Trex Protect Joist Tape is a self-adhesive butyl tape designed to protect the top of your joist or beam from moisture that can lead to joist rot and loosening of the deck screws and fasteners. It seals around all fasteners, inhibiting moisture.
Protects the top of the joist, rim joist and ledger board from development of rot and wood decay.
Helps deck screws hold longer and stronger.
Acts as a barrier between wood and galvanized metal such as joist hangers.
Seals deck fasteners and prevents moisture penetration.
Eliminates splitting from freeze and thaw.