Soft Wash House Washing That Cleans Without Damage
Mold, algae, mildew, and green staining build up on every home in Missouri. Humidity, shade, and seasonal weather cycles make it unavoidable. The problem is that high-pressure washing -- the method most companies use -- can crack siding, strip paint, force water behind walls, and void manufacturer warranties.
Our house washing uses a soft wash process instead. Low-pressure water combined with professional-grade cleaning solutions breaks down mold and algae at the root, then rinses it away cleanly. Siding, brick, stone, stucco, and painted surfaces are all cleaned thoroughly without risking pressure damage. Every house wash is backed by our 18-month no-mold guarantee—if mold returns during that period, we return to re-treat at no cost.
- Low-pressure soft washing safe for all exterior materials
- Kills mold, algae, and mildew at the root, not just on the surface
- Safe for vinyl, brick, stone, stucco, and painted surfaces
- 18-month no-mold guarantee included on every house wash
What We Clean During a House Wash
Vinyl is the most common siding material in the area and one of the most prone to mold and algae staining, especially on shaded or north-facing walls. Our soft wash removes all discoloration and restores the original color without warping, cracking, or fading the material.
Brick and stone collect mold, efflorescence, and environmental staining that dulls their appearance over time. We clean these surfaces with solutions and pressure levels matched to masonry, protecting mortar joints and surface texture throughout the process.
Stucco and painted exteriors are easily damaged by high-pressure washing. Our soft wash process cleans these finishes safely, removing mold and staining without chipping paint, gouging stucco, or leaving pressure marks.
These areas collect cobwebs, dirt, mold, and wasp nests that are easy to overlook. We include soffits, fascia, and trim in every house wash so the entire exterior looks consistent when we are done.
Need your driveway or patio cleaned too? Our pressure washing services cover all concrete and hard surface cleaning.
Why Our House Washing Approach Is Different
The 18-Month No-Mold Guarantee
Most house washing companies spray down your siding and leave. The mold comes back in a few months because it was only cleaned on the surface, not killed at the root. Our soft wash process uses professional solutions that penetrate organic growth and eliminate it completely. The cleaning lasts longer because the source of the problem is addressed, not just the appearance.
We back that with a written 18-month no-mold guarantee. If mold, algae, or mildew returns to any area we treated within 18 months of your house wash, we come back and re-treat it at no charge. No fine print. No conditions. We stand behind the work.
Protecting Homes Across Missouri for Over 20 Years
Results were exactly what they promised
"We were nervous about house washing because of past damage from another company. Castellan explained everything clearly, and the results were precisely what they promised."
- Kyle J.
Structured. Controlled. Proven.
Our House Washing Process Is Designed for Consistent Protection
Begin With a House Washing Evaluation
Call or fill out our online form with details about your home's size and exterior materials. We provide a clear quote with no hidden fees.
We Prep and Protect
Before washing, our crew pre-soaks all landscaping and covers anything that needs protection. We review the exterior and confirm the plan before starting.
Your Home Looks Like New
We apply the soft wash solution, allow proper dwell time for it to break down mold and algae, then rinse everything thoroughly. The result is a clean, bright exterior protected by our 18-month guarantee.
FAQ: House Washing
House Washing Services Available In Your Area
We provide professional exterior cleaning services throughout St. Charles County and West St. Louis County, including: Ballwin, Chesterfield, Creve Coeur, Kirkwood, Lake St. Louis, Maryland Heights, O'Fallon, St. Charles, St. Peters, Town and Country, Weldon Spring, Wentzville, Webster Groves, MO, and the surrounding areas.
