Why do Fresno decks weather so fast?
Intense sun and very dry air are hard on wood. Ultraviolet light breaks down the surface fibers and turns wood gray. Dry heat pulls moisture out, which leads to cracks, splits, cupped boards and raised grain. Decks that face south or west take the worst of it, and boards with no shade can get uncomfortably hot underfoot.
Irrigation can add another problem. Sprinklers that soak deck posts or the edge of the boards cause dark stains and rot over time. Winter fog and the occasional storm bring moisture into unsealed wood, and the swing between wet and dry stresses the boards further.
- Gray, faded boards on sun-facing decks
- Cracks and splinters from dry heat
- Stains or rot near sprinklers and post bases
- Peeling film from old, failed finishes

