Siding & House Washing in Sammamish
Many Sammamish homes in Klahanie and Sahalee were built in the 1980s and '90s, on wooded lots in neighborhoods with active HOAs. After a few decades of plateau winters, their siding tends to carry a dull green film, heaviest under the eaves and on the tree side.
Decades of winters have left a film on your siding
Algae and mildew build up slowly, a little more each wet season, so the color shift is easy to miss until a neighbor repaints. Under the eaves and on the tree side, the film traps moisture against siding and trim that have been holding up for decades.
Full-house soft washing, not high-pressure blasting
Starting at $200 We pre-treat with detergent to break down algae and mold, soft wash at low pressure to lift it without forcing water behind panels, then rinse every wall clean and check the shaded, high-buildup spots.
Siding that looks well kept again, without repainting yet
Once the film is lifted off, the original color comes back, so the house holds its own on a street of updated homes and the repaint you were budgeting for can wait until it's really due.
Neglected algae leads to repainting or re-siding, not a wash
Skip a season or two and that colonized siding won't just need washing — paint starts lifting and, on wood siding, rot sets into the boards themselves, turning a wash into a repaint or re-siding job.
Save on your first service — New customers get 10% off.
Save when you bundle — Request multiple services at once. Fewer trips reduce our carbon footprint and lower your bill.
Save when you subscribe — Repeat every 1, 3, 6, or 12 months.
What's included
- Pre-rinse & pre-treat. A gentle detergent breaks down algae and mold before any pressure touches the siding.
- Soft wash. Dirt and growth lift off at low pressure, without forcing water behind panels or trim.
- Full-house rinse. Every wall is rinsed clean, with care around windows, outlets, and landscaping.
- Walk-around inspection. We check the shaded, high-buildup spots — north-facing walls and under eaves — where algae collects most.
Worth knowing
Soft washing is gentle by design, but siding with existing gaps, damaged caulking, or already-peeling paint can let water in or lose more paint than usual. We'll let you know if we spot anything like that before we start.
Frequently Asked Questions
Our HOA expects regular exterior upkeep. Can we set up a recurring wash?
Yes. You can set up a repeating schedule, like once a year, and we'll reach out when it's due.
Will washing show us where the house needs paint?
Often, yes. A clean house makes peeling or faded spots easier to see, and we'll point out anything we notice so you can plan for it.
What's the difference between pressure washing and soft washing my house?
Pressure washing uses high force to blast dirt off hard surfaces like concrete. Siding is more delicate — vinyl, wood, and fiber cement can crack, streak, or let water behind the panels under too much pressure. We soft wash siding instead: lower pressure, a cleaning solution that does the actual work, then a gentle rinse.
Will soft washing damage my paint or siding?
Soft washing is specifically the technique used to avoid that. High-pressure washing is what causes paint stripping and cracked siding — soft washing is the safer approach for painted or older siding.
Other services in Sammamish
- Gutter Cleaning
- Roof Cleaning
- Move-Out Cleaning
- Driveway Pressure Washing
- Patio & Deck Washing
- Fence Washing
- Window Cleaning
Siding & House Washing in other Eastside cities
Siding & House Washing across the Eastside · All services · Our service area