Why wood turns gray
Sun breaks down the surface of untreated wood, and dirt and mildew settle into the weathered fibers. In LA, strong sun and sprinkler spray speed the process. The result is a silver-gray layer over wood that is often still healthy.
When cleaning is enough
If boards are solid, posts are firm and the gray is only on the surface, a careful low-pressure clean usually brings back much of the original color. It is the cheapest way to make a fence look newer.
The mistake to avoid
High pressure tears wood fibers and leaves a fuzzy, splintery surface that looks worse and takes stain unevenly. Wood needs low pressure, the right distance and the right cleaner.
When to stain after cleaning
If you want the color to last, clean first and let the wood dry fully before staining. Staining over dirt or mildew locks the problem in.
When to replace instead
Rot at the base of posts, boards that crumble when pressed, or a fence that leans are structural problems. Cleaning will not fix those. Replace the damaged sections first, then clean the rest so it matches.
What fence cleaning costs
Our calculator prices fence cleaning at $2.15 per linear foot as of October 2026, with a $195 minimum per visit. You can price it online before deciding on staining or replacement.
Key points
When cleaning is enough
If boards are solid, posts are firm and the gray is only on the surface, a careful low-pressure clean usually brings back much of the original color. It is the cheapest way to make a fence look newer.
The mistake to avoid
High pressure tears wood fibers and leaves a fuzzy, splintery surface that looks worse and takes stain unevenly. Wood needs low pressure, the right distance and the right cleaner.