Pressure Washing – Pittsburg, CA

Pittsburg homes range from mid-century tract stucco in residential neighborhoods to older Victorian wood siding closer to downtown and the marina. We wash all wall surfaces, concrete driveways and walkways, wood decks, patios, and fence panels ahead of staining. Marina-adjacent properties with salt air exposure tend to show heavier mildew accumulation on all elevations — not just north-facing walls. Driveways and concrete flatwork on older lots often have oil staining or embedded grime that needs dwell time before it lifts.

Older Victorian wood siding and all painted stucco get soft-wash: sub-500 PSI with sodium hypochlorite and surfactant. For salt-air mildew on marina-adjacent homes, we may use a slightly higher SH concentration and allow longer dwell to penetrate salt-bonded deposits. Concrete driveways, patios, and any unpainted masonry get pressure-wash at 1,500–3,000 PSI with a rotary surface cleaner. Older Victorian wood is the substrate we're most careful with in Pittsburg — direct high pressure on dry, aged wood can split boards and strip paint that's already under stress from salt cycling.

Property walk first: we note substrate type — stucco vs older wood — check for any loose siding boards, cracked caulk, or open window glazing on older Victorians. Windows and exterior lights get masked. Landscaping gets a pre-rinse. Top-down soft-wash on all wall surfaces, with extra dwell time on mildew-loaded elevations. On older Victorian homes, we work section by section to keep chemistry contact time controlled. Concrete gets rotary surface cleaner, then hand-wanding at edges and steps. Plants rinse after chemical contact. Final walk on all faces.

Spring (March through May) is the main window, clearing winter mildew before summer heat. Fall (September through October) for pre-paint prep. For marina-adjacent homes with heavy mildew, a wash every 12–18 months is realistic given salt air conditions. For any exterior painting project, the wash happens one to two days before the crew starts. Delta wind and summer heat are both factors — we avoid afternoon SH application in peak summer to keep chemistry effective.

Substrate mix: older Victorian wood siding takes more time to wash safely than newer stucco. Marina proximity and resulting mildew load — heavier accumulation means longer dwell time. Total concrete footprint — driveways and patios on older lots vary significantly. Two-story Victorian homes with ornate trim require more careful hand-wanding around detail work. Oil-stained concrete on older driveways may need a degreaser pre-treatment. Number of fence panels for stain prep.

Washed an older Victorian on Railroad Avenue — soft-wash on all wood siding with extended dwell time for salt-air mildew, concrete driveway surface clean. Cleaned a 1960s stucco home near the marina, removing heavy mildew from all four elevations ahead of exterior repaint.