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The Deck Store is Canada’s premier deck and outdoor living design, supply, and build company.
We are the largest volume dealer of decking and outdoor building materials in the Canadian market.

We are Your Outdoor Living Specialists! Trust us to help you create your ideal Outdoor Living Space.

TREX Protect Joist & Beam Tape

CA$33.75CA$179.85 + HST

Protect your deck from moisture with Trex Protect – A self-adhesive, non-skid deck flashing tape. This butyl-based tape is designed to shield rims, joists and beams from moisture that can lead to wood rot and decay.

Available in 50′ lengths

  • Protects the top of the joist, beam, and rim joist from developing rot and wood decay
  • The butyl-based tape helps deck screws hold longer and stronger than acrylic or asphalt-based tape
  • Acts as a barrier between the wood and galvanized metal such as joist hangers
  • Seals deck fasteners and prevents moisture penetration
  • Eliminates splitting from freeze and thaw
  • Provides a non-skid surface making it safer during installation
  • Available in three widths for joists, double beams and rim joists
  • Backed by a 25-year warranty

Simple Three-Step Installation Process

  1. Clean the joist surface making sure it is dry and free of debris.
  2. Remove the butyl tape backing while applying directly to the surface. Run your hand over the tape and firmly press it onto the joists and beams.
  3. After covering all horizontal and vertical surfaces, cut the tape to length with a utility knife or scissors.


  • Apply to horizontal and vertical surfaces including all joists, rim joists, beams, steps, stair stringers, blocking, ledger board, and under joists hangers.
  • Trex Protect is available in three widths:
    • Use 1-5/8″ x 50′ (41.3 mm x 15.24 m) Joist Tape for joists;
    • Use 3-1/8″ x 50′ (79.4 mm x 15.24 m) Beam Tape for all double beams;
    • Use 11″ x 50′ (279.4 mm x 15.24 m) Rim Tape for rim joists, stairs, and all flat-blocked surfaces


Revitalize Your Deck with TREX Joist Tape

Enhance your deck’s protection and longevity with TREX Joist Tape. Specifically designed for TREX decking systems, this essential accessory offers robust defense against moisture infiltration, ensuring your deck’s substructure stays protected for years.

Unparalleled Moisture Protection

Joist Tape acts as a crucial barrier between your deck’s joists and decking material, effectively stopping water intrusion and preventing decay. Its advanced adhesive formulation creates a watertight seal, keeping moisture from compromising your deck’s structural integrity. Made from premium materials, Joist Tape withstands the harshest elements, including rain, snow, and UV rays, without losing its effectiveness. Trust TREX Joist Tape to shield your deck from moisture-related damage and extend its lifespan.

Effortless Installation Process

Installing Joist Tape is quick and easy. Apply the tape to the tops of your deck’s joists before laying down the decking material. The self-adhesive backing ensures a secure attachment, and the flexible material conforms perfectly to the joists’ contours, giving you a professional finish. With TREX Joist Tape, you streamline your deck-building process while adding critical protection.

Secure Your Deck’s Future

Don’t let moisture threaten your deck’s durability. Invest in Joist Tape to provide essential protection for your deck’s substructure. Enjoy peace of mind knowing your deck can withstand the elements for years. With Joist Tape, you can confidently spend time in your outdoor space, assured that your deck is built to last.

Why Choose TREX Protect?

Installation help video 

Pairs well with TREX Composite Decking

Additional information


1-5/8" Joist Tape, 3-1/8" Beam Tape, 11" Rim Tape


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