Comparison of a wooden deck before and after cleaning. The left side shows a weathered, dirty, and stained surface with greenish moss; the right side shows the same deck cleaned, with a smooth, polished, and wood-colored finish. There is a black chair partially visible at the bottom left corner, and a white house with siding and window is visible on the left side in both images, with trees in the background.

Professional Deck Cleaning & Restoration by Crosswater Exterior Cleaning LLC

An outdoor deck should be your favorite place to relax, not a slippery, gray eyesore. Over time, moisture, UV rays, and organic spores destroy the beauty of natural wood and composite materials. Our specialized soft washing system lifts away gray, weathered wood fibers, green algae, and deeply embedded mold, restoring your deck’s rich, natural look without splintering the wood.

The Crosswater Method: Safe Soft Wash Restoration

Crosswater Exterior Cleaning LLC utilizes a dedicated, multi-step soft wash system tailored specifically to the delicate nature of softwoods and hardwoods alike.

  1. Pre-Treatment Detergent Application: We apply a specialized, low-pressure wood cleaner that breaks the bond of old failing sealers, melts away gray weathered fibers, and kills mold at the roots.

  2. Ultra-Low Pressure Rinse: We use custom wide-fan nozzles at a very low pressure—equivalent to a heavy rain shower—to gently sweep away the loosened organic matter without tearing the wood grain.

  3. Wood Brightening Treatment: We always finish with a professional wood neutralizer/brightener. This vital chemical step lowers the pH of the wood, opens up the pores, and instantly changes the wood back to its original bright, warm, golden hue.

  • Slippery Green Slime: Green algae and mold feed on moisture within the wood grain, turning your deck surface into a slick, dangerous fall hazard when wet.

  • Sun Weathering: UV rays break down the natural lignin holding wood fibers together, turning beautiful cedar or pine into a dull, splintered gray color.

  • Rot and Structural Failure: Trapped organic matter between the deck boards holds moisture against the joists, rotting the wood structure and causing dangerous board warping or structural collapses.

  • Permanent Cupping: When wood fibers absorb moisture unevenly, the boards cup, warp, and pop screws, ruining your expensive investment.

Pressure-Treated Pine & Cedar

  • The Target: Gray sun weathering, deep black mold, and green algae.

  • The Result: Completely restored natural wood tones, ready for immediate staining or sealing.

Exotic Hardwoods (Ipe, Tigerwood, Mahogany)

  • The Target: Heavy silvering, rain spotting, and environmental grime.

  • The Result: Deep, rich wood grain density restored with specialized low-pressure care

    Composite Decking (Trex, TimberTech)

  • The Target: Stubborn black mold spots and slippery films trapped in the faux-wood textures.

  • The Result: Thoroughly sanitized textures that keep your modern composite deck look pristine and high-traction.