Use as a base coat whenever the surface to be painted is aged, cracked, checked, pitted, or in any way less than smooth. It can be applied to fiberglass, wood, and previously painted surfaces. Dries quickly and is easy to sand. Formulation: One-part high-build primerNumber of Coats Recommended: 1 or more, depending on surface conditionDrying Time: To recoat: 2-16hrs. Coverage: 100sq. ft./qt., 400sq. ft./gal. Thinner: Spray: 121, Model 249995; Brush: 120, Model 249661Color: White Easy to sand | Pettit Undercoater, Gallon in White