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Deck & Patio Cleaning

Your deck and patio are meant to be used, not avoided because they look weathered or dirty. We clean outdoor living surfaces with methods matched to the material, helping bring back a cleaner, cared-for appearance.

Clean composite deck and paver patio
Before: composite deck and stairs
After: composite deck and stairs cleaned

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The space you built to enjoy shouldn’t be the one you avoid.

Decks and patios live outside year-round. Sun, rain, shade, falling leaves, pollen, moisture, and everyday use all leave their mark.

Wood can gray and collect organic growth. Composite surfaces develop grime and staining. Pavers and patio surfaces can accumulate moss, algae, dirt, and buildup across both the surface and joints.

The challenge is that these materials aren’t interchangeable. Wood, composite decking, concrete, stone, and pavers may all require different pressure levels, chemistry, and cleaning techniques.

We start with the material and condition first, then build the cleaning approach around the surface.

What we address

What weathers your deck and patio.

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Weathered surfaces that have lost some of their fresh, cared-for appearance through regular exposure.

Algae & Organic Growth

Green or dark buildup that commonly develops in shaded or moisture-prone areas and can leave walking surfaces slick when wet.

Mildew & Moss

Organic growth that settles into textured surfaces, wood grain, and patio joints.

Dirt, Pollen & Exterior Grime

Everyday environmental buildup that dulls wood, composite, pavers, and other outdoor materials.

“Our deck looks like new. Keystone did a great job.”
— Jaimee R.

Method

The material determines the method.

Wood, composite decking, pavers, and other outdoor surfaces don’t respond the same way to cleaning.

We evaluate the material and condition first, then select the appropriate chemistry, dwell time, pressure, and equipment for the job. More delicate surfaces may call for lower-pressure or soft-washing techniques, while durable hardscapes may support a different process.

The goal is to remove the buildup effectively while minimizing unnecessary wear to the surface.

We also take care around furniture, planters, landscaping, and the surrounding property as part of the cleaning process.

Paver patio after re-sanding

Paver re-sanding & sealing

Finish the project after the clean.

For paver patios and other appropriate hardscapes, re-sanding and sealing can be added after cleaning. We evaluate the pavers and their condition first, then recommend whether those additional steps make sense for your project.

Often done in the same visit

House WashingRefresh the exterior of the home alongside your outdoor living space.Learn More Concrete & Sidewalk CleaningClean the walkways, driveway, and hardscapes surrounding the deck or patio.Learn More

Deck and patio cleaning questions, answered honestly.

Can pressure washing damage a wood deck?

It can if too much pressure or the wrong technique is used. Wood requires a more controlled approach, which is why we evaluate the boards and condition before selecting the cleaning method.

Can you clean composite decking?

Yes. Composite materials collect dirt, organic growth, and environmental film just like other outdoor surfaces. We tailor the method to the material, finish, and condition.

Do you clean paver patios?

Yes. We clean paver patios and other appropriate hardscape surfaces. Re-sanding and sealing can also be added after cleaning when appropriate for the condition and project.

Should I clean my deck before staining or sealing?

Cleaning is often an important preparation step before refinishing because the surface should be free of dirt, organic buildup, and loose contaminants. If you’re preparing for a specific coating or refinishing project, let us know so we can discuss the condition and timing.

Proudly serving Central Pennsylvania.

Serving York, Harrisburg, Mechanicsburg, Camp Hill, Lancaster, and communities throughout Central and South Central Pennsylvania.

For larger commercial, industrial, restoration, and fleet projects, we're happy to travel beyond our primary service area. Not sure if we cover your location? Just ask.

Service area: York, Harrisburg, Mechanicsburg, Camp Hill, Middletown, New Cumberland, Hanover, Dillsburg, Lancaster, Enola, Lemoyne, Hershey, Carlisle, Colonial ParkYorkHarrisburgMechanicsburgCamp HillMiddletownNew CumberlandHanoverDillsburgLancasterEnolaLemoyneHersheyCarlisleColonial Park

Ready to enjoy your outdoor space again?

Tell us what your deck or patio is made of and what you’re seeing, and we’ll follow up with honest guidance and a clear quote.

Tell us what you're working with.

Share a few details and we'll follow up with honest guidance and a clear quote.

Prefer to talk? Call 717-452-4007

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