3" x 75', Deck Flash Barrier Joist Tape, When Applied To The Top Of Deck Joists Creates A Waterproof Membrane That Prevents Wood Rot & Decay Caused By The Accumulation Of Water Under The Decking Boards, Super Grip Adhesive Can Now Be Installed At Temperatures Down To 25 Degrees Fahrenheit, Self Seals Around Screws & Nails, Blocking A Primary Pathway For Water Infiltration Into Deck Joists Thus Preventing Wood Rot, Creates A Physical Barrier That Prevents Corrosion Of The Metal Surface Caused By Contact With ACQ CA-B, & ACZA Treated Lumber, Can Be Used To Protect Metal Flashing, Joist Hangars, The Deck Plates, Sill Plates & Anywhere Treated Lumber Is Used, Roll.