Stucco House Washing
Stucco is porous and absorbs water, which means it needs a gentler, chemical-first approach — not a pressure washer turned up high.
Why stucco needs a different approach
Stucco soaks up water rather than shedding it like vinyl or metal siding. High pressure can force water behind the stucco layer, causing trapped moisture, cracking, and in older homes damage to the lath underneath. It also blows out aging caulk around windows and trim.
Our process
We apply a soft-wash detergent formulated to break down algae, mildew and dirt on contact, let it dwell long enough to work chemically, then rinse at low pressure. Effective without the pressure-related risk.
Signs your stucco needs washing
Dark streaking under eaves and rooflines, a green or black tint on shaded elevations, and chalky white efflorescence. North-facing walls and anything under tree cover go first.
How often
Annually for most Peninsula homes. Shaded or heavily wooded lots often benefit from a second pass mid-year.
Frequently asked
Will pressure washing crack my stucco?
It can — high pressure can open hairline cracks and force water behind the surface. That's exactly why we soft wash instead.
Is soft washing safe for painted stucco?
Yes. Lower pressure and pH-appropriate detergents are safe on painted and unpainted stucco alike.
Other house washing surfaces
Where we work
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