In this story we'll cover the basics and suggest a couple of boat bottom paints. Only then can you intelligently pick the right product for your boat and its geographic area of operation. But the big question is with the different types of anti-fouling lining the shelves of marine chandler's which one is the best choice for your boat? The answer is that in order to sort through the many offerings, it's vital to understand the basic differences between them. And that in order to inhibit marine growth we rely on quality boat bottom paint. You already know that without bottom paint dutifully protecting the bottom of a boat that barnacles, zebra mussels, weeds and slime would proliferate dragging down acceleration, top speed and helm response. Some bottom paint may require more than 2 coats.About Boat Bottom Antifouling Paint Boat Bottom Paint Essentials See the specific Technical Data Sheet for bottom paint being used. Allow 3 to 6 hours between coats and a minimum overnight dry.
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If the marine epoxy primer is not sanded after full cure, bottom paint will not adhere.Īpply Bottom Paint to Marine Epoxy PrimerĪpply minimum of two coats of bottom paint. However, if the coating is completely cured (after 24 hours) it needs to be thoroughly sanded with 80 grit sand paper to remove shine. An easier rule in epoxies is when the coating is dry to the touch, yet still has some tack, it is ready to be over coated. When over coating Tuff Stuff Epoxy Primer it is important to meet the required over coating times in order to achieve the best adhesion because temperature and humidity control dry times. Tip: When applying marine epoxy primer over multiple days, it is always best to go overnight between coats of marine epoxy primer instead going overnight between the final coat of marine epoxy primer and the first coat of bottom paint. You should use this method in between coats of marine epoxy primer and your first coat of bottom paint.
You should be able to firmly press your thumb into the paint film and leave a thumbprint without any high build marine epoxy primer coming off the surface. Temperature and humidity affect the dry time, but you will know when to apply your next coat of marine epoxy primer once the paint film becomes “tacky”. Apply the first coat of marine epoxy primer and allow the surface to dry to become tacky. Seal the surface with 2-3 coats of Tuff Stuff Epoxy Primer. Sand to a uniformly frosty, dull looking surface with 80-100 grit (no finer) sandpaper, rewash with S-80 Wax N’ Grease Killer, S-90 De-Wax Etch & Cleaner. If necessary repeat step 2 again until the surface is contaminant-free. Do not allow cleaner to dry on the surface and remove by flushing with water.Rinse entire surface with water and check for any beading on the surface which will indicate that wax is still present. Apply S-90 De-Wax Etch & Cleanerwith a maroon 3M Scotch-Brite® padscrubbing thoroughly. Be sure to remove any residue before it dries and change rags frequently to insure contaminants are completely removed.ī. Saturate cheesecloth rag and wipe thoroughly to remove any cleaner and contaminants. Clean and de-wax fiberglass hull with S-80 Wax N’ Grease Killersolvent based dewax. Scrub the surface with a detergent soap and stiff bristle brush.Ī. When painting a bare fiberglass / gel coat hull for the first time, it is extremely important that all contaminants such as grease, oil, wax, salt, or other foreign material are completed removed prior to sanding or application of a Sea Hawk System. Here are the steps that you need to take for proper application of a marine epoxy primer (barrier coat system) to the bottom of a boat.
It also provides added adhesion of the bottom paint to the hull. Marine Epoxy systems on the bottom of bare fiberglass is the best way to protect your boat against blisters.
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