Pressure Washing in Portsmouth, NH

Coastal salt air is hard on a home. We soft wash Portsmouth houses, roofs, and driveways back to clean, safely.

Portsmouth homes live right on the water, and the salt air shows it. Siding greens up on the shaded north side, brick and pavers grow moss in the damp, and roofs streak black faster than they do inland. Black Diamond keeps Portsmouth exteriors clean with soft washing that is safe for historic homes and new builds alike.

Every exterior surface

We handle house washing, roof soft washing, driveway and walkway cleaning, decks and fences, and pool decks and patios across Portsmouth. Whether you are in the South End near the water, up in Atlantic Heights, or in one of the newer developments off Islington, the coastal climate throws the same problems at your siding, and we clean all of it at the right pressure.

Gentle on older homes

Portsmouth has a lot of historic and character homes, and those are exactly the ones a careless high-pressure crew can damage. Our soft wash approach lifts the growth without forcing water behind clapboards or stripping paint.

Local, owner-operated, insured

Connor and Gabe are on the Seacoast and know Portsmouth well. Every job is theirs, start to finish, never subcontracted, fully insured, with free quotes usually scheduled the same week you call.

Neighborhoods and nearby towns we serve

South End, Atlantic Heights, Islington Creek, New Castle, Rye, Greenland

Frequently asked questions

Do you service all of Portsmouth?

Yes, the whole city and the surrounding towns, from the South End and downtown out to New Castle, Rye, and Greenland.

Is soft washing safe for older Portsmouth homes?

Yes. Low pressure and the right detergents clean historic siding without the damage high pressure can cause.

How soon can you come out?

Quotes are free and usually scheduled within the same week you reach out.

Book your free, same-week quote