Sta-kool 390, 10.1 oz, elastic white roof patch. An extra tough, flexible repair compound designed to patch splits, cracks & holes in roof surfaces, water based patch dries quickly & offers great adhesion to all coatings applied over it, designed to repair cracks & holes up to 1" in width, remains flexible while it expands & contracts with your repair, do not allow to freeze, surface must be clean & dry, allow to cure 24-48 hours.