If you’re looking to create a dry, usable space beneath your deck with a system like Trex RainEscape, you might be wondering whether it can be installed on an existing deck. The short answer is no, not without removing the deck boards.
Let’s dive into why this is the case and explore alternative options for achieving that dry under-deck space.
Why Trex RainEscape Requires Deck Board Removal
Trex RainEscape is a premium under-deck drainage system designed to channel water away, keeping the area below your deck dry and functional for outdoor living spaces, storage, or other uses. However, its installation process is specific and top-down, meaning it must be installed directly onto the deck’s joists before the deck boards are laid down. Here’s why:
- Installation Process: Trex RainEscape involves laying a network of troughs and downspouts over the joists to create a waterproof barrier. These components are secured and sealed to ensure no water leaks through. This setup can only be done with direct access to the joists, which isn’t possible if deck boards are already in place.
- Leak Testing: After installing the RainEscape system, it’s critical to test for water leaks to ensure the system is watertight.
- Decking Installation: Once the RainEscape system is installed and tested, the deck boards are placed on top of the joists, completing the deck. Attempting to install RainEscape under an existing deck would require removing all the deck boards, essentially rebuilding the deck from the joists up.
In short, if your deck is already built, installing Trex RainEscape would mean deconstructing the deck to access the joists, which can be labor-intensive and costly.
The Trex RainEscape system however is great because it keeps all that water off your joists which will add lifespan to your wooden joists. Since the pressure treated lumber does not last as long as the older versions of treated lumber which contained arsenic this is an ideal system to prolong your pressure treated framing lumber. Whats the point of building a deck with a composite or hardwood decking board that can last 50+ years if your wooden frame will only last 15-20 years?
Alternatives for Existing Decks
If removing your deck boards isn’t feasible, don’t worry—there are alternative under-deck drainage systems designed to work with existing decks. One such option is the ZipUp UnderDeck System. Unlike Trex RainEscape, ZipUp is installed beneath the deck, attaching to the underside of the joists without requiring deck board removal. Here’s why it might be a good fit:
- Non-Invasive Installation: ZipUp’s components are fastened to the bottom of the joists, creating a sloped drainage system that directs water away from the under-deck area. This makes it ideal for retrofitting an existing deck.
- Dry, Usable Space: Like Trex RainEscape, ZipUp creates a dry space below your deck, perfect for outdoor living areas, storage, or even a cozy patio.
- Cost and Labor Savings: Since you don’t need to dismantle your deck, ZipUp can save significant time and expense compared to installing Trex RainEscape on an existing deck.
Making the Right Choice for Your Deck
If you’re building a new deck or planning to replace your deck boards, Trex RainEscape is an excellent choice for a seamless, long-lasting under-deck drainage solution. However, for an existing deck, removing all the deck boards to install RainEscape may not be practical. In such cases, a system like ZipUp offers a convenient and effective way to achieve that dry under-deck space without the hassle of a full deck rebuild.
Before deciding, evaluate your deck’s condition, your budget, and how you plan to use the space beneath. Consulting with a professional installer can also help you choose the best system and ensure proper installation for years of worry-free outdoor enjoyment.
Got questions on under deck drainage systems give us a call at 1-877-232-3915