This Lasalle Bristol Butyl Roof Repair Tape is used to seal around windows, doors, and vents. Specifications•Used To: Seal And Bond Around Windows/ Doors/ Vents•Roof Type: Rubber Roofs/ Metal/ Wood/ Concrete/ Glass/ Plastic•Type: Butyl Tape•Length: 30 Feet•Width: 3/4 Inch•Color: Gray Butyl Tape Gray | Lasalle Bristol Roof Repair Tape, 30'L x 3/4"W, Grey