Under-Deck Space: Storage, Patios, and Dry Outdoor Rooms

Deck Builders Seattle · Sep 3, 2026 · 2m

In this episode of Deck Builders Seattle, we talk about how to make better use of the space under an elevated deck. Many homeowners have a second-story deck with an area below that is dark, wet, and mostly unused. With the right planning, that area can become dry storage, a lower patio, a protected seating zone, or part of a larger backyard renovation.

We start by explaining the difference between an open deck and a waterproof deck system. Standard wood and composite decking allow rainwater to drain through gaps between boards. That is completely normal when the area below is just a yard. But…