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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.

RainEscape 4×4 Post Flash

CA$20.70 + HST

  • Easily installed by any homeowner or deck builder
  • Can be installed on any 4″ x 4″ (10.16 cm x 10.16 cm) post
  • Speeds up installation and ensures a waterproof fit
  • Create a dry, useable space below your deck
  • Protect the deck substructure from moisture
  • Once installed, the dry space below the second-story deck can be used for additional living space or storage.
SKU TXREPF Categories ,


Protect Your Deck with TREX RainEscape Post Flash

Keep your deck’s substructure dry and damage-free with TREX RainEscape Post Flash. Designed to integrate with the RainEscape system, this accessory protects against moisture infiltration around your deck posts, safeguarding your investment and enhancing the longevity of your outdoor space.

Superior Moisture Protection

Post Flash offers a crucial barrier that prevents water from seeping into the critical areas where your deck posts meet the substructure. This advanced flashing solution diverts water away from the posts, preventing potential wood rot, mold, and structural damage. By keeping these areas dry, Post Flash helps maintain the integrity of your deck’s foundation, ensuring it remains sturdy and secure for years to come.

Constructed from high-quality, weather-resistant materials, Post Flash withstands the harshest outdoor conditions. Whether exposed to heavy rain, snow, or intense UV rays, this flashing maintains its protective properties without degrading over time. Its robust construction ensures long-lasting performance, providing continuous protection against moisture-related issues and extending the life of your deck.

Easy Installation Process

Installing Post Flash is straightforward and efficient, making it a practical choice for both DIY enthusiasts and professional contractors. The flashing fits securely around your deck posts, creating a watertight seal that prevents water infiltration. Simply position the Post Flash around the base of each post before installing the decking material. The flexible design conforms to the contours of the posts, ensuring complete coverage and protection.

Enhance Deck Performance and Longevity

Incorporating Post Flash into your decking project enhances the performance and longevity of your deck. By protecting the posts and substructure from moisture damage, you reduce the risk of costly repairs and maintenance. This proactive measure ensures your deck remains beautiful and functional for many years, providing a safe and inviting environment for family and friends.

Installation help

For use with the TREX RainEscape System