What Is Trex RainEscape?
If you want to make the space beneath your deck more functional, Trex RainEscape is a smart solution. This under deck drainage system keeps the area below your deck dry by capturing rainwater and directing it away from your home.
Unlike surface-level drainage systems, Trex RainEscape sits between the joists and shields everything underneath. It helps protect the deck from moisture damage and creates a clean, dry area below. You can turn that space into an inviting outdoor living area, perfect for lounging, dining, or storage.
How Trex RainEscape Works
Trex RainEscape works by creating a hidden layer of protection between your deck boards and the ground below. Instead of letting rainwater seep through the boards, this deck drainage system catches water as it falls and channels it safely away.
The Trex under deck drainage system uses a network of troughs and downspouts that fit between each deck joist. As water hits the deck surface, it flows into the system, where it is directed toward a gutter system at the edge of the deck. From there, the water drains away from the house, keeping the area underneath completely dry.
By creating a waterproofing barrier above the joists, Trex RainEscape helps maintain the structural integrity of the deck. It also transforms the space below into a dry space that can be finished with lighting, fans, ceilings, or furniture without worrying about water damage.
Benefits of Using Trex RainEscape
One of the biggest advantages of Trex RainEscape is the under deck waterproofing it provides. By keeping rain and snow away from the lower level of your deck, it protects your investment and extends the life of your deck structure.
Trex RainEscape makes it easy to turn the space below into beautiful outdoor spaces. Once the area stays dry, you can add a finished ceiling, lights, and fans. You can also create an inviting space for relaxing or entertaining year-round.
Protecting your deck from water damage is critical, especially if you have a wood deck. Moisture can lead to rot, mold, and mildew, which can be expensive to repair. Trex RainEscape helps stop these problems before they start by creating a strong, reliable barrier against the elements.
Homeowners like that Trex RainEscape is easy to install when building their homes. These products use high-quality materials and manufacturers build them to last. By helping you create a waterproof barrier, it opens up possibilities for a much more usable and enjoyable outdoor area.
Trex RainEscape Installation Guide
Plan Your Drainage Layout First
Before starting installation, take time to plan the entire under deck drainage system. Measure your deck carefully and review the joist spacing to figure out where the troughs and downspouts will fit. Good planning at this stage helps avoid mistakes later, especially for a two-story deck or a large layout.
Install the Troughs and Downspouts
Once the layout is ready, the next step is installing the trough material over the deck joist system. The troughs direct water into the gutter system or attached downspouts. Each component is lightweight, flexible, and made to fit most deck designs with little trimming or adjustment.
When installing over an existing deck, modifications might be necessary to slip the material between the boards. In new builds, the process is much smoother and quicker.
Create a Dry, Usable Space
After the drainage system is secured, you create a dry space underneath the deck that is ready for finishing. Many homeowners add a ceiling, Trex lighting, or outdoor fans to complete the area. Using a proper system helps install an under deck drainage solution that transforms unused deck areas into functional living zones.
Cost of Trex RainEscape
The cost of Trex RainEscape depends on the size of your deck and the components you need. On average, materials for a standard two-story deck range from $4 to $6 per square foot. This includes troughs, downspouts, and other accessories needed to complete the system.
When planning your budget, it’s important to consider that installing a deck waterproofing system during the initial build is usually more affordable than retrofitting one into an existing structure. Labor costs can also vary if you hire a professional, although many homeowners find that the system is simple enough to install themselves.
If you are calculating the full Trex RainEscape cost, be sure to factor in materials, accessories, and optional labor expenses. While the upfront cost may seem like an extra investment, protecting your outdoor structure from water damage can save thousands of dollars in repairs over time. Choosing Trex RainEscape adds long-term value by helping you maintain a clean, dry space underneath your deck.
Understanding the Trex RainEscape Components
Trex RainEscape is made up of several key parts that work together to create a dry, protected space below your deck. Each component plays a specific role in guiding water safely away from the structure.
Troughs
The troughs are flexible sheets that lay over the deck joist system. They collect rainwater and direct it toward the downspouts. The design fits most joist drainage systems without heavy cutting or custom fitting.
Downspouts
Downspouts are attached at the ends of the troughs to move water down and out of the deck area. A Trex RainEscape downspout fits snugly between the joists and connects to the lower gutter or drain line.
Butyl Tape and Accessories
Special butyl tape and accessories help seal seams and gaps in the system. They keep the troughs securely attached and help maintain a tight waterproof seal across all deck areas.
Installing these components correctly ensures the under deck drainage systems work efficiently to protect your deck framing and outdoor living space below.
Is Trex RainEscape the Best System for Existing Decks?
Homeowners often ask if Trex RainEscape can work for an existing deck. Although the designers created the system for new construction, you can install it on older decks with some additional effort.
For existing decks, the installation process usually involves lifting the deck boards or sliding the drainage material between the joists. While it takes more time compared to a new build, it still provides complete protection once finished. It remains one of the few deck drainage systems flexible enough to retrofit without needing to rebuild the structure.
Adding a under deck drainage system protects the frame, joists, and fasteners from moisture. By keeping everything dry, it helps prevent costly damage like rot and mold. Compared to other options on the market, RainEscape Trex stands out for its durability and ability to create dry, usable space beneath your deck.
If you want the best under deck drainage system for existing decks, Trex offers a reliable and cost-effective solution that can add years of life and value to your outdoor living area.
Frequently Asked Questions (FAQ’s)
An under-deck drainage system catches rainwater that falls through deck boards and channels it into a gutter system. It installs either above or below the joists to protect the structure and keep the space dry. By guiding water away, it helps prevent rot, mold, and water damage. It also creates a usable outdoor area underneath the deck.
Trex RainEscape is an above-joist drainage system that installs before deck boards go down. It uses plastic troughs and downspouts to capture rainwater and move it into a gutter. This keeps the wood framing dry and protects the deck from moisture damage. It also lets you create a dry, finished outdoor living space below the deck.
Installing a system like Trex RainEscape involves stapling downspouts between the joists and draping waterproof troughs over them. The troughs slope toward the downspouts, channeling water away to the gutters. All seams are sealed with butyl tape and caulk. Most homeowners can install it themselves with basic tools like a staple gun and utility knife.
Yes, you can add a drainage system to an existing deck. To install Trex RainEscape, you would need to temporarily remove deck boards. Alternatively, a below-joist system attaches underneath without removing boards but doesn’t fully protect the joists. Both options can create a dry space under your deck.
Most under-deck drainage systems cost around $4 to $8 per square foot. Simpler DIY kits are on the lower end, while premium systems like Trex RainEscape cost a bit more. Professional installation adds to the price, usually bringing it to about $6–$8 per square foot. Doing it yourself can help save on labor costs.
Installing a system keeps the area under your deck dry, making it usable year-round. It protects your deck structure from rot and mold, helping it last longer. You can also add a finished ceiling, lighting, and fans to create a true outdoor room. Plus, it improves drainage around your home’s foundation.
An under-deck drainage system is worth it if you want to protect your deck and gain usable outdoor space. It prevents water damage, extends the life of the deck, and creates a dry area underneath. Homeowners in wet climates especially benefit from installing one. Over time, it can also add value to your home.
Above-joist systems (like Trex RainEscape) offer the best protection by keeping joists completely dry. They require installation during deck construction or while re-decking. Below-joist systems are easier and cheaper to add later but still let joists get wet. Your choice depends on your budget, goals, and whether the deck is new or existing.
Most quality under-deck drainage systems last 20–30 years when properly installed. Trex RainEscape comes with a 25-year warranty. Maintenance is minimal but important: clear gutters and downspouts a few times a year and check for debris buildup. Occasional inspection keeps the system working efficiently.
Maintenance involves keeping gutters, downspouts, and troughs free of leaves and debris. Flush the system with a hose once or twice a year to ensure smooth drainage. Inspect for loose parts, sagging material, or clogged outlets after storms. Quick cleanings and checkups keep the system performing well long term.
