Soft Washing That
Transforms
The Look of Your Siding
Restore your home’s original beauty with our safe, low-pressure soft wash system that eliminates organic growth without the risk of high-pressure damage. Our specialized process doesn't just rinse away surface dirt; it sanitizes your siding by killing algae, mold, and mildew at the root to ensure a longer-lasting clean and a superior, "just-painted" glow.
Professional Soft Washing:
Serving All of King County.
Does your siding look more "green" than it used to? In King County, algae and mildew don't just sit on the surface; they take root in your home’s exterior. Our Soft Wash system doesn't just blast away surface grime; it treats the root cause, sanitizing your siding and restoring that "just-painted" glow. By eliminating organic growth at the source, we ensure a longer-lasting clean that protects your home’s value. Don't just wash your home, renew it.
Siding Integrity: Why High-Pressure "Budget" Washes
Risk Structural Damage Paragraph
Over time, consistent UV exposure and Pacific Northwest weather cycles make vinyl siding increasingly brittle; using standard pressure washing on these surfaces often results in costly cracks and fractures. Similarly, while HardiePlank® is a superior material for our climate, high-pressure wands can easily chip the paint and permanently “scar” the board’s texture. Beyond surface damage, uncontrolled pressure can force water behind siding panels and into wall cavities, leading to hidden wood rot and long-term structural decay.
Our team’s experience allows us to treat these surfaces safely. We utilize a completely closed system, meaning no chemical mixing occurs on your property. Everything is managed through onboard proportioning systems and remotes that precisely deliver treatments exactly where needed and nowhere else. This is where soft washing wins: a low-pressure process that is as gentle as a garden hose, yet as effective as a deep scrub. By combining eco-friendly detergents with high-flow technology, we use water as a “broom” to safely flush away years of organic growth and grime, all while protecting your landscaping and restoring your home’s appearance.
At Priority Washing Services, we’ve perfected a low-pressure Soft Wash process specifically for the heavy organic growth found in King County. This specialized approach sanitizes your home's exterior at the source, killing algae and mildew rather than just blasting the surface. This ensures your property is thoroughly cleaned and sanitized without the risk of structural damage or water intrusion behind your siding.
Soft Washing: Our Professional 7-Step Process
1. Structural Integrity Audit
We perform a walk-through to identify loose siding, failing seals, or oxidation. We only proceed once we’ve confirmed the safest approach for your specific home exterior.
2. Safety & Landscape Protection
We begin by pre-soaking your plants, flowers, and lawn with fresh water. We also cover sensitive electronics (like doorbells and outlets) to ensure your property is fully protected before we start.
3. Specialized Detergent Application
We apply a professional-grade, biodegradable algaecide to your siding. This solution breaks down the molecular bond of algae, mold, and spider webs without the need for high pressure.
4. Dwell & Sanitize
We allow the solution to "dwell," ensuring it penetrates the pores of your siding to kill the microscopic spores that cause regrowth. This is what keeps your home cleaner for longer.
5. Low-Pressure Precision Rinse
Using a high-volume, low-pressure rinse, we clear away the treated grime and organic growth. We use a pressure lower than 300 PSI—safe for vinyl, cedar, HardiePlank, and brick.
6. Detail Surface Rinse
We perform a secondary rinse of all window frames, soffits, and trim to ensure no detergent residue remains, leaving a clean, uniform finish across the entire structure.
7. Final Quality Walk-Through & Photo Proof
We perform a final inspection to ensure a zero-trace finish. Like all our services, you’ll receive high-resolution digital photo proof of the completed work.
Based in Issaquah, we understand the specific "micro-climates" of the Eastside. From the heavy shade of Tiger Mountain to the wind-driven rain of Sammamish, we know how to treat the specific types of organic growth that affect our local neighborhoods.
Trusted Local Soft Washing in Your Neighborhood
By Choosing Priority Washing Services, You’ll Experience Professional Home Care
Fully Licensed & Insured
30 Day No Clog Guarantee
Easy Scheduling
+
Recurring Service Packages
Apple Pay Accepted
Client Portal To Manage Appointments and Service Records
Explore All of Our Professional Cleaning Services
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Soft washing uses specialized detergents and sanitizers combined with very low pressure, similar to a garden hose, but with 2x to 3x more water flow (GPM). This allows us to kill and flush organic growth at the root. It is the only safe, manufacturer-recommended way to clean modern siding.
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No. We utilize a pre-soak and post-rinse method. We saturate your plants and lawn with fresh water before and after the application, creating a protective barrier that ensures our detergents only target the organic growth on your home.
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Soft washing has several applications. In the PNW, we primarily focus on organic growth (algae and mold). However, we can treat oxidation as well. If your siding has both oxidation and organic growth, both specific treatments would need to be completed, as there is no "all-in-one" solution for these distinct issues.
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While we can work in light mist, heavy rain causes dilution which reduces the cleaning power of our sanitizers. To ensure you get the high-quality, long-lasting result we promise, we typically schedule soft wash services on days when rain is not in the forecast.
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Due to the high moisture levels in King County, we recommend a professional soft wash every 12 to 24 months. Regular maintenance prevents algae from taking root and permanently staining your siding.
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Soft washing is the gold standard for Vinyl, HardiePlank (Fiber Cement), Stucco, and Brick. Wood and Cedar siding require a specialized restoration process. If you have a wood-sided home, we’d be happy to review our specific wood-care process with you.
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We offer a specialized Gutter Whitening package designed to restore your gutters' shine! While the house wash cleans the exterior face of the gutters, interior gutter clearing is a separate service that can be bundled with a discount.
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Standard house washing removes organic grime and dirt. "Tiger stripes" are usually caused by electrostatic bonding between the metal and pollution. These require a specialized Gutter Brightening service to chemically break that bond and restore the finish.
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No. As long as we have access to a working exterior water spigot and all windows and doors are securely closed, we can complete the service while you are out. We will provide digital photo proof once the job is finished.
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Yes. Once our solutions have been thoroughly rinsed, they are completely safe for your pets, your family, and the environment.
Why Issaquah & Puget Sound Homeowners Choose Priority Washing Services
When you choose Priority Washing Services, you’re working with a licensed, insured local business that understands the unique needs of Pacific Northwest home exteriors. Our professional soft wash equipment and certified technicians allow us to eliminate everything from light surface dust to heavy algae and mildew with unmatched care and efficiency.
We also offer flexible Exterior Maintenance Plans, making it easy to stay ahead of your home maintenance. With us, you’re not just getting a clean house; you’re making a smart investment in your home’s long-term protection and preserving your siding’s lifespan for years to come.