BEHR Weatherstrong is a high performance hybrid sealant that provides superior stretch and durability on the most difficult substrates. It can be applied in both wet and dry conditions and can seal active leaks up to 1/4 in. size. Ideal for expansion and control joints， roofing and flashing applications， as well as sealing joints between most vinyl siding， fiber cement， aluminum， most metals， and other common building materials. Not intended for underwater applications， such as pools， fountains and boats.
Strong bond to difficult substrates
Easy gunning， smooth tooling (consistent flow/no air pops)
Paint-ready (brush/roll) in 1 hour
Wet surface/in-rain application
Seals active leaks
Reduced dirt pick-up
Non-yellowing
Asphalt compatible
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