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Keep Your Deck Dry with DecksDirect

A deck should be a gathering place, not a leaky mess. That’s where DecksDirect comes in. We help homeowners, DIYers, and pros build better, longer-lasting decks with top-quality materials and expert guidance.

Our under-deck drainage systems keep water from dripping through your deck boards, turning the space below into a dry, usable outdoor area. Whether you’re adding storage, creating a cozy patio, or just protecting your deck’s structure, we’ve got under-deck waterproofing solutions built to last.

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Which Under-Deck Drainage System is Right for You?

Under-deck drainage panels and systems do more than keep water out—they protect your deck’s structure and create usable space underneath. But the best system for you depends on whether you're building new or upgrading an existing deck.

Above-Joist Systems: Maximum Protection from the Start

Above-joint systems, designed to be installed before the deck boards, sit on top of the joists, preventing water from ever reaching the frame. By keeping moisture out, they extend the lifespan of your deck, reducing the risk of wood rot, mildew, and structural damage. If you're building a brand-new deck or replacing old boards, this is the most protective option.

Best for: New decks or full board replacements
Why choose it? Stops water at the source, preserving the deck frame
Popular option: Trex RainEscape

Below-Joist Systems: A Quick, Effective Upgrade

If your deck is already built, below-joist drainage systems offer an easy way to redirect rainwater and create a dry space underneath. Installed underneath deck boards, these systems funnel water away while allowing airflow to prevent moisture buildup. They don’t protect the joists as thoroughly as above-joist systems, but they’re a straightforward, DIY-friendly solution for keeping the lower level dry.

Best for: Existing decks that need an under-deck ceiling system
Why choose it? No need to remove boards—just install and enjoy a drier space
Need a finished ceiling look? Consider a dedicated UpSide under-deck ceiling system, or a ZipUP UnderDeck system, both of which combine drainage with a clean, polished aesthetic.

Why DecksDirect?

Big-box stores carry deck supplies, but they don’t offer the expertise or selection you need to build a long-lasting, weatherproof space. That’s where DecksDirect stands out.

Curated, High-Quality Products: We stock only the best under-deck drainage systems, so you’re not stuck sifting through low-quality options.
Real Experts, Real Help: Our team actually knows decking. Whether you need advice on under-deck waterproofing or a full deck drainage system, we’re here to help—no pushy sales, just honest guidance.
Fast Shipping, No Delays: We keep products in stock and ready to ship, so your project doesn’t sit in limbo.
Everything You Need in One Place: From drainage panels to under-deck ceiling systems, we carry the complete setup for a dry, protected deck—no hunting for missing parts.

With DecksDirect, you get more than just materials—you get the right solutions, shipped fast, with expert support every step of the way.

See It in Action: Get Inspired

Want to see how under-deck drainage panels and system can transform your space? Check out our photo gallery for real-world examples of dry, finished under-deck areas—from cozy patios to fully covered outdoor lounges.

Whether you’re planning a simple upgrade or a complete outdoor living space, these photos will help you visualize the possibilities before you start your project.

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Watch & Learn: Trex RainEscape in Action

Want a closer look at how the Trex RainEscape Deck Drainage System works? This video breaks down each component, walks you through the installation process, and shares pro tips for a smooth setup. Plus, see how adding lighting and other finishing touches can turn your under-deck space into a fully customized outdoor retreat.

General Wood Railing FAQs

How can I keep the area under my deck dry?

You can create a dry, usable space underneath your deck by installing an under-deck drainage system or a deck ceiling. A drainage system (sometimes called an "underdeck drainage system" or "underdecking") redirects rainwater away from the space below. Some systems include a deck ceiling, which creates a clean, finished look by attaching to the underside of your deck joists.

Do I need a drainage system under my deck?

Under-deck drainage isn’t required by building codes, but it makes your outdoor space more functional and better protected. A dry under-deck area gives you extra usable space, protects your deck frame from water damage, and allows for more furnishing options—like seating, rugs, or outdoor décor that benefit from some protection. It’s also a great storage solution for grills, smokers, furniture, and other items you want to keep out of the rain.

How do I know how much under-deck ceiling I need?

We’ve made it easy with our ZipUP Calculator—just enter your deck dimensions, and it will calculate how much of each ZipUP UnderDeck Drainage component you’ll need, along with a live cost estimate. For a more detailed estimate or to explore other drainage options, call us at 1-888-824-5316. Our team can help tailor a plan to match your deck vision and budget.

Installing Under-Deck Drainage FAQs

How hard is it to install an under-deck drainage system?

Installing an under-deck drainage system is easier than you might think, even for first-time DIYers. Each system has a slightly different installation method, so we’ve put together video tutorials for the most popular options.

Can I install an under-deck drainage system on an existing deck?

Yes! ZipUP UnderDeck Drainage and UpSide Deck Ceiling by Color Guard can be installed on an existing deck without removing deck boards. These systems attach beneath the joists, making them a simple and effective upgrade for decks that need a dry, finished space underneath.

What kind of gutter system can I use with under-deck drainage?

Under-deck drainage systems channel water to a designated spot, allowing you to pair them with any gutter system you prefer. Once installed, you can direct runoff into standard house gutters, a downspout, or a custom drainage solution to move water away from your home’s foundation.

Under Deck Drainage Maintenance FAQs

How do I clean an under-deck ceiling?

Cleaning an under-deck drainage system is simple. The visible ceiling panels can be wiped down with a damp cloth and mild soap. To check for drainage clogs, pour a few cups of clean water onto your deck and watch where it flows. If it doesn’t drain properly, locate the clog, remove a panel if necessary, and clear the blockage.

Make the Most of Your Outdoor Space with an Under Deck Drainage System

A dry, protected area under your deck opens up endless possibilities—extra storage, a cozy lounge, or a weatherproof grilling spot. The right under-deck drainage system, drainage panels, and ceiling system keep water out and give your deck a longer life. Get the best materials, expert support, and fast shipping from DecksDirect, so you can build with confidence and enjoy your outdoor space in any weather.