Trex RainEscape Wall Flashing 1/4" X 1" X 25'

The Trex RainEscape Wall Flashing (1/4" x 1" x 25') is a simple but highly effective component for protecting one of the most vulnerable areas in any deck system—the ledger board connection to the house. This product is designed to compress between the deck framing and the house wall, creating a tight moisture barrier that helps prevent water intrusion, rot, and long-term structural damage. It’s not flashy, but it’s clearly engineered with purpose and fits seamlessly into a professional deck build. Installation is straightforward during new construction. The adhesive backing sticks well, and once the first deck board is installed, the foam compresses cleanly to form a snug seal. As with most waterproofing components, the quality of the installation matters—alignment and proper compression are key to getting the best performance. It integrates especially well with the Trex RainEscape system, but it can also be used in other decking applications where ledger protection is needed.

• Easy to install during new deck construction
• Compresses well to form a reliable moisture sea
• Helps protect ledger board from rot and water damage
• Clean, low-profile design that stays hidden once installed
• Works well as part of a full waterproofing system