What Is House Washing and What Does It Remove?
"House washing" sounds simple, spray the house, done. But done right, it's a specific service with a specific method, and it does a lot more for your home than just make it look nice. Here's what house washing actually is, what it removes, and how it's done safely.
What house washing actually is
House washing is the cleaning of your home's exterior walls and surfaces, stucco, siding, trim, eaves, and more, to remove the buildup that collects on them over time. The key detail: a proper house wash is done with soft washing, not high pressure. Your walls are delicate, and blasting them can crack stucco, strip paint, and force water behind the siding.
Instead, house washing uses low pressure combined with professional cleaning solutions that do the work chemically, lifting grime and killing organic growth without harming the surface underneath.
What house washing removes
A lot more builds up on your walls than most people realize:
- Mold, mildew, and algae, the green and black growth that thrives on shaded, damp walls
- Dirt and pollution film from traffic, dust, and everyday air
- Pollen, which coats surfaces heavily in the San Gabriel Valley each spring
- Cobwebs, insect nests, and wasp activity tucked under eaves and around trim
- Hard-water stains and sprinkler overspray along lower walls
Because soft washing kills organic growth at the root rather than just rinsing it, the results last far longer than a quick spray-down.
Why it's worth doing (beyond looks)
A clean exterior is about more than curb appeal. Mold, algae, and mildew hold moisture against your walls, which over time degrades paint and finishes and can work into the surface. Left long enough, that organic growth becomes harder and more expensive to remove. Regular house washing protects your paint, your stucco, and the value of your home.
There's a health angle too: removing mold, mildew, and pollen from the walls near your entryways and windows keeps that growth from making its way indoors.
How we do it at Rexterior
We match the tool to the surface. For house washing, we use a dedicated soft-wash pump and our pressure washer fitted with a soft-wash injector and the correct low-pressure tips, always with professional cleaning solutions. That lets us apply the solution gently, at a pressure closer to a garden hose, so your home gets thoroughly clean without any risk to stucco, paint, or siding.
Ready to see your home's exterior clean again? Request a free quote or call (626) 545-3132. Learn more about our house washing service.
Frequently asked questions
Is house washing the same as pressure washing?
No. Pressure washing uses high pressure for hard surfaces like concrete. House washing is done with soft washing, low pressure plus cleaning solutions, because walls, stucco, and siding can be damaged by high pressure.
How often should I have my house washed?
Once a year is a good baseline for most Pasadena-area homes. Homes with heavy shade, tree cover, or lots of nearby traffic may benefit from twice a year.
Will house washing damage my paint or stucco?
Not when it's done with soft washing. The low pressure and cleaning solutions clean the surface without the force that can crack stucco or strip paint.