in Washington, PA & Washington County
Washington County properties take a beating — hard winters, humid summers, and clay-heavy soil that splashes onto driveways and siding every time it rains. Oasis Power Washing serves Washington, Canonsburg, Peters Township, Cecil Township, and communities throughout Washington County with professional exterior cleaning that actually shows results. We bring commercial-grade equipment to every job, treat every surface correctly, and don’t leave until the work meets your expectations.
Call us for a free quote: (412) 404-3400
Our Process
What to expect on the day of your service:
- Free Assessment: We walk the property, identify all surfaces, and confirm the correct method before any equipment is brought out.
- Pre-Treatment: Stubborn stains, algae, and oil spots receive a targeted pre-treatment to break down buildup before the main wash.
- Surface Cleaning: We work methodically across the surface, using professional-grade equipment and maintaining consistent pressure and overlap for an even finish.
- Detail Rinse: Edges, joints, and corners get a final pass to eliminate streaking and debris in tight areas.
- Final Walkthrough: We inspect the finished work with you. If anything isn’t right, we fix it before we leave.
Why Washington County Properties Need Regular Exterior Cleaning
Washington County’s climate creates the perfect conditions for exterior buildup. Late summer humidity drives algae and mold growth on north-facing siding. Spring runoff carries road film and organics onto driveways and concrete. By the time you notice dark streaking or green patches, the growth has usually been established for months.
Why Washington County Homeowners & Businesses Choose Oasis Power Washing
- Locally owned and operated — based in Waynesburg, serving Washington County since 2021
- Insured and experienced — hundreds of completed residential and commercial jobs
- Right method for every surface — we don’t high-pressure everything
- Eco-responsible cleaning solutions — safe for landscaping and pets
- No surprise pricing — free written quotes before any work begins
- Satisfaction guaranteed — we don’t leave until the job meets your expectations
Pressure Washing & Exterior Cleaning Services in Washington County
Oasis Power Washing provides residential and commercial exterior cleaning throughout Washington County. Our most requested services include:
Driveway & Concrete Cleaning
Concrete driveways, sidewalks, and parking pads in Washington County accumulate oil stains, tire marks, and embedded organic matter that standard cleaning can’t remove. We use commercial surface cleaners and high-pressure wands to restore concrete to a like-new appearance. Most residential driveways take 60–90 minutes.
House Washing
We soft-wash vinyl, brick, and painted siding using low-pressure water and professional-grade cleaning solutions that kill algae and mold at the root, rather than just blasting them off the surface. The result lasts significantly longer than a standard pressure wash and won’t damage siding or strip paint.
Roof Cleaning
Black streaks on roofing shingles are caused by a cyanobacterium called Gloeocapsa magma, and they’re extremely common on homes in Washington County. We soft-wash asphalt shingle roofs using the ARMA-recommended method — no high-pressure washing that would void your shingle warranty.
Deck & Patio Washing
Wood decks, composite decking, and stone patios develop mold and algae that make surfaces slippery and accelerate material breakdown. We adjust technique based on your deck material to deliver a thorough clean without raising wood grain or causing surface damage.
Commercial Exterior Cleaning
We serve restaurants, retail storefronts, gas stations, apartment complexes, HOAs, and commercial property managers throughout Washington County. Commercial jobs are quoted by square footage, with flexible scheduling to accommodate your business hours.
Note: For house siding, roofs, and wood surfaces, we use soft washing rather than high pressure. See our House Washing and Roof Cleaning pages for details on how those services work.
Our Service Area in Washington County
Oasis Power Washing provides exterior cleaning throughout Washington County, PA and the surrounding region, including:
- Washington, PA (city and surrounding townships)
- Canonsburg and Cecil Township
- Peters Township and McMurray — see our South Hills service page for details on that area
- Chartiers Township and North Strabane Township
- Burgettstown and Avella areas
- Greene County and Southwestern PA (our home base)
Not sure if we cover your area? Call (412) 404-3400 — we’re happy to confirm and give you a quote over the phone.
Ready For A Clean Property in Washington County?
Frequently Asked Questions
Find answers to most commonly questions about our pressure washing in Washington, PA.
Pricing depends on surface type and square footage. A standard residential driveway typically runs $150–$250. A full package — driveway, walkways, and patio — is generally $250–$450. House washing is quoted by footage of the structure. Commercial jobs are quoted by square footage. We always provide a free written quote before starting — no surprises.
Yes. We serve Washington City, Canonsburg, Cecil Township, Peters Township, McMurray, North Strabane, Chartiers Township, and surrounding areas throughout Washington County. For Peters Township and the South Hills corridor specifically, see our South Hills service page.
Most Washington County homeowners benefit from annual exterior cleaning — typically spring after winter road salt and runoff, or fall before winter sets in. Properties with heavy tree cover, north-facing surfaces, or near agricultural land may benefit from more frequent service.
Yes. We pre-wet surrounding plant beds before cleaning and rinse them after to dilute any overspray. Our cleaning solutions are biodegradable and safe for plants and pets once rinsed.
Yes. We serve restaurants, gas stations, retail properties, apartment complexes, and property managers throughout Washington County. We offer early-morning and weekend scheduling to work around your business hours.
Yes. We soft-wash asphalt shingle roofs to remove black streaks (Gloeocapsa magma) and moss using the method recommended by the Asphalt Roofing Manufacturers Association—no high-pressure washing that would void your warranty. See our Roof Cleaning page for details.