TREX Protect Joist & Beam Tape: Premium Butyl-Based Substructure Protection

Protect your deck from moisture with Trex Protect — a self-adhesive, non-skid deck flashing tape. This professional-grade butyl-based tape is designed to shield rims, joists, beams, and ledger boards from water intrusion that leads to wood rot and structural decay. By creating a watertight seal around deck fasteners, Trex Protect ensures your deck’s foundation lasts as long as the high-performance decking above it.

Why Choose Trex Protect?

• Unparalleled Moisture Shield
  Acts as a crucial barrier between your deck's substructure and decking material, effectively stopping water intrusion. It protects the wood from developing rot and decay at its most vulnerable points.
• Superior Fastener Seal
  The butyl-based adhesive helps deck screws hold longer and stronger than acrylic or asphalt-based tapes. It seals around the fasteners to prevent moisture penetration into the joists.
• Structural Integrity
  Eliminates splitting caused by freeze and thaw cycles and acts as a barrier between the wood and galvanized metal components, such as joist hangers.
• Comprehensive Ledger Protection
  Specialized Trex Seal and Subseal options provide superior flashing for the ledger board, preventing water from reaching the house structure and ensuring a dry, safe connection.
• Long-Term Assurance
  Designed to withstand the harshest elements, including rain, snow, and UV rays. Backed by a 25-year manufacturer warranty for lasting peace of mind.

📏 Available Sizes & Application

Trex Protect is available in 50' lengths and specific widths for every part of your substructure:

• Joist Tape (1-5/8″ x 50′): Designed for standard single joists
• Beam Tape (3-1/8″ x 50′): Ideal for all double beams
• Rim Tape (11″ x 50′): For rim joists, stairs, and flat-blocked surfaces
• Trex Seal Ledger Tape (11″ x 50′): Superior aluminum-lined flashing for the ledger board
• Subseal Ledger Tape (22″ x 50′): Extra-wide protection for the entire ledger and surrounding house wrap area

🛠️ Simple Three-Step Installation

1. Clean: Ensure the surface is dry and free of debris.
2. Apply: Remove the backing while applying directly to the surface. Firmly press the tape onto the wood by hand.
3. Cut: After covering all horizontal and vertical surfaces, cut the tape to length with a utility knife or scissors.

🛡️ Warranty & Resources

• Protection: Backed by a 25-Year Limited Warranty
• Expert Guide: Why Joist Tape is the Rot Insurance Your Deck Needs
• Video Tutorials: Why Choose TREX Protect? | Installation Help Video

Pairs well with TREX Composite Decking