Has your boat developed a blister or two? You need not worry because a blister is not a serious issue. Blisters very rarely get so bad that they cannot be repaired. You can even repair them yourself!
Needed materials: Acetone, sanding block, Hawk Epoxy, acid safe disposable brushes
Make sure the blisters are drained and grind them deep enough to remove any damaged material beneath the gelcoat. Increase size of ground area as needed until all the laminate around the blister is sound. Clean the entire area and allow it time to dry.
Hawk Epoxy is a low viscosity epoxy system that makes fiberglass repair easy for everyone! Equipped with a wide variety of Catalysts and fillers, you can mix up the exact epoxy batch needed for almost any job. goes on like putty to fill, patch, seal or rebuild aluminum, wood, concrete, fiberglass and steel. Hawk Filler can be drilled, tapped, or machined.
Mix on a non-porous surface. Do not mix on cardboard, paper-based and/or porous surface. Wear tight-fitting rubber gloves. Using equal parts of Part A and Part B, mix thoroughly to even uniform color. Mix using a putty knife, trowel or spatula. Apply immediately after mixing.
Apply using a putty knife, spatula or trowel. Spread smoothly on the surface in a 1/8″ – 1/4″ layer using heavy hand pressure to displace air bubbles/voids. If applying multiple coats, begin spreading away from the previously applied film so as not to trap air bubbles or leave an uncoated surface area. When using as a patch or grout, force material into hole or joint and smooth to the thickness needed.
Wear chemical resistant gloves. Mix leftover Part A and Part B, allow curing before disposing. Scrape up spilled material with a putty knife or cover material with an absorbent material and sweep into a container for disposal. For product already mixed, use acetone.
After repairs paint with Sea Hawk bottom paint or if redoing the hull apply Tuff Stuff primer, followed by bottom paint.
If the blister has damaged the fiberglass that will need to be repaired with fiberglass cloth cut to match damaged area.