How to Prep a Deck Before Staining

Dirt, mildew, and old stain prevent absorption. The deck is cleaned with the appropriate cleaner and pressure-washed where needed. Stain applied over dirt and mildew does not penetrate — it sits on top and fails fast.

After cleaning, the wood needs 24–48 hours of dry weather before staining. Staining over damp wood is the most common cause of premature stain failure — the moisture blocks absorption. We schedule around dry conditions.

Splinters and rough spots are sanded. Rotted boards are flagged — stain does not fix decay. Once the wood is clean, dry, and sound, it is ready to absorb the stain evenly.

The right stain — transparent, semi-transparent, or solid — worked into the grain for even absorption, with re-coat timing explained for Sacramento sun.