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Roof cleaning costs in Washington typically range from $450 to $1,200 depending on your roof’s size, pitch, material, and how much moss or debris is present. At Johnny Tsunami, our average roof cleaning runs around $700 for standard residential properties. This cost ensures that your roof receives the right treatment, prolonging its life and improving your home’s overall curb appeal.
What affects pricing with,
- Square footage
- Roof complexity and steepness
- Moss buildup severity
- Accessibility (multi-story homes, landscaping)
We offer transparent estimates and bundled pricing if combined with gutter or siding cleaning. Our technicians will walk you through the scope, explain the pricing, and deliver a clear estimate. If you’re in Kitsap County, King County, or surrounding counties, contact us for a custom quote tailored to your property’s unique needs
Moss Removal pricing depends on several key variables:
- Roof condition (severe moss = more labor and chemical application)
- Treatment area (partial or full roof coverage)
- Type of roof (metal, composite, tile — all require different approaches)
- Height, pitch, and overall accessibility
Soft Washing pricing is based on the total surface area cleaned and whether you’re treating siding, driveways, patios, fences, or concrete surfaces. Our process includes a low-pressure application of eco-safe solution, rinse, and optional preventative Moss Control. We’ll inspect your property and help prioritize what services bring the best ROI.
Yes! Johnny Tsunami offers bundled service packages that reduce overall cost and increase convenience. Common bundles include:
- Roof + Gutter Cleaning
- Gutter + Siding Washing
- Whole-home Exterior Clean + Windows + Decks
Bundling different exterior cleaning services saves you money and ensures a more efficient service visit. Our teams coordinate the work across services, saving you time and, hassle, and giving your entire home a refreshed, professional look in one go. Bundle and save while maximizing your property’s appeal.
Absolutely — and in fact, it’s the preferred method. Our biodegradable cleaning solution is designed to kill and remove moss, mold, and mildew without causing harm to your roofing materials, paint, or landscaping. Unlike pressure washing, which can void warranties and strip surfaces, soft washing is gentle and thorough.
Our technicians follow industry best practices, stay OSHA-compliant, and perform a pre-clean walkthrough to ensure everything is protected and prepared.
Eventually, — yes. But our professional moss and algae treatment significantly delays regrowth. Depending on tree coverage, weather exposure, and drainage, most roofs stay clean for 12–18 months.
We recommend an annual maintenance plan for moss prevention, gutter flow control, and touch-up treatments. We also provide guidance on trimming overhanging trees, clearing roof valleys, and keeping surfaces dry to slow moss growth.
Unless your roof has structural issues or widespread shingle failure, cleaning is almost always the better first step. Soft washing removes years of buildup, reveals the true condition underneath, and helps you avoid premature replacement costs.
We’ll inspect and advise you honestly — if it just needs cleaning, we’ll say so. If you need a roofer, we’ll point you to trusted partners.
Spring and fall are ideal:
- Spring = remove winter debris, prep for pollen and growth
- Fall = remove leaves, prep for rain and freezing conditions
We clean year-round, weather permitting. Our team knows how to work safely in wet conditions and can flex around your schedule.
The PNW is a moss paradise:
- Constant rain and cool temps
- Tree shade and minimal sun exposure
- Leaves and needles collecting moisture
Unchecked moss can damage shingles, trap moisture, and lead to leaks. Cleaning it off and applying preventative treatment is the smartest way to protect your roof and gutters from long-term damage.
