Family-Operated Pressure Washing Since 1976

Pressure Washing Company in San Luis Obispo County and Surrounding Areas

A clean exterior changes how a home looks instantly. Pressure washing strips off years of dirt, mildew, chalk, salt buildup, and weathering in a single visit. Trombley Painting Company handles residential pressure washing as a standalone service and as the prep stage of larger painting projects.

We use commercial pressure washers with adjustable PSI sized to the surface (siding, stucco, brick, concrete, decks, fences, and roof underside) so the cleaning is effective without damaging the substrate. Coastal homes get a soft-wash treatment to remove salt and mildew without etching the finish.

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Commercial Equipment, Residential Service

Full-service residential pressure washing

A pressure washing project from Trombley Painting Company is sized to the surface. Wood siding gets a different PSI than stucco. Stucco gets a different PSI than concrete. Concrete gets a different PSI than brick. Using the wrong setting either does not clean the surface or damages it.

We bring commercial equipment with adjustable PSI and the right nozzles for each substrate. Coastal homes get a soft-wash chemical treatment combined with a low-pressure rinse to remove salt and mildew without etching the surface.

The most common standalone service. We pressure wash wood siding, hardboard, fiber cement, and (with care) older vinyl siding. PSI is sized to the substrate. The result is a clean exterior that looks dramatically better immediately and is properly prepared if you are planning a future repaint.

Stucco is the most common exterior in San Luis Obispo County and one of the trickier substrates to pressure wash. Too much PSI breaks the cement and damages the texture. We use the right pressure for stucco specifically and combine with a mildew-removal treatment when needed.

Concrete pressure washing removes oil stains, tire marks, mildew, and embedded dirt. Higher PSI is required for concrete than for siding. Driveways often need a degreaser pre-treatment for oil stains. Walkways and pool decks get the same treatment with attention to surrounding plantings.

Outdoor concrete patios get the same treatment as driveways but with more attention to adjacent landscaping and outdoor furniture. Often combined with patio epoxy coating service if you are upgrading the patio entirely.

Decks need careful pressure washing before staining or painting. Too much PSI damages the wood fibers and creates a fuzzy surface that holds finish poorly. We use the right pressure for deck wood and let the deck dry fully (at least two to three days) before any sanding or finish work.

Windows and frames collect dust, cobwebs, and overspray that show up clearly after the surrounding surfaces are cleaned or painted. As part of a full exterior pressure washing or pre-paint package, we rinse window frames, sills, and glass using low pressure and the right nozzle so water does not get forced behind the frame or past the seal.

Fences accumulate years of dirt, mildew, and weathering. We pressure wash to remove the buildup and prepare the wood for stain or paint. Done as a standalone refresh or as the prep stage of a fence finishing project.

Outdoor furniture, BBQ areas, retaining walls, and other hardscape elements can be pressure washed as part of a larger exterior cleaning project. Sized to the substrate (metal furniture different PSI than stone retaining walls).

Every exterior painting project from Trombley Painting Company starts with a full pressure wash. This is the most important prep step for any paint project. Dirt, mildew, and chalking prevent paint from adhering. Included in every exterior quote at no separate charge.

Coastal homes (Morro Bay, Cambria, Cayucos, Los Osos, Avila Beach) get a soft-wash treatment that combines a mildew-killing chemical solution with low-pressure rinse. Standard high-pressure washing on coastal homes can drive salt deeper into the substrate or damage already-weathered finishes. Soft-wash gets the surface clean without those risks.

Shaded north-facing exteriors and homes near coastal fog accumulate mildew and algae over time. We use a mildew-killing chemical pre-treatment followed by an appropriate-pressure rinse. The treatment kills the spores, so the mildew does not come back as quickly.

How a Full Pressure Washing Project Works

A full pressure washing project from Trombley Painting Company is sized to the substrate and includes any chemical pre-treatment needed (mildew, algae, oil stain).

We protect the surrounding landscaping during the work, walk through with you at the end to verify clean surfaces, and provide a written invoice that matches the quote. The 3-year warranty covers workmanship issues like surface damage.

  • Siding
  • Decks
  • Fences
  • Walkways
  • Shutters
  • Porches
  • Windows

Respected Commercial Pressure Washers

Commercial pressure washing equipment with adjustable PSI from low-pressure soft-wash to high-pressure concrete cleaning. The right equipment matters because the same PSI that effectively cleans concrete will damage wood siding.

Our crew is trained on adjusting equipment to substrate, recognizing surfaces that need chemical pre-treatment, and protecting landscaping during the work.

  • Restaurants
  • Hotels and motels
  • Religious buildings
  • Retail stores
  • Gyms and fitness facilities
  • Apartment buildings and condos
  • Schools
  • Hospitals
  • And more

Pressure Washing Service in San Luis Obispo County Since 1976

Trombley Painting Company has been pressure-washing homes in San Luis Obispo County since 1976. The photo gallery below shows recent before-and-after pressure washing projects across Paso Robles, Templeton, Atascadero, San Luis Obispo, Morro Bay, Cambria, Arroyo Grande, and the surrounding areas. Stucco, wood siding, concrete driveways, decks, and coastal soft-wash treatments.

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Pressure Washing Damages Homes When It Is Done Wrong

Why Choose our Pressure Washing Contractors?

Pressure washing may look simple, but it can damage homes when done wrong. Too much PSI on wood siding splinters the boards. Too much PSI on stucco breaks the texture.

Wrong nozzle on a coastal home drives salt deeper into the substrate. We have been doing this in San Luis Obispo County since 1976, and we know which equipment and approach to use on which surface.

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  • Always On-time
  • Clear, Transparent, Daily Communication
  • Our Painters are Thoroughly Screened
  • Locally Owned and Operated
  • We Only Use High-Quality Products

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Ready To Start Your Next Project?
Ready To Start Your Next Project?
Pressure Washing

You have questions, we have answers

Pressure Washing FAQs

The pressure washing services that hold up best are run by painting companies, not standalone pressure washing operators. Painters know how surfaces need to be prepped for paint, which is the same skill set as proper pressure washing. Trombley Painting Company has been pressure washing San Luis Obispo County homes since 1976 and we treat every job as paint prep, even when it is a standalone clean.

A single surface or small project runs $300 to $700. An average home exterior or multi-surface job runs $700 to $1,500. Whole-property or coastal soft-wash jobs run $1,500 to $3,000. All quotes include pressure washing, chemical pre-treatments where needed, and a walkthrough.

If you are not planning to paint, pressure washing is the cheapest way to dramatically improve curb appeal. A clean exterior often makes the home look 10 to 15 years newer. If you are planning to paint, pressure washing is non-negotiable prep that determines whether the new paint adheres or peels.

Year-round in San Luis Obispo County. Pressure washing is not weather-dependent the way painting is. Spring is the most popular season because homeowners want clean exteriors before summer entertaining. Fall is good for clearing accumulated mildew before winter rains arrive.

Most exterior surfaces, with the right equipment and pressure. Wood siding (low to medium PSI), stucco (medium PSI), concrete (high PSI), brick (medium PSI), decks (low to medium PSI). Vinyl siding can be cleaned but requires extra care. We do not pressure wash roof shingles (the wrong service for that) and we recommend against pressure washing painted surfaces that are flaking, since the wash will accelerate the failure.

Soft-wash combines a mildew and algae killing chemical solution with low-pressure rinse. Coastal homes accumulate salt and mildew that high-pressure washing drives deeper into the substrate or splatters across landscaping. Soft-wash treats the surface chemically and rinses gently. Better for coastal exteriors, especially older homes.

Ready to refresh your home’s appearance?

Contact Your San Luis Obispo County Pressure Washing Team

A free pressure washing estimate from Trombley Painting Company takes about 20 minutes. We walk the property, identify which surfaces need washing, recommend any chemical pre-treatments needed, and follow up within a few business days with a written, fixed-price quote. Call us today at 805-874-6983 or schedule your free estimate.