TotalBoat Marine Topside Paint Primer High performance one part marine topside paint primer. Compatible with both 1 and 2 part polyurethane and enamel finishes. Apply on wood, fiberglass, gelcoat, and over previously painted materials above the waterline via brush, roller, or spray. High build primer requires only a single coat. Fast drying, non-lifting. Contains no lead or chromates. Available in wihte and gray, in quart and gallon sizes &#034;Goes on easily, covers well and dries fast. Odor disappears fast also. When it&#039;s dry you can see any imperfections in the surface which are easy to fix by light sanding.&#034; <span class="a-text-italic">- John R. via Amazon Reviews</span> &#034;It went on a little thick so I thinned it a little. After drying the next day, I sanded it to smooth out a few imperfections. Sanded easily &amp; smoothed out nicely.&#034; <span class="a-text-italic">- M. Mitchell via Amazon Reviews</span>