Roof Moss Removal In Victoria B.C

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2 year guarantee on our moss removal services

Quality Work, Competitive Pricing

For the third year we are Torch Award Finalists, which emphasizes "ethical and truth-worthy business practices" on Vancouver Island. We're proud to provide Greater Victoria residents professional services at competitive rates.

We Guarantee 2 Years On Our Moss Removal Services

Victoria Moss Removal From $550

We provide custom quotes based on your needs. Our moss removal services start at $550+ and varies depending on the size and difficulty of the job.

Moss Removal Services in the Greater Victoria Area

Moss can be very pleasing in specific settings. However, moss on a roof can have devastating consequences for property owners. Unlike other areas of your property, we can not remove moss on your roof using pressure. As moss grows, it can wedge under your shingles, causing gaps and holes that a pressure washer can exacerbate. Therefore, it is essential to have the knowledge, skill, and experience to use the correct methods and techniques when dealing with organic growth. Coastal Shores employs various practices, such as pressure washing, soft washing and green chemicals treatments. This allows us to remove moss, algae, mildew and mould from almost any surface safely and effectively.

Before/after roof moss removal images from a job done in September 2024.

Roof Moss Removal In Victoria

Does your home have a mossy roof? There’s a good chance it does, given our wet West Coast weather. Some Greater Victoria communities, such as Sidney or the West Shore, have additional moisture from the ocean that can promote moss growth.

Coastal Shores is Victoria’s roof moss removal experts!

With over 250 positive 5-star reviews on Google, we are proud to offer exterior cleaning services, like moss removal, to Greater Victoria residents and business owners.

Moss Removal Client Reviews

Demossing Driveways, Walkways, and Patios

Moss and algae on hardscaping are not just unsightly—they are a serious slip-and-fall hazard, especially during Victoria’s wet season. Our approach to cleaning driveways, sidewalks, and patios involves a gentle but effective method that restores curb appeal without damaging your concrete or pavers.

Unlike roofing, these durable surfaces often benefit from a low-pressure wash combined with our eco-friendly treatment. This specialized process lifts the embedded growth from the pores of the stone, asphalt, or cement, leaving your high-traffic areas safe and looking brand new. For moss removal in Victoria BC, Coastal Shores is the best choice.

Moss removal on the walkway
Deck Cleaning

Deck and Fence Demossing & Surface Protection

In the Pacific Northwest, wooden structures like decks, railings, and perimeter fences are prime targets for organic growth. Moss acts like a sponge, trapping moisture against the wood and accelerating rot, warping, and premature deterioration.

Our technicians are trained to assess the specific wood type (cedar, pressure-treated, etc.) before applying any treatment. We use a tailored, ultra-low-pressure soft wash to safely remove the moss and mildew, ensuring the structural integrity of your deck is preserved.

After demossing, we recommend a preventative treatment to inhibit regrowth. This maintenance not only restores the natural beauty of your wood but significantly extends the lifespan of your exterior investments.

Our Moss Removal Service Areas in Greater Victoria

Coastal Shores Window Cleaning is proud to be the trusted local exterior cleaning company for homeowners and businesses throughout the Greater Victoria region. Based in Victoria, our expert teams cover the entire Capital Regional District, ensuring comprehensive and prompt service regardless of your location.

We offer free, no-obligation moss removal consultations across our extensive service map, including:

  • Victoria: Downtown, Oak Bay, Fairfield, Fernwood, James Bay

  • Saanich: Broadmead, Cordova Bay, Royal Oak, Gordon Head

  • West Shore: Langford, Colwood, View Royal, Metchosin

  • Peninsula: Sidney, Central Saanich, North Saanich, Swartz Bay

  • Other Municipalities: Esquimalt, Sooke

Given the specific microclimates on the West Coast, properties in areas with high coastal moisture, such as Sidney and the West Shore, often require specialized preventative treatments. Rest assured, our local expertise means we understand the unique moss growth challenges facing every Victoria community.

If you don’t see your neighbourhood listed, contact us! We are continually expanding our service routes to meet the demand for professional moss removal throughout Vancouver Island.

More Moss Removal Tips

Moss Removal is commonly associated with roof maintenance and preventing costly repairs. However, moss and other Bryophyta can do more than destroy your roof. Moss acts as a sponge storing water creating rot on wooden surfaces such as decks, railings and even on your perimeter fencing. Additionally, it can cause corrosive water damage to stone, cement, brick and asphalt surfaces by exploiting tiny fishers. Finally, as the moss grows, it can expand these cracks causing lasting destruction to your property.

Hiring a professional moss removal company can protect you from unnecessary injuries. For example, removing moss from your roof can be a difficult and tedious process. Climbing up onto your roof and applying a chemical treatment can leave you standing on a slippery and treacherous surface. Here at Coastal Shores, we train our employees to use the correct fall arrest and, if possible, fall restraint systems. This ensures all parties are protected from very preventable injuries and headaches. Our employees are also highly trained in using our high-grade pressure washing and chemical treatment systems. This is also important to prevent injury when eradicating moss found elsewhere on your property.

Coastal Shores Window Cleaning is based in Oak Bay. However, we operate in a vast area throughout Greater Victoria, to which we offer free moss removal consultations. This includes Langford, View Royal, Saanich, Cordova Bay, Esquimalt, Colwood and Sooke. We provide a long-lasting, environmentally friendly solution to remove destructive moss, mildew, mould and algae from the exterior surfaces of your home.

Why Choose Our Demossing Company?

The Best Roof Demossing and Pressure Washing Services

The most effective way to prevent invasive growth on your roof is through a seasonal moss removal regime. The team here at Coastal Shores are well-known proven experts in our field. We have grown a reputation of excellence by always completing each job on time with 100% customer satisfaction. Allow us to remove all moss from your property, restoring the curb appeal to your home and prevent costly, unnecessary damage. Moss removal is our specialty and with us you will get exactly what you pay for. We deliver the goods at an affordable rate without sacrificing quality or safety to save a buck.

Call or email Coastal Shores today for your free estimate.

Frequently Asked Questions About Moss Removal

Due to the persistent moisture on Vancouver Island, we recommend a full moss removal every 3-5 years with an annual preventative chemical treatment to maximize the life of your roof.
Yes. Major shingle manufacturers, including CertainTeed and IKO, explicitly exclude damage caused by organic growth from their warranty coverage. This means that if moss has deteriorated your shingles and you make a claim, the manufacturer can deny it. Attempting to remove the moss yourself with a pressure washer can make things worse — the high-pressure blasting strips granules from the shingles, which is another common warranty exclusion.
Coastal Shores uses a sodium hypochlorite mixture mixed with an apple scented surfactant to help it stick to the roof, which can also help with any smell sensory issues. Our solution is longer-lasting than many zinc-based alternatives that other exterior companies utilize. We also offer a more organic method for anyone concerned with environmental issues or if there are nearby bodies of water. Bleach can enter creeks, lakes or even the ocean of the perimeter drains that lead that way. Instead of bleach, Coastal Shores uses a hydrogen peroxide based product and is safer for wildlife etc.
It’s increasingly possible, yes. Insurers — including some operating in BC — now use satellite and drone imagery to inspect roofs at renewal time. If they identify significant moss or resulting rot, they may classify it as “gradual deterioration” (a preventable maintenance issue), which can lead to a claim denial, a policy non-renewal, or a requirement that you provide a professional cleaning certificate before coverage continues.
Faster than most homeowners expect. Victoria’s combination of wet winters, persistent shade from Douglas Fir and Cedar trees, and low winter sun means roofs — especially north-facing slopes — can stay damp for weeks at a time. Moss holds moisture against shingles long after the rain stops, and as it grows it wedges under shingle laps and breaks factory sealants. Visible moss on the surface often means the damage underneath is already underway.
Pressure washing blasts moss off physically — which removes the visible growth but strips protective granules from your shingles in the process, often voiding your warranty. Soft washing uses biodegradable, low-pressure solutions to neutralize moss spores at the root without any physical agitation. The result is longer-lasting, warranty-safe, and far gentler on your roof’s surface.
For most homes in Greater Victoria, a professional soft-wash treatment every 2 years is a good rule of thumb. Homes under heavy tree cover — particularly in Oak Bay, Fairfield, or shaded areas of Saanich — may benefit from annual treatment. A quality soft-wash application includes a residual treatment that continues working after the visit, inhibiting regrowth well beyond the initial cleaning. Many exterior cleaning companies prefer to use zinc-based solutions; however, we found they don’t last very long so we use a different, longer lasting solution for our customers.

DIY moss removal is possible, but there are real risks. Pressure washing is one of the most common ways homeowners accidentally void their shingle warranty. Manual scraping can also lift shingle laps and break sealants. Store-bought zinc strips provide some prevention but don’t address existing growth. If your roof is still under a manufacturer warranty or if your insurer has flagged the moss, a professional treatment  is the safest option.

The price for professional moss removal is highly dependent on your roof’s size, pitch, and the density of the moss growth. Our services start at $550+ for smaller, standard-sized properties. We provide a custom, free quote after an on-site consultation to give you an accurate, fixed price, ensuring there are no surprises.

Absolutely. We never use high-pressure washing on your roof, as it can severely damage shingles and void manufacturer warranties. Our process involves gentle, physical demossing by hand and brush, followed by a professional-grade soft wash and the application of a green chemical treatment. This method is safe, effective, and provides long-lasting protection against organic growth.

We stand behind the quality of our work with a 2-year guarantee against the re-establishment of significant moss growth. If noticeable moss returns within the two-year period following our service, we will return to your property and re-treat the affected area at no additional cost. This guarantee ensures peace of mind and proves our commitment to using the highest-quality, long-lasting products.

No, our dedicated Moss Removal service focuses specifically on the roof, decks, and other exterior surfaces. Gutter cleaning is a separate, specialized service. However, we highly recommend bundling the two services together. This ensures any debris, dislodged moss, or cleaning products are completely cleared from your eavestroughs and downspouts before we leave your property. You can find more details on our Gutter Cleaning Services Victoria and Gutter Cleaning Langford pages.