Self-Leveling (for horizontal surfaces) Helps create a watertight seal along a roof's edges, around air vents, vent pipes, and screw heads. Compatible with any other roofing material. Also offers excellent adhesion to aluminum, mortar, wood, vinyl, galvanized metal, and concrete. It improves the ability to continuously seal and remain flexible. Color-matched, the lap sealant is UV stabilized to prevent discoloration and deterioration and will not stain or discolor any material to which it is applied. 10.3 oz. tubes.