Sea Hawk's Tuff Stuff High Build Epoxy Primer dries fast and is able to complete a barrier system and bottom paint in just two days. Microsheet silicate technology allows the epoxy to build a 100% water barrier that protects the surface from water penetration and moisture. Can be used on aluminum, bronze, stainless steel, cast iron, and lead both above and below the waterline. Effective on fiberglass or bilge coating as it helps prevent blisters and is resistant to oil and water. A universal primer it can be used for corrosion protection and for priming metal. The overlapping barrier created by Tuff Stuff prevents any direct path for water migration. Typical Film Thickness (sprayer): 6-7.5 mils dry film thickness per coat. (11.5-14.5 mils wet film thickness for smoother finish Typical Film Thickness (Roller): 3.6-4.2 mils dry film thickness per coat. (7.0-8.0) mils wet film thickness for smoother finish Recommended Coats: 2-4 depending on intended service