Extreme Seal is engineered to withstand extreme conditions and provide extra long-lasting seals. Unique features include: resistance to UV rays, stays where sprayed for less drip and mess, and paintable after curing. Extreme Seal is compatible with Great Stuff™ insulating foam, making it an ideal complementary product for Great Stuff™ foam that is used outdoors. Common applications include gutters & downspouts, skylights & windows, truck beds & undercarriage, roofing & chimney, foundation & weatherizing, finishing, awnings, campers, and rust protection.