Trex Downspout

The Trex Downspout is an important part of the Trex RainEscape® under-deck drainage system. Its job is to collect water from the Trex Troughs and direct it safely away from your deck framing, keeping the space below your deck dry and usable. By controlling where the water flows, the downspout helps protect the structure of your deck and extends its lifespan.

Made from durable, waterproof material, the Trex Downspout is designed to handle heavy rain and snow. It fits neatly into the RainEscape system, working with troughs and butyl tape to create a complete, watertight seal. Once installed, the downspout channels water through the system and away from critical areas, preventing moisture damage and reducing the risk of rot or mildew.

Each downspout is lightweight, flexible, and easy to install. Contractors save time with its simple design, while homeowners gain peace of mind knowing their deck is protected year-round. The Trex Downspout is a key piece in transforming the area under your deck into a dry, comfortable outdoor living space — perfect for seating, lighting, or storage.

Key Features

• Part of the Trex RainEscape® drainage system
• Directs water away from deck joists and framing
• Durable, waterproof material built for all climates
• Lightweight, flexible, and easy to install
• Helps prevent rot, mildew, and structural damage
• Extends deck life while keeping space below dry