DeckWise® JOIST TAPE™ is a malleable polyethylene waterproof wood flashing and material, using a rubberized asphalt mastic adhesive. Easily apply to decking joists, around deck support posts and over ledger boards. Each roll contains: 3" x 75'

Learn more about the Deckwise® Deck System and installation HERE: https://www.deckwise.com/deck-joist-barrier-tape.html