SizeThe Deck Tape Joists comes in 2 pack, The Total Length: 100ft/1180inches/30meter, the length of each roll: 50ft//590inches/15meter, width: 2inch/5cm, thickness: 0.03inch/7mm, butyl rubber material, black color, they can be used in a temperature range of -40°F to 150°F.Waterproof And Anti-corrosionThis Deck joist tape creates a waterproof that prevents wood decay. It has enough length to cover a normal-sized deck and 2 inches wide enough to cover the hard surface of the joists.Extend Deck LifeThe Deck Joist Tape 2 is a waterproof butyl adhesive, excellent thickness with excellent adhesion, is sticky on one side and stick flexibly flat, protects joists and beams from water damage and corrosion, suitable for Suitable for hot weather, rainy season, and is snow days.