A Perfect Shine. Done Right the First Time.

Professional Moss Treatment in Snohomish & King County

Protect your roof from one of the Pacific Northwest's most common and damaging problems. Serving Edmonds, Mukilteo, Lynnwood, Shoreline, Bothell, Kenmore, Mill Creek and surrounding areas for over 26 years.

Starting at $165.

Why Moss Treatment Is So Important in the Pacific Northwest

Moss thrives in the Pacific Northwest. Our cool temperatures, heavy rainfall, and abundance of tree cover create the perfect environment for moss to take hold and spread. It grows on trees, sidewalks, fences, and yes, on roofs. Once airborne moss spores find their way into the shaded, moist gaps between your shingles, they settle in and begin to grow. Within a season or two a small patch can turn into a serious problem.

What seems like a harmless green patch on your roof is actually causing real damage to your home.

Moss covered roof on a Pacific Northwest home in Snohomish and King County

What seems like a harmless green patch on your roof is actually causing real damage to your home.

How Moss Damages Your Roof

Moss is not just an eyesore. It is one of the most destructive problems a roof can have.

Moss holds water on roof shingles icon

Moss holds water against your shingles, causing them to break down and rot faster than they should.

Moss lifting roof shingles icon

It lifts and displaces shingles as it grows, creating gaps where water can get into your roof.

Roof structure damage from moss icon

It damages the supporting structure underneath your roof by allowing constant moisture into the wood framing, eventually leading to decay and risking collapse.

Moss spores health risk icon

It can damage your health when spores are dispersed into the air, especially affecting people with asthma or allergies.

Roof replacement cost from moss damage icon

It forces homeowners into early roof replacement, costing tens of thousands of dollars that could have been avoided with regular treatment.

Our Moss Treatment Approach

Effective moss treatment is not a one-size-fits-all job. The right approach depends on the type of moss, how established it is, the type of roof you have, and the time of year. We have spent over 26 years dialing in our process to give homeowners across Snohomish and King County long-lasting results without damaging the roof in the process.

Every moss treatment we do starts with an on-site evaluation. We look at the severity of the moss, the condition of your shingles, the slope and accessibility of the roof, and any underlying issues that need to be addressed first. Based on that evaluation we recommend the treatment approach best suited to your specific situation.

We use treatments that are proven to kill moss at the root and prevent regrowth for the long term. Unlike a quick scrape-and-go job, our process is designed to protect your roof and keep moss from coming back season after season. We will walk you through exactly what we are doing, why, and what to expect after the treatment is complete.

Roof moss treatment technician using safety harness on a Snohomish and King County home

We use treatments that are proven to kill moss at the root and prevent regrowth for the long term. Unlike a quick scrape-and-go job, our process is designed to protect your roof and keep moss from coming back season after season. We will walk you through exactly what we are doing, why, and what to expect after the treatment is complete.

Why Homeowners in Snohomish & King County Choose A Perfect Shine

There is no shortage of exterior cleaning companies in the greater Seattle area. Here is what sets A Perfect Shine apart.

26 years of window cleaning experience in Snohomish and King County

26+ Years of Experience

We have been doing this since 1999. That kind of experience means we have seen every roof, every gutter, every type of siding, and every tricky job you can throw at us. We know how to handle it.

Licensed and insured window cleaning company in Snohomish County

Licensed & Fully Insured

Every job we do is covered. You never have to worry about liability when A Perfect Shine is on your property.

Local family owned window cleaning company in Snohomish and King County

Local & Family Owned

We are not a franchise or a national chain. We are your neighbors. We live and work in this community and our reputation is built one satisfied customer at a time.

5 star customer satisfaction for window cleaning and exterior cleaning

5 Star Customer Satisfaction

Our work speaks for itself. We have built a loyal customer base across Snohomish and King County through honest work, fair pricing, and results you can see

Free estimates for window cleaning in Snohomish and King County

Free Estimates

Not sure what you need or what it will cost? Call or text us and we will come out and give you a free, no-obligation estimate.

Moss Treatment Pricing

Moss treatment starts at $165 for properties up to 1,500 square feet, with an additional $30 for every 500 square feet beyond that. Free estimates are given on every job.

Other Services A Perfect Shine Provides

We provide more than window cleaning. We also offer Gutter Cleaning, Pressure Washing, House Washing, Roof Cleaning, and Moss Treatment throughout Edmonds, Mukilteo, Lynnwood, Shoreline, Bothell, Kenmore, Mill Creek and surrounding areas.

Window Cleaning

Crystal-clear windows, inside and out. Residential and commercial properties welcome. Starting at $95.00. Free estimates available.

Gutter Cleaning

Clogged gutters cause serious water damage. We remove debris and buildup to keep your gutters flowing and your home protected.

Pressure Washing

We restore the look of driveways, sidewalks, walkways, and patios with professional pressure washing. Starting at $155 minimum, 25 cents per square foot for flat work.

House Washing

Safe, low-pressure soft washing for siding and exterior walls. Pricing is bid on-site to ensure the right approach for your home.

Roof Cleaning

Remove debris, buildup, and organic material from your roof before it causes lasting damage. Starting at $140 minimum.

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