Size: Pack of 13" x 75', deck flash barrier, 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 Ace 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.