Looking for patio cleaning for flagstone in Berkeley, CA? We look at the surface first, choose the right method and pressure for it, and give you a price before any work starts. On flagstone, the method we use is low-to-moderate pressure wash.
How we clean it
Cleaning solution: A stone-appropriate cleaner, tested on a small area first.
Cleaning flagstone safely
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.
When to book 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
What causes the dirt and stains
- Shade and damp soil around the patio
- Cooking grease and food spills
- Rust from metal furniture and planters
- Efflorescence (salts) rising out of masonry
Safe steps for homeowners
- 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.
What can go wrong with DIY pressure washing
- 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
How we handle patio cleaning for flagstone
- 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 Berkeley, CA and nearby towns
Driveways and patios in California collect oil, dust and tire marks over the long dry season. Cleaning with a surface cleaner and controlling the wash water keeps it out of storm drains.
Some cities in California limit outdoor water use, including washing hard surfaces with a hose, especially during drought declarations. Pressure washers use far less water than an open garden hose, but rules vary, so it's worth checking your city's current restrictions. Wash water should also be kept out of storm drains.
We provide patio cleaning for flagstone across Berkeley (ZIP codes 94701, 94702, 94703, 94704, 94705 and more) and nearby towns including Albany (1.7 mi), Kensington (2.7 mi), Emeryville (2.9 mi) and El Cerrito (3.7 mi). Call (555) 010-0000 for a free quote in Berkeley.
Patio Cleaning for Flagstone: frequently asked questions
How much does patio cleaning for flagstone cost in Berkeley, CA?
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.