It is used to stop leaks & rustproof metal surfaces. It is used on aluminum, glass, vinyl, steel & wood. It covers 100 square feet per gallon on smooth surface & 25 square feet per gallon on porous surface. Semi self-leveling, paintable & mildew resistant coat's application temperature range is from 0 to 140 degree fahrenheit. It requires 2.5 hours tack free time & 5 days cure time.