Get matched with top deck cleaning pros in Sedona, AZ

Choices include wood, composite, and hardwoods, each with unique benefits.

The average cost to professionally clean or pressure wash a deck is around $150, with prices typically ranging from $100 to $600. Several factors influence the final price, including the deck's size, material, condition, and how long it has been since its last cleaning. For a smaller deck of about 300 square feet, you might pay around $100. For a larger deck of 1,000 square feet or more, the cost could be closer to $300 to $400. Decks that are very dirty or haven't been cleaned in years may require more time and special detergents, which will increase the price. The deck's material also plays a role. Wood decks often cost more to clean because they require a gentle power washing technique to avoid damage. Composite decks are typically less expensive to clean, and cleaning a metal deck may cost around $100.

Staining and sealing the underside of a deck creates a moisture barrier but traps water in the boards, quickly leading to rot. No matter how well you seal the above deck, water still gets through via nails and screw heads on the surface. Allow this water to flow naturally under the deck, where it is routed through the drainage system.

When staining a deck, don’t skip surface prep, avoid staining damp or dirty boards, and don’t apply stain in extreme heat, cold, or wet conditions. Never overload the wood with a stain, as too much can cause tackiness or peeling. Also, don’t forget to test a small area first to ensure the color and finish look right.