The secret to patio cleaning for flagstone is using the right method, not the most pressure. In Eliot, ME, we match the cleaner and pressure to the surface so it comes out clean without damage. With flagstone, the right approach is low-to-moderate pressure wash.
Method and pressure
Cleaning solution: A stone-appropriate cleaner, tested on a small area first.
What to know about cleaning flagstone
Flagstone covers several stones, including sandstone, slate, bluestone and limestone, and they react differently to pressure and chemicals. Softer sandstone flakes if blasted, and mortar joints need care.
Avoid: High pressure on soft or layered stone, and acids on limestone.
How often: Every 1-2 years.
Signs you need patio cleaning for flagstone
- Green or black growth between pavers or on shaded concrete
- Grease spots near the grill
- Stains from planters, leaves and furniture
- Weeds in the joints
- White chalky haze on pavers or stone
Why it gets dirty
- Shade and damp soil around the patio
- Cooking grease and food spills
- Rust from metal furniture and planters
- Efflorescence (salts) rising out of masonry
Easy upkeep between cleanings
- Move planters now and then so they don't leave rings
- Clean grill grease quickly with dish soap and hot water
- Pull weeds from joints before they spread
- Sweep often so leaves don't stain
Not sure what you're looking at? The free stain identifier and safe pressure guide explain each stain and surface.
Why more pressure isn’t better
- Blowing joint sand out of pavers
- Etching or pitting soft stone like travertine and sandstone
- Acid cleaners on limestone and travertine
- Stripping an existing sealer unevenly
What happens on the day
- Check the patio material and any sealer
- Move furniture and protect nearby plants
- Pre-treat growth, grease and stains
- Clean with the right pressure and tools
- Rinse, re-sand joints if needed, and walk the patio with you
How much does patio cleaning for flagstone cost?
What moves the price:
- Size: square footage of siding, roof or flatwork
- Condition: heavy growth, old stains and peeling finishes take longer
- Access: number of stories, roof pitch, slopes and how close we can park
- Add-ons: sealing, gutter brightening and other services done in the same trip
These are typical U.S. ranges, not a quote. You get an exact price before any work starts. For a quick estimate, try the pressure washing cost calculator.
Other services for flagstone
- Pressure Washing for Flagstone
- Sidewalk & Walkway Cleaning for Flagstone
- Pool Deck Cleaning for Flagstone
Serving Eliot, ME and nearby towns
Freeze-thaw cycles and deicing salt are hard on concrete in Maine. Cleaning it in spring and sealing it before winter reduces how much water and salt soak in, which is what causes surface flaking (spalling).
Besides Eliot (ZIP code 03903), we handle patio cleaning for flagstone in South Eliot (3.3 mi), Dover, NH (4.8 mi), Kittery (5.5 mi) and South Berwick (5.6 mi). Call (555) 010-0000 for a free quote in Eliot.
Patio Cleaning for Flagstone: frequently asked questions
How much does patio cleaning for flagstone cost in Eliot, ME?
Patio Cleaning for Flagstone typically costs $150-$400 for a typical backyard patio, and usually takes 1-2 hours. The exact price depends on the size and condition, and you get it before any work starts. Call (555) 010-0000 for a free quote.
Do you use high pressure for patio cleaning for flagstone?
For flagstone: usually 1,000-2,000 PSI, depending on the stone. What we avoid: high pressure on soft or layered stone, and acids on limestone. The cleaning solution does most of the work, followed by a gentle rinse.
Is patio cleaning for flagstone safe for my plants and pets?
We pre-wet plants and lawns, keep cleaning solutions diluted to what the surface needs, and rinse landscaping again when we finish. Keep pets and children inside until surfaces are rinsed and dry.
How often should I schedule patio cleaning for flagstone?
Every 1-2 years. Shade, nearby trees, humidity and heavy traffic mean more frequent cleaning; sunny, dry spots can go longer. Our free cleaning frequency tool gives a recommendation for your climate.
What if it rains on the day?
Light rain doesn't stop most washing, but heavy rain, high wind, lightning and freezing temperatures do. If the weather isn't right, we reschedule at no charge. Our work is backed by a satisfaction guarantee.