Deck & Fence Washing in Seacoast, NH

Wood and composite cleaned at the right pressure, so it comes out bright instead of fuzzy and gouged.

A deck is one of the easiest things to ruin with a pressure washer. Too much pressure raises the grain, leaves fuzzy splinters, and carves lines into soft wood. Black Diamond cleans decks and fences at the pressure the material can actually take, so they come out bright and smooth.

Matched to the material

Cedar, pressure-treated pine, mahogany, and composite each need a different touch. We use low pressure and the right cleaner to lift the gray weathering, mildew, and algae without tearing up the surface. If you are planning to stain or seal, a proper wash first is what makes the finish actually hold.

More than just the deck boards

Railings, balusters, lattice, stairs, and fence lines all get cleaned, not just the flat walking surface. Vinyl and aluminum fencing clean up beautifully with a soft wash as well.

Careful hands, fully insured

Connor and Gabe do the work themselves and treat your deck like it is worth protecting, because it is. Fully insured, free quotes, usually scheduled the same week.

Why homeowners choose Black Diamond

  • Correct low pressure for wood, so no raised grain or gouging
  • Lifts gray weathering, mildew, and algae
  • Preps wood properly for staining or sealing
  • Cleans railings, lattice, stairs, and fence lines, not just the boards
  • Fully insured, owner-operated, free same-week quotes

Frequently asked questions

Will pressure washing ruin my wood deck?

It can if the pressure is too high. We clean wood at low pressure so it comes out smooth, not fuzzy or gouged.

Should I wash before staining?

Yes. A clean, dry deck is what lets stain and sealer bond and last. Washing first is the difference between a finish that holds and one that peels.

Do you clean composite decking?

Yes. Composite still grows mildew and algae, and a soft wash restores it without damage.

Get your deck ready for the season