Residential pressure washing & exterior cleaning in Central PA
Your Home. Protected.
Your home is one of the biggest investments you'll ever make. We use surface-specific exterior care to help preserve its materials, prolong their useful life, and protect the property you've worked hard to build.
The care you put into your home should protect it.
Green algae creeping across the siding. Black streaks on the gutters. A walkway that gets slick every time it rains. These problems may show up visually first, but they can also signal buildup that can affect the surfaces underneath.
Organic growth, moisture, environmental residue, and staining can contribute to deterioration over time across siding, concrete, wood, and other exterior surfaces.
We start by understanding the material and condition, then use the method, chemistry, and pressure that make sense for the surface. The result is a home that looks cared for because it is being cared for.
Residential services built around your home.
Additional services that complement your exterior care.
Why Keystone
Your home deserves a careful approach.
The biggest concern homeowners have about exterior cleaning is damage, and that's a fair one. That's why our approach starts with the surface, not the spray. We evaluate the material and condition first, then choose the method, chemistry, and pressure that make sense for your home.
We treat your property like you’re watching
Plants moved carefully, landscaping protected, and everything back in place when we leave. Our customers notice, and mention it constantly.
We explain before we spray
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.
We show up when we say we will
Respected service windows, proactive communication, follow-through. It shouldn’t be rare. We know it is.
We’re honest about what to expect
No overpromising, no upselling you on services your home doesn’t need. If a stain won’t fully come out, we’ll tell you before we start, not after.
“Meg came out and carefully reviewed our home, deck, and problem areas, recommending solutions that fit both our budget and expectations.”— Brian D.
How it works
A clear process, from first call to final walkthrough.
Evaluate & Understand
We assess your home’s surfaces, condition, and your goals.
Surface-Specific Plan
We tailor the method, chemistry, and pressure to your home.
Restore & Protect
Restoration-minded techniques safely remove buildup, staining, and organic growth.
Walkthrough & Guidance
We review the finished work with you and share honest guidance for keeping it protected.
Proudly serving Central Pennsylvania.
We provide residential, commercial, industrial, and fleet exterior care throughout Central PA, including:
- York
- Harrisburg
- Mechanicsburg
- Camp Hill
- Middletown
- New Cumberland
- Hanover
- Dillsburg
- Lancaster
- Enola
- Lemoyne
- Hershey
- Carlisle
- Colonial Park
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.
Common questions from homeowners.
Will pressure washing damage my siding, deck, or other exterior 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 and specialized chemistry rather than high pressure. Our goal is to clean effectively while helping preserve the surface underneath
How often should I have my home professionally cleaned?
Most homes in Central PA benefit from exterior cleaning every one to three years, depending on shade, moisture, and surrounding trees. Homes with heavy tree cover or north-facing walls often need attention more often, because algae and mildew thrive in damp shade.
What's the green stuff growing on my siding?
Usually algae, sometimes accompanied by mildew, mold, or lichen. It’s more than a cosmetic issue. Organic growth and moisture can contribute to surface deterioration over time, which is why routine exterior maintenance is about more than appearance.
Do I need to do anything before you arrive?
A few things. Please make sure we have access to a working exterior water source, close and lock your windows, and remove hanging decorations. Larger furniture should be moved ahead of time. We’re happy to handle smaller plants and lightweight items from there.
Ready to protect the home you’ve worked hard to build?
Tell us what’s going on with your home’s exterior, and we’ll follow up with honest guidance and a clear quote.