Under-Deck Drainage and Waterproof Systems: Keeping the Space Dry

Deck Builders Pittsburgh · Mar 30, 2026 · 3m

On this episode of Deck Builders Pittsburgh, we talk about something many homeowners overlook until it is too late: how to keep the area under your deck dry and usable. If you have a raised deck or are planning one as part of a backyard renovation, the space underneath can become valuable storage, a covered patio, or even part of a larger outdoor living setup. But without proper drainage or waterproof systems, that area can stay wet, muddy, and unusable for much of the year.

We explain the difference between simple under-deck drainage that directs water away from the space below and true…