House Washing (Soft Wash) in Columbia, SC
Gloeocapsa magma — the black and green algae streaks common on Columbia siding, especially shaded north-facing walls under oak and pine canopy — regrows within months if it's blasted off instead of killed. Our house washing is a low-pressure soft wash that strips algae, mildew, and pollen film from vinyl, stone, and stucco without forcing water behind it. Results typically hold 12–18 months, with heavily shaded walls first to regrow. Typical Columbia range — every job is quoted free.
Real Columbia Results
Before & After — Two-Story Vinyl, Lexington, SC
Grey-green algae streaking the full height of a two-story elevation, heaviest under the gutter line — soft washed at low pressure so nothing was driven behind the vinyl, down to the brick return.
Why Choose Us for House Washing
- ✓ Low-pressure soft wash kills Gloeocapsa algae and mildew at the root instead of blasting it off the siding
- ✓ Safe for vinyl, fiber-cement, stucco, and painted surfaces — nothing is driven behind the siding or stripped off with it
- ✓ Landscaping saturated before and rinsed again after — nothing sensitive is exposed to concentrated runoff
- ✓ Results typically hold 12–18 months, with a walkthrough inspection before our crew leaves
Pricing
Free Quote
Typical Columbia range: $275–$650
Final pricing depends on size, access, and level of buildup — always quoted free before any work starts.
Request a Quote (803) 717-3217House Washing (Soft Wash) in Columbia, SC
Those black and green streaks running down a Columbia home's north-facing wall usually aren't just dirt — they're Gloeocapsa magma, an algae that spreads fastest on shaded siding under oak and pine canopy, which describes most established Columbia, Lexington, and Irmo neighborhoods. Pressure blasting it off doesn't solve the problem; the algae's root structure survives underneath the vinyl or stucco and regrows within months. House washing here means a soft wash — chemistry applied at roughly garden-hose pressure that kills the algae and mildew at the source, not force that strips it off the top.
If you've searched house washing near me, soft wash house cleaning, exterior house washing, or home pressure washing anywhere in the Midlands, this is the correct service. Pressure washing and house washing aren't interchangeable, and using high pressure on siding is exactly how it gets damaged.
How Soft Washing Works
We apply a biodegradable soft-wash solution at low pressure across the full elevation, working algae, mildew, and pollen film off vinyl, fiber-cement, stone, and stucco without forcing water up behind the siding panels or into the seams. Before we start, we saturate every bed, shrub, and lawn edge in the work zone with fresh water, and we rinse everything again once we're finished — a step that takes a few extra minutes but keeps landscaping fully protected from runoff. See our full guide to cleaning vinyl siding without a pressure washer for the method in more detail.
What's Growing on Columbia Siding
Three things show up on Columbia exteriors more than almost anywhere else in the country: Gloeocapsa algae streaking north-facing and shaded elevations, mildew building up under gutters and behind downspouts where moisture sits the longest, and a fine yellow-green pollen film every spring between the oak and pine bloom. Homes tucked under heavy tree canopy or close to Lake Murray, Lake Katharine, or the river corridors regrow algae faster than open, sun-exposed homes, because the surface stays damp longer.
How Long Does House Washing Last?
A proper soft wash typically holds up 12–18 months before regrowth becomes visible again. Heavily shaded north-facing walls are always first to show it, and anything within sight of open water regrows faster than the same wall a mile inland. We'll give you an honest read on your specific home and canopy cover rather than a generic number.
Our Clean-Again Guarantee
If you can still see it after we leave, we come back and clean it again. If that still isn't right, you get your money back. Before we start any house washing job, we saturate every bed, shrub, and lawn edge in the work zone with fresh water, and we rinse everything again once we're finished.
You pay the number we quoted, never one you're reading for the first time on the invoice.
Prefer to talk? Same-day answers — open 7 days, 7am–8pm.
(803) 717-3217Frequently Asked Questions
How is house washing different from pressure washing?
House washing is a soft wash — a cleaning solution applied at roughly garden-hose pressure that kills algae and mildew at the root. Pressure washing uses force and is reserved for hard flatwork like concrete, because high pressure on siding can drive water behind panels and strip paint.
Will soft washing damage my siding or force water behind it?
No — that's exactly what soft washing is built to avoid. Low pressure means nothing gets forced behind the vinyl or into the seams, down to the brick return, unlike a high-pressure blast.
How long do house washing results last in Columbia?
Most homes hold up 12–18 months before algae becomes visible again. Heavily shaded north-facing walls and homes near open water regrow faster than sun-exposed elevations a mile inland.
How much does house washing cost?
Typical Columbia-area house washing runs about $275–$650, depending on home size, stories, and how much algae or mildew coverage there is. Quotes are always free.
Will you protect my landscaping during the wash?
Yes. We saturate every bed, shrub, and lawn edge in the work zone with fresh water before we start and rinse everything again once we finish, so runoff is diluted to a harmless level.
Related Services
Often Booked With House Washing
Bundling exterior services in the same visit is the easiest way to keep the combined cost down.
Areas We Serve
House Washing Across the Midlands
House Washing (Soft Wash) throughout Richland and Lexington counties. Choose your city for local details and a free quote.
Ready to Book House Washing?
It's Not Pressure. It's Precision.
Serving Columbia, Lexington, Irmo, West Columbia, Cayce, Forest Acres, Chapin, Blythewood, and the rest of the SC Midlands. Open 7 days a week, 7am–8pm.