How do I prep for gelcoat? If the gelcoat is in good condition with no major cracking or crazing, the job is relatively straightforward—clean and prepare the surface, apply an epoxy primer, sand the primer, remove the sanding residue and then apply the topcoat. So, the gelcoat on your boat is looking chalky and faded.
Do you have to prime for gelcoat? If the boat is taken down to gelcoat, is primer needed when applying bottom paint? Primer for bottom paint is not necessary. However, if you use Tuff Stuff marine epoxy primer on the bare fiberglass, it will provide protection against blisters and any moisture. It will also improve adhesion to the hull.
What is the best way to apply gelcoat?
Do you need to sand fiberglass before gelcoat? You do not have to sand it down to raw fiberglass. Make sure you use proper safety equipment, like dust masks. If you DO have raw fiberglass spots, you are just going to lightly hit those spots to clean them up. These areas will usually require a second coat of gelcoat.