Pavers, Brick & Stone
Patios & Pavers, Clean and Bright Again
Paver, brick and natural stone patios, steps and stoops brought back with the moss, algae and stains lifted and the joints cleared.
Your outdoor living space, restored
A paver patio, a bluestone terrace and a set of granite steps are where a backyard actually gets used, and here in Merrimack and across Southern NH our shaded, freeze-thaw seasons leave that stone green with algae, dark with mildew and weedy in the joints. ACME lifts that buildup and brings the color back, so the space looks inviting again and is safe underfoot for the people using it.
Brick, concrete and natural stone each take a different touch, so we match a controlled, surface-safe clean to what is in front of us. That clears the grime and organic growth while keeping the pavers sound and the joint sand where it belongs. Pairing patio work with our house washing or a driveway and walkway cleaning gives the whole property one refreshed look.

“Eric and Larry did fantastic job on my home. They took care of treating my roof, house siding, all of my decks and my Pool patio. The treated areas look brand new. I highly recommend Acme Pressure washing”
Pavers, brick, stone and steps
We clean the hardscape surfaces that take the most weather and foot traffic, from a full paver patio to the granite steps at your front door.
- Paver and brick patios
- Natural stone, bluestone and flagstone
- Concrete and stamped-concrete patios
- Granite and stone steps and stoops
- Moss, algae and joint weeds
- Cleaned and ready to seal

Why ACME
WHY HOMEOWNERS AND BUSINESSES PICK ACME
Joint-safe pressure
Enough to lift moss and weeds from the joints, gentle enough to keep the pavers sound and the sand in place.
A backyard you want to use
A clean, bright patio and safe, non-slip steps turn the whole outdoor space back into somewhere you want to sit.
38 years local
Cleaning patios, pavers and stone across Merrimack and Southern NH since 1988.
Good to know
PATIO & PAVER CLEANING FAQS
Is pressure washing safe for pavers, brick, and stone patios?
Yes, when the cleaning method and pressure are matched to the surface. ACME Pressure Washing adjusts the cleaning process for concrete pavers, brick, bluestone, flagstone, granite, natural stone, and other hardscape materials. The goal is to remove dirt, algae, moss, mildew, and buildup without damaging the surface.
How much does patio and paver cleaning cost?
The cost of patio and paver cleaning depends on the size of the area, the type of material, accessibility, and how much dirt, algae, moss, or staining needs to be removed. ACME Pressure Washing provides free estimates so you know the cost before any work begins.
Will pressure washing remove the sand between my pavers?
Some joint sand can loosen during a thorough paver cleaning, especially when the existing sand is old, deteriorated, or already washing out. ACME uses controlled pressure and proper cleaning techniques to minimize unnecessary joint disruption. If the joints need new sand after cleaning, we can discuss the condition of the pavers and the recommended next step.
Can you remove moss, algae, mildew, and weeds from between pavers?
Yes. Professional paver cleaning can remove moss, algae, mildew, surface growth, and many weeds growing between paver joints. Removing this buildup improves the appearance of the patio and can also help reduce slippery surfaces. Ongoing maintenance can help slow its return.
What types of patios and pavers can ACME clean?
ACME Pressure Washing cleans many common patio and hardscape surfaces, including concrete pavers, brick patios, natural stone, bluestone, flagstone, poured concrete, stamped concrete, granite steps, stone walkways, stoops, and other exterior masonry surfaces.
Can you remove stains from my patio or pavers?
Many common stains and discoloration caused by dirt, algae, mildew, leaves, organic buildup, and everyday outdoor use can be significantly reduced or removed. Oil, rust, paint, efflorescence, and deeply embedded stains may require specialized treatment and may not disappear completely. We evaluate the surface before cleaning and use the appropriate method whenever possible.
Do my pavers need to be re-sanded after cleaning?
Not always. It depends on the condition and amount of existing joint sand. Older patios or pavers with deteriorating joints may benefit from fresh sand after cleaning. If we notice significant joint loss or deterioration, we will let you know so you can decide whether re-sanding or polymeric sand should be considered.
Should I seal my pavers after they are professionally cleaned?
Cleaning is an ideal first step before sealing because dirt, algae, moss, and other contaminants should be removed before a sealer is applied. Paver sealing can help protect the surface, stabilize joint sand, reduce staining, and maintain the freshly cleaned appearance longer. We can help you determine whether sealing makes sense for your patio or pavers.
How often should patios and pavers be professionally cleaned?
Most patios and paver surfaces benefit from professional cleaning every one to three years, although shaded or damp areas may require cleaning more frequently. Properties surrounded by trees or areas that receive limited sunlight can develop algae, moss, and organic buildup faste
Do I need to move patio furniture before you clean?
Whenever possible, removing small furniture, planters, decorations, grills, and other movable items helps us clean the entire surface thoroughly. If you have larger or heavier items, let us know when requesting your estimate so we can discuss the best way to prepare the patio before your scheduled cleaning.
What our customers say
Why Southern NH neighbors call ACME
Free, no-obligation quote
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(603) 883-6900