Deck & Fence Cleaning

How we approach deck cleaning on Long Island.

Decks are a balance: enough pressure to lift weathered fiber, not enough to chew the wood. We run 1,200–1,800 PSI with a 25-degree tip, move with the grain, and finish with a 2-step oxalic acid brightener that neutralizes the cleaner and restores the natural wood color.

Pressure-treated pine, cedar, mahogany, and composite each get a different recipe. Composite is low-pressure only (0–500 PSI) — we're just rinsing with a mold inhibitor. Cedar is the most forgiving. PTP pine is the most finicky because the latewood soaks up cleaner unevenly.

If you're planning to re-stain, get the deck washed 48 hours before the stainer arrives. We coordinate with most LI deck refinishers.

Our process

1. 1
   Protect

   Tarp siding and landscaping, cover lights.
2. 2
   Cleaner application

   Sodium percarbonate or hypochlorite, 10-min dwell.
3. 3
   Mid-pressure pass

   1,200–1,800 PSI, 25° tip, with the grain.
4. 4
   Brighten

   Oxalic acid restores pH + natural color.
5. 5
   Inspect + photo

   Walk the deck with you before leaving.