Concrete & Pavers
Driveways & Walkways, Clean Again
Concrete, pavers and stone brought back with the moss, dirt and stains gone, and the curb appeal back.
First thing people see, cleaned
Your driveway and front walkway are the first things guests and buyers notice, and in Merrimack and across Southern NH our freeze-thaw winters leave concrete, pavers and stone streaked with moss, algae, dirt and road salt. ACME brings those hard surfaces back to life, lifting years of buildup so the whole property looks cared for again. Family-run since 1988, we treat every driveway, walk, step and patio with the surface-matched method it actually needs.
Concrete, brick and natural stone each respond differently, so we match gentle soft-wash cleaning or controlled, surface-safe pressure to what is in front of us. That lifts grime and organic growth while keeping the concrete sound and the sand in your paver joints where it belongs. Pairing driveway work with our house pressure washing gives the entire exterior one consistent, refreshed look.

“From the start with a clear estimate covering and detailing all aspects of the job, to the actual power washing by Eric C & Larry B, Acme did an excellent job. Very professional, attentive and knowledgeable. Highly recommended!”
Concrete, pavers, stone and steps
From a poured concrete driveway to a paver front walk and stone steps, we clean the hard surfaces that take the most foot and tire traffic.
- Poured and stamped concrete
- Paver and brick walkways
- Moss, dirt and organic staining
- Front steps and stoops
- Curb-appeal ready

Why ACME
Why homeowners and businesses pick ACME
Controlled pressure
Enough to lift moss and grime, gentle enough to keep concrete sound and paver sand in place.
Instant curb appeal
A clean driveway and walk is the fastest way to make a whole property look cared for.
38 years local
Serving Merrimack and Southern NH since 1988.
Good to know
FREQUENTLY ASKED QUESTIONS ABOUT DRIVEWAY & WALKWAY CLEANING
How much does driveway and walkway cleaning cost in Southern NH?
The cost of professional driveway and walkway cleaning depends on the size of the area, the surface material, the amount of buildup, and whether there are stains that require additional treatment. Concrete, pavers, brick, and natural stone can all require different cleaning methods. ACME Pressure Washing provides free, no-obligation estimates so you know what to expect before any work begi
What types of driveways and walkways can ACME Pressure Washing clean?
We clean many of the most common hard surfaces found around Southern New Hampshire homes, including poured concrete, stamped concrete, concrete pavers, brick walkways, natural stone, front steps, stoops, and other exterior hardscapes. We adjust the cleaning method and pressure to the surface rather than using the same approach everywhere.
Will pressure washing damage my concrete, pavers, or walkway?
When performed correctly, professional pressure washing is a safe and effective way to clean exterior hard surfaces. Too much pressure or improper equipment can damage concrete and pavers, which is why ACME uses controlled, surface-appropriate pressure and cleaning solutions. Our goal is to remove dirt, moss, algae, and staining without unnecessarily damaging the surface.
Can you remove black stains, moss, algae, and mildew from my driveway or walkway?
Yes. These are some of the most common reasons homeowners call us for driveway and walkway cleaning. Moisture, shade, trees, and New Hampshire weather can allow algae, moss, mildew, and organic staining to build up over time. Our cleaning process is designed to break down and remove this buildup and restore a cleaner, brighter appearance.
Can pressure washing remove oil stains from my driveway?
Many surface-level oil and automotive stains can be significantly improved with professional cleaning and pre-treatment. However, older oil stains that have penetrated deeply into porous concrete may not disappear completely. We can evaluate the stain and give you a realistic expectation of the results before cleaning
Can you remove rust stains from concrete and pavers?
For most Southern NH homes, once a year keeps moss, algae and grime from building Many rust stains caused by fertilizer, patio furniture, irrigation, or metal objects can be reduced or removed using specialized treatments. Rust generally requires more than simply applying additional pressure. We evaluate the stain and surface first so we can use an appropriate cleaning method without unnecessarily damaging the concrete, stone, or pavers.up. Shaded or tree-lined driveways that green up faster may benefit from a touch-up between full cleanings.
Will driveway or walkway cleaning remove the sand between my pavers?
We use controlled pressure when cleaning paver surfaces to minimize unnecessary loss of joint sand. The condition and age of the existing sand can affect how much moves during cleaning. If we notice loose or deteriorated joint sand, we can discuss the condition with you and recommend the appropriate next step.
How often should I have my driveway and walkways professionally cleaned?
For many Southern NH homes, professional driveway and walkway cleaning every one to two years is enough to keep exterior surfaces looking clean and well maintained. Properties surrounded by trees or located in damp or shaded areas may develop moss and algae faster and benefit from more frequent cleaning.
Do I need to prepare my driveway or walkway before ACME arrives
We recommend moving vehicles, planters, toys, furniture, and other movable items away from the areas being cleaned. If there are especially stubborn stains or areas of concern, point them out to our team so we can evaluate them before we begin. We take care of the professional cleaning equipment and surface preparation from there.
Can you clean my driveway and walkway at the same time as my house, deck, or patio?
Yes. Combining exterior cleaning services is a convenient way to improve the appearance of your entire property at the same time. Many homeowners schedule driveway and walkway cleaning along with house washing, deck and patio cleaning, or other exterior pressure washing services. Ask ACME Pressure Washing about including multiple areas when requesting your free estimate.
What our customers say
Why Southern NH neighbors call ACME
Free, no-obligation quote
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Send a few details and we will get back to you with a free estimate, usually the same day.
(603) 883-6900