks. It is
necessary to fill these countersinks in order to achieve a completely
smooth finish. Surfacing putties are preferred over epoxy or polyester
putties because epoxy putties can be harder to remove should it ever
become necessary to remove a plank for repair. Carvel planked boats
require a seam compound. Traditional seam compounds are never applied
until after the hull has received a primer base coat. Traditional seam
compounds should never be applied to bare wood, however, polysulfide
seam compounds must be applied only to bare wood. Apply polysulfide seam
compounds into the seam prior to applying primer.
Preparing Wood (Previously Painted): Paint in good condition
should be sanded with 120 grit paper to knock off the gloss. Orbital
palm sanders or dual action rotary sanders make *sanding large areas
much easier. Sanding usually reveals paint that has blistered or flaked
requiring scraping the hull and sanding to bare wood. Such areas should
filled, primed and sanded smooth. The inevitable sunken fastener holes,
scratches and dings should be filled with painter's glazing compound -
not to be confused with glazing putty used to keep glass in home
windows. Marine glazing compound is a fine putty intended for repairing
small surface blemishes prior to painting. Apply to the blemish area
with a putty knife, allow it to cure thoroughly then sand surface to a
smooth finish. Deteriorating Paint should be completely removed from the
hull before repairs or
primer is applied. Power sanding is preferred over paint remover. This
process is referred to as "wooding down." Once the old paint has been
removed prepare the hull as if it were new bare wood. Finish sand to 180
- 220 grit.
Preparation on Steel: Proper surface preparation is vital.
Previously painted surfaces must be thoroughly cleaned and free of
residues, oily film, and loose paint chips. All rust, loose scale and
contaminates must be thoroughly removed prior to the application of
primer. Preparation should include wire brushing by hand, mechanical
grinding and or sand blasting of all surfaces. Rust should be treated
with SM-5679 Rust Converting Cleaner. Rust free and galvanized metals
should be treated with SM-695 Etching Cleaner. Once all surfaces have
been carefully prepared, rust, oil, grease and contaminates removed, the
application of recommended primer should be applied without delay to
prevent new corrosion. Surfaces treated with SM-5679 Rust Converting
Cleaner within 24 hours (See Performance Data Sheets and MSDS for
SM-5679 and SM-695 for further information).
Primer: Aluminum, fiberglass, existing epoxy and gel coat are
"hard to paint" surfaces often requiring an etching primer. SM-664D
Etching Primer is recommended for use on all gel coat, epoxy, raw
fiberglass and wooden surfaces. It is a superior government
specification formula (TTP- 664C/D) that is very well liked in this
application. While epoxy primer will work SM-664D Etching Primer
outperforms epoxy primers on hard to paint surfaces. You will find
Etching Primer provides outstanding adhesion, build, sandability and
protection from corrosion on almost any marine substrate. Its use
results in better adhesion of the finish coat than can be obtained by
any other process. It may applied with a brush, roller or sprayed. Using
a roller speeds up the work and provides a higher film thickness than
spraying. Apply a minimum of one evenly applied coat to all areas that
will be painted. Film build is high making sanding surprisingly easy.
Use Etching Primer as filler by simply building it up with a brush,
allowing it to dry then sanding it smooth. When spraying Etching Primer
it will likely need to be thinned with SM-605 Thinner. Do not substitute
with other thinners! Galvanized steel, stainless steel and anodized
surfaces must be treated with a fog coat of SM-117 Prewash Primer. We
recommend using SM-664D, SM-5000 or SM-7390 Primer as an intermediate
primer coat before application.
Finish Coats: Current OSHA and EPA *regulations require that
isocyanate urethane coatings including SM-266 Ironside Urethane only be
sprayed by professionals using supplied-air respirators. Professionally
applied spray coat applications yield superior results, however this
product levels exceptionally well in brush and roll applications. Unless
you are experienced with spray equipment the best way for the do it
yourselfer is to apply it is the "roll and tip" method. Traditionally,
one person rolls a thin coat of paint onto the prepared surface while a
second person follows the roller with a brush. Tipping removes bubbles
created by the roller. When properly thinned and applied in appropriate
temperatures it levels exceptionally well. This product sets up quickly
so speedy application and proper thinning will help prevent brush or
roller drag. Spraying offers the best film thickness control however
rolling is often the best way to achieve the recommended maximum Wet
Film Thickness which is 4 mils. The recommended DFT (Dry Film Thickness)
is 4 mils minimum. Applications applied too thickly may not adhere or
level properly, run, sag take longer to cure or result in unwanted amber
resin color. Always adhere to the manufacturers recommended WFT and DFT
(Dry Film Thickness) for best results.
Practical Coverage: 300 square feet per gallon depending on surface and specific application requirements.
Mixing ratio: 7:1 (by volume) with SM-5729 Part B (Induction
Time: 10 minutes). Ironside Urethane must always be stirred or shaken
thoroughly before use.
Pot life: 4-6 hours.
Thin to a viscosity of 22-25", Zahn #2 with SM-605 Thinner. Adjust the
amount of thinner as needed to meet your individual application
requirements depending on ambient temperature, type of equipment used,
method of application, humidity and amount of control desired and tip
spray applications. For best results apply two or more coats to achieve
the recommended DFT. For best results, apply with a conventional cup
gun. When applying additional coats, recoat within 4 hours or after 24
hours (lightly sand between coats as needed). Boot and bottom stripes
should always be applied over top of the recommended DFT. For best
results recoat within 4 hours or after 24 hours. Sand between coats
after 48 hours. Recommended minimum cure time is 5 days under most
conditions. The dry cured film may be wet sanded and buffed to remove
runs and blemishes. Allow top coat film to cure thoroughly before
allowing it to enter full service duty. Follow the same procedures as
above for applying SM-266 Urethane Clear, however, primer is not
required on most properly prepared surfaces. Clean all equipment
thoroughly with SM-605 Thinner. Do not leave unused paint in spray
equipment beyond the pot life of the material, it will set up hard.
What should I watch out for?
INCOMPATABILITY ISSUES: Our guaranty is void unless used only with
recommended Supermarine cleaners, thinners, accelerator/hardener and
primers. When painting over preexisting primer or paint be sure it has
cured before proceeding.
SOFTNESS OR WRINKLING: Strictly adhere to manufacturers recommended
minimum and maximum WFT and DFT. When Ironside Urethane has been applied
too thickly the coating may not dry or cure properly leading to mud
cracking or inferior finish or a failed application.
RUNS & SAGS: If you get any runs or sagging, usually, it has been
applied to thickly. Test for compatibility; we strongly recommend doing a
small test before committing to the entire project. If the film remains
soft after 48 hours, typically, it has been applied too heavily or a
mixing error has