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Keystone Mobile Wash technician pressure washing at a home, with the service van in the driveway

Pressure washing & exterior restoration for Central PA homes & businesses

PRESERVE. PROLONG. PROTECT.

We protect and restore the surfaces you depend on most, with the care, honesty, and craftsmanship your property deserves.

You're not buying pressure washing.
You're protecting what you've worked hard to build.

Most people don't think much about their exterior surfaces until something looks off. A roof streaked with black. Siding dulled by algae. A walkway that's turned slick and unsafe. Concrete that's aged years ahead of its time.

What you're really after isn't a quick spray-down. It's the relief of seeing your property cared for properly. The confidence that it's protected. The pride of a home or building that reflects the work you've put into it.

That's the difference in how we approach every project. We're not here to make a surface look cleaner for a week. We're here to preserve, prolong, and protect the life of the things you depend on most.

Keystone technician on a lift cleaning a brick chimney

Tell us what you're working with.

We'll follow up with honest guidance and a clear quote.

Why Keystone

"I didn't think companies like this still existed."

Anyone can rent a pressure washer. What sets us apart is how we think about the work, and how we treat the people who trust us with their property.

Care over quick cleaning

We don’t just make surfaces look better. We use the right method, chemistry, and pressure for each material to help protect what you’ve invested in.

Surface-specific knowledge

Every material reacts differently. We tailor our approach to your siding, roof, concrete, masonry, or specialty surface, never a one-size-fits-all blast of high pressure.

Honest communication, start to finish

You’ll know what to expect before, during, and after the job. We set realistic expectations, explain our recommendations, and stand behind our work.

Woman-owned and relationship-driven

We’re built on old-school integrity: we do what we say, we show up when we say we will, and we care about your property the way you do.

Learn More About Us

Trusted by homeowners and businesses across Central PA.

How it works

A clear process, from first call to final walkthrough.

Step 1

Evaluate & Understand

We start by understanding your property, your surfaces, and your goals, assessing the condition and identifying the safest, most effective approach.

Step 2

Surface-Specific Plan

We tailor the method, chemistry, equipment, and pressure to your specific surfaces, and we communicate clearly about what to expect.

Step 3

Restore & Protect

Restoration-minded techniques safely remove buildup, staining, and organic growth while protecting the surface itself.

Step 4

Walkthrough & Guidance

We review the completed work with you and offer honest guidance on how to maintain and protect your property going forward.

See the difference for yourself.

The results speak louder than anything we could say. Take a look at what restoration-focused care actually looks like, on homes, businesses, and surfaces across Central PA.

Before: moss and algae across a circular paver walkway
After: the same paver walkway cleaned
Before: siding on a two-story home
After: the same siding after house washing
Before: rear of a school bus with road grime
After: the same school bus washed
Before: stained brick chimney
After: brick chimney during restoration cleaning
See More Transformations

Proudly serving Central Pennsylvania.

We provide residential, commercial, industrial, and fleet exterior care throughout Central PA, including:

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

Questions people ask before they call.

Will pressure washing damage my home or surfaces?

Too much pressure, the wrong chemistry, or improper technique can damage any exterior surface. We match the method to the material, which often means soft washing, surface-specific chemistry, or controlled pressure rather than force alone. Our goal is to clean effectively while preserving the integrity of the surface.

What’s the difference between pressure washing and soft washing?

Pressure washing uses higher pressure where the surface can support it, such as many concrete applications. Soft washing relies on lower pressure and specialized cleaning solutions for more delicate surfaces like siding, stucco, and painted finishes. We choose the approach based on the material and condition.

How often should exterior surfaces be professionally cleaned?

It depends on the surface, moisture, shade, environmental exposure, and surrounding vegetation. Many residential properties benefit from exterior cleaning every one to three years, while commercial and fleet maintenance may be more frequent.

Do you provide estimates and explain the process beforehand?

Yes. We evaluate the property or surface, explain the recommended approach, discuss realistic outcomes, and answer your questions before the work begins so you know what to expect.

Why hire a professional instead of doing it myself?

Exterior cleaning involves more than pressure. The wrong equipment, chemistry, or technique can create unnecessary damage. Professional care combines surface knowledge, appropriate equipment, and restoration-focused methods to clean effectively while helping protect the material underneath.

Ready to protect what you've worked hard to build?

Tell us about your property and what you're looking to restore. We'll bring the care, expertise, and honest guidance to get it done right.

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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