This Heng's Industries Butyl Roof Repair Tape is pliable, tacky and adheres to any type of metal, wood, concrete, glass, plastics and porous surfaces. Specifications•Used To: Seal And Bond Around Windows/ Doors/ Vents/ Joints To Rubber Roofs/ Metal/ Wood/ Concrete/ Glass/ Pl•Roof Type: Rubber Roofs/ Metal/ Wood/ Concrete/ Glass/ Plastic•Type: Butyl Tape•Length: 20 Feet•Width: 1 Inch•Color: White Pliable, Tacky & Adheres To Any Type Of Metal, Wood, Concrete, Glass, Plastics & Porous Surfaces Excellent Sealant For Any Lap Joints Can Be Cut With A Utility Knife | Heng's Industries Roof Repair Tape, 1" x 20', Off White