TREX RainEscape® Butyl Tape: Professional Seam & Joist Sealing

TREX RainEscape Tape is a critical component of the RainEscape drainage system, providing an air-tight, waterproof seal that protects your deck’s substructure from moisture damage. Made from durable butyl-rubber material, this self-adhesive tape is designed to bond tightly to joists, downspouts, and trough seams for maximum protection and longevity.

Product Features

• Coverage:
  1 roll covers approximately 50 sq. ft. (based on 16″ on-center joists)
  
  
• Size:
  4" wide × 50' long roll — trim to fit as needed
  
  
• Material:
  Butyl-rubber for long-term water and air resistance
  
  
• Adhesive Backing:
  Self-adhesive for easy flush mounting on joists and around penetrations
  
  
• Deck Compatibility:
  Works with any joist material and all decking brands

Key Benefits

• Moisture Barrier:
  Prevents water infiltration that can cause rot, mold, and decay in the deck frame
  
  
• Extended Lifespan:
  Helps deck screws stay stronger and substructure last longer
  
  
• DIY Friendly:
  Easy to apply — just peel, stick, press, and seal
  
  
• Versatile Usage:
  Ideal for sealing around RainEscape Downspouts, trough overlaps, and joist seams

Installation Guidance

• Apply tape over joist tops before laying decking boards
• Use to seal around downspouts, trough edges, and other system connections
• Press firmly to ensure full adhesion, especially at edges and overlaps

Why Choose TREX RainEscape Tape?

This weather-resistant tape is a simple but powerful addition to your deck build, helping preserve the integrity and beauty of your structure for years to come. When used with other RainEscape components, it ensures the under-deck area remains dry, safe, and ready for use as storage or additional living space.

Protect your investment!

Read our guide on why Joist Tape is the Rot Insurance Your Deck Needs to ensure your structure lasts for decades.

Related Products

• TREX RainEscape Downspouts
• TREX RainEscape Troughs
• TREX RainEscape Wall Flash

Have installation questions or need help planning your deck drainage?
Contact us or stop by your nearest Deck Store showroom.