In Tennessee, where rain, humidity, and even the occasional freeze are part of the seasonal mix, protecting your deck from water damage isn’t just smart — it’s essential. Whether you’re in Franklin, Brentwood, Spring Hill, or the surrounding Middle Tennessee area, the right deck drainage solution can help extend the life of your deck, prevent costly repairs, and preserve the beauty of your outdoor space.

At Decked Out Tennessee, we specialize in building decks that are not only beautiful but built to last — rain or shine. Here’s how we do it.

Under-Deck Drainage Systems: Protect What’s Below

If your deck is elevated, installing an under-deck drainage system can transform the space underneath into a dry, usable area. These systems:

• Catch water that drips between boards

• Redirect it away from your foundation and support beams

• Allow for dry storage, patios, or outdoor entertainment areas underneath

• Help prevent wood rot, mildew, and staining on lower-level finishes

We install both above-joist and below-joist systems, depending on your deck’s design and intended use of the space below.

Proper Deck Slope and Ventilation

A slight slope is crucial for letting water run off your deck rather than pooling. When building or evaluating your deck, we ensure:

• A quarter-inch slope per foot, away from the house, to guide water off the deck

• Gaps between boards are uniform and unobstructed to aid water flow

• Adequate airflow beneath the deck, which helps dry out moisture and prevent trapped humidity

Proper ventilation combined with slope prevents mold, mildew, and premature wood deterioration, especially in humid Tennessee summers.

Gutter Integration for Rain Management

Many homeowners forget that gutters and downspouts are just as important for decks as they are for roofs. We often recommend:

• Installing gutters on second-story decks or overhanging roofs to direct water away from the deck surface

• Using downspout extensions to guide water far from the base and prevent erosion

• Adding drip edges to rooflines near decks for extra splash protection

Without proper water diversion, rainwater can collect around posts or pool near your home’s foundation — a risk no homeowner wants.

Preventing Ice Damming in Tennessee Winters

Though Tennessee doesn’t see harsh winters, we do get freezing temperatures — and that’s when ice damming can become an issue. Poor drainage combined with cold snaps may cause:

• Ice buildup in deck corners

• Warping and cracking of decking material

• Unsafe, slippery surfaces

To prevent this:

• Ensure drainage systems are clear before winter

• Avoid sealing gaps or vents that allow cold air circulation

• Consider composite decking materials that resist ice adhesion

Our team ensures decks are winter-ready while still staying safe, functional, and easy to maintain all year.

Protect Your Deck — and Your Investment

Water damage can sneak up fast — but it’s 100% preventable with the right design and maintenance. At Decked Out Tennessee, we’ve helped homeowners throughout Franklin, Brentwood, Spring Hill, Columbia, and Nolensville safeguard their decks against the elements.

Let us help you design or upgrade your deck with smart drainage solutions that protect your investment for years to come.