Waterproof vs Water-Resistant Deck Systems

Deck Builders San Antonio · Apr 30, 2026 · 3m

This episode of Deck Builders San Antonio breaks down the difference between decks that are truly waterproof and decks that are simply water-resistant. We explain what it means to keep water out of the structure versus just shedding rain from the surface, and why that matters for elevated decks, balconies, and spaces over living areas. You’ll hear when an under-deck drainage system is enough and when you should be thinking about a full waterproof membrane system.

We walk through common approaches: traditional deck boards that let water drain through, under-deck drainage systems that catch and…