Integrity Pro Washers Team
Professional pressure washing and soft washing specialists serving San Diego County.
Last updated: 2026-05-09
How Do You Power Wash a Patio in San Diego?
Patio pressure depends on surface. Concrete patios handle 3,000 to 3,500 PSI with a 25 degree tip. Flagstone wants 1,200 PSI max with a 40 degree tip. Pavers need 1,500 PSI plus joint sand replacement after. We charge $0.20 to $0.45 per square foot across San Diego.
Last updated: May 2026
A patio is not a driveway. We see homeowners online running 4,000 PSI surface cleaners across travertine and wondering why pieces are pitting six months later.
Different stone, different rules.
Concrete Patios
Standard broomed concrete is the easiest patio surface in San Diego. We run a 4,000 PSI machine through a flat surface cleaner at 25 inches per second. A 400 square foot patio takes 35 minutes.
Stamped concrete is different. The sealer wears unevenly and aggressive cleaning will strip what is left. We drop pressure to 2,000 PSI and use a 40 degree tip held 12 inches off the surface. After cleaning we recommend a fresh acrylic sealer within two weeks.
Flagstone and Slate Patios
We see a lot of flagstone in Mission Hills and Kensington. The stone is soft. Hit it with 3,500 PSI and you will see surface erosion the next time it rains.
Our process for flagstone: pre-treat with a sodium hypochlorite mix at 1 percent, dwell 10 minutes, rinse at 1,200 PSI through a 40 degree tip. The chemistry does the work. The water just rinses.
Paver Patios
Pavers are the trickiest. Each cleaning blows out joint sand. If we wash a 500 square foot paver patio in Point Loma, we plan for two hours of polymeric sand replacement after rinsing.
Cost goes up because of the sand. Material runs $40 to $80 for an average residential patio. Labor adds 90 minutes.
Patio Surface Comparison
| Surface | Max PSI | Tip | Cost per sq ft |
|---|---|---|---|
| Broomed concrete | 3,500 | 25 degree | $0.20-$0.30 |
| Stamped concrete | 2,000 | 40 degree | $0.30-$0.45 |
| Flagstone | 1,200 | 40 degree | $0.35-$0.50 |
| Travertine | 1,500 | 40 degree | $0.35-$0.55 |
| Pavers | 1,500 | 25 degree | $0.40-$0.60 (incl sand) |
What Goes Wrong on DIY Patio Jobs
The most common damage we get called to repair is striping on concrete. Someone rented a wand from Home Depot, ran it back and forth at uneven distances, and now the patio looks like a tiger.
A surface cleaner fixes that, but only if the homeowner stops before they etch the aggregate. Once the cement paste is gone and the rocks are exposed, no amount of cleaning brings it back.
The second issue is bleach overspray on plants. We tarp every garden bed within 8 feet of a patio before we mix any cleaning solution. Most DIY jobs skip this step.
San Diego Specific Issues
Salt air on coastal patios in Ocean Beach and Pacific Beach embeds in concrete pores. A regular wash gets the surface clean but does not address the salt. We add a percarbonate pre-soak for coastal patios.
Inland patios in El Cajon and Santee deal more with iron staining from sprinkler overspray. That requires an oxalic acid treatment, not pressure.
Hillside patios in La Mesa and Mission Hills accumulate eucalyptus tannin staining. Tannins lift with sodium hydroxide, not pressure washing alone.
Average Patio Job in San Diego
Most residential patios we wash run 300 to 600 square feet. Total job cost lands at $150 to $300 for a standard concrete patio. Stamped, flagstone, or paver patios run $200 to $450 depending on size and condition.
We finish most patios in under two hours. If your patio has stains older than two years, expect an additional pre-treatment step.
If we cleaned your patio in North Park or Kensington, we would love a Google review mentioning the neighborhood and surface type. It helps other homeowners find us.
Want a quote? See our pressure washing service page or request a free estimate. We respond same day.