Londonderry, New Hampshire
Pressure Washing in Londonderry, NH
House, roof and deck washing for Londonderry, from a Merrimack crew serving Southern NH since 1988.
Your local pressure washing crew in Londonderry
Londonderry sits in Rockingham County between Manchester and Derry, a town long known for its apple orchards along Mammoth Road and Pillsbury Road and its wide mix of older farmhouses and newer subdivisions off Route 102. All those mature trees are part of what makes Londonderry a pleasant place to live, and the shade they cast is also what keeps roofs and north-facing walls damp enough for moss and algae to take hold.
Keeping that growth in check protects your home. Algae and moss hold moisture against a roof over time, and a regular soft-wash keeps shingles and siding lasting the way they should. ACME’s soft-wash treatment clears it at the root and rinses clean, using gentle methods rather than the high pressure that can wear down shingles or push water behind siding. After a long New England winter, spring is a great time to get it done.

“Acme provided an excellent pressure washing service that left my home looking brand new. The team was professional, arrived on time and worked efficiently.”
What ACME cleans in Londonderry
We have been clearing algae streaks, moss and mildew off Southern NH homes for 38 years, and Londonderry’s tree-shaded properties see plenty of all three. Whether it is a roof soft-wash, a full house wash, or a deck brought back before staining, we match the method to the surface.
- House & siding soft-washing
- Roof algae & moss removal
- Decks, patios & walkways
- Commercial buildings & lots
- Fleet, equipment & oil undercoating

What our customers say
What Londonderry homeowners say
Good to know
Londonderry pressure washing questions
Do you serve all of Londonderry?
Yes, from the older farmhouses and orchards along Mammoth Road and Pillsbury Road to the newer subdivisions off Route 102. Londonderry is a short reach from our Merrimack shop.
Why do Londonderry roofs grow so much moss and algae?
All those mature trees keep roofs and north-facing walls shaded and damp, which is exactly what moss and algae need. A regular soft-wash keeps that growth in check so shingles and siding last the way they should.
How much does it cost?
It depends on the home's size and the surfaces you want cleaned. Every Londonderry property gets a free, no-obligation estimate, usually the same day.
Is soft washing safe for my shingles?
Yes. We use low pressure so the granules that protect your shingles stay put, while the cleaning solution clears the algae and moss at the root.
Free, no-obligation quote
Free estimate for your Londonderry property
Send a few details and we'll get back to you, usually the same day.
(603) 883-6900