Through the Roof is the clear, ultra-elastic roof repair caulk made to permanently stop and prevent roof leaks. It effectively seals around a variety of rooftop fixtures and roofing materials without the messy look of asphalt. Through the Roof won"t dry hard and crack, and it expands and contracts with temperatures changes. It can be applied to wet surfaces and exposed to rain or snow immediately, and Through the Roof won"t turn brittle in the sun or cold. It adheres to different types of metals, plastics and other surfaces to seal almost anything that goes Through the Roof. Sticks to wet surfaces. It is paintable. Water and mildew resistant. Won"t freeze. Stop-flow plunger. Use Through The Roof! on common roofing fixtures and materials, including galvanized metal and aluminum flashing, PVC and ABS vent pipe, skylights, gutters and downspouts, ductwork and vents, chimneys, brick/block/mortor, shingles and shakes, flat roof tile, metals RV roof. Note, do not use with polystyrene insulation or in containment applications.