Waterproof Barrier Protection

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When this tape is applied to the top of decking joists, over ledger boards, and around support posts, it creates a waterproof seal that helps stop decay and wood rot. Rot is caused by moisture that stays in contact with treated and untreated lumber deck framing and the above decking material.

Wood decay can also occur when deck screws penetrate the deck boards, piercing the joist sub-framing below. The application of joist tape will also seal around decking screws preventing the intrusion of moisture and water.