Waterproof Deck Systems for Second‑Story Spaces

Deck Builders Los Angeles · Apr 23, 2026 · 2m

In this episode of Deck Builders Los Angeles, we break down waterproof deck systems for second‑story and elevated outdoor spaces. If you have living space, storage, or a patio below your deck, or if you’re planning one, this conversation will help you understand when a standard deck isn’t enough and when a true waterproof system makes sense.

We start by explaining the difference between a regular deck surface that sheds some water and a fully waterproof system designed to protect what’s underneath. You’ll learn how membranes, drainage layers, and careful detailing at posts, railings, and door…