Clean it before you stain it — not after.

We get called out to a lot of decks where the stain is peeling, patchy or just never looked right after it went on, and almost every single time the cause is the same: the deck was stained over dirt, mildew or old sealer instead of bare, clean wood. Staining doesn't bond to grime — it bonds to the wood fiber underneath it, and if that fiber is covered in a film the stain never actually touched the surface it needed to.

What's actually sitting on your deck

Gulf Coast decks accumulate three layers over a season: a gray, UV-damaged layer on the wood surface itself; mildew and algae living in the humidity trapped between boards; and, on older decks, the remnants of a previous stain or sealer that's broken down unevenly. All three block adhesion, and all three need to come off before anything new goes on.

Years of gray and green lifted off wood and vinyl — stain-ready.

Why pressure alone isn't the answer here either

Wood decking is softer than it looks, and too much pressure — or the wrong nozzle, or holding the wand too close — gouges the surface, raises the grain unevenly, and leaves a deck that actually looks worse once it's dry and takes stain unevenly as a result. We use a wood-specific cleaning solution to lift the gray layer and kill mildew first, then rinse at a controlled pressure that cleans without digging into the grain. Composite decking is a different material entirely and needs its own approach — too much pressure can scuff or streak composite boards permanently, since you can't sand a composite deck the way you can wood.

The right order, start to finish

• Clean the deck — lift dirt, mildew, algae and the old gray UV layer
• Let it dry fully — usually 24–48 hours depending on humidity and shade
• Light sanding if the grain raised during cleaning (wood decks only)
• Stain or seal on a dry deck, ideally with low humidity and no rain forecast for 24 hours

How often a deck actually needs it

A stained or sealed deck usually needs re-cleaning and a fresh coat every 18 months to 2 years on the Gulf Coast — sooner if it's heavily shaded or gets direct salt spray. An unstained, bare wood deck left to gray naturally can still benefit from an annual clean just to keep mildew from working its way into the grain permanently.

Don't skip the cleaning step to save time

We understand the instinct to just get the stain on and be done with it, but a stain job on a dirty deck typically fails within a single season — peeling, blotching or wearing unevenly — which ends up costing more in redo labor and materials than doing the cleaning step properly the first time. If you've got a deck that's due for a refresh, we handle the cleaning and can point you toward who we trust locally for the staining itself.