Peel & Seal PowerBond White 250 is a 25 mil patented cross-linked waterproofing tape with a highly aggressive PowerBond adhesive system that adheres in cold temperatures down to 25°F (-4°C). Peel & Seal PowerBond White 250 is thinner and more aggressive than normal Peel & Seal, making it easier to install. It is specifically designed to tape seams on insulated aluminum panels or can be used as a flashing material for roof and gutter repair, window flashing and as a general-purpose waterproofing product. Peel & Seal PowerBond White 250 may be left exposed to sunlight indefinitely.