# Thomson Roof Treatment > Victoria BC's trusted roof moss removal and maintenance specialists, proudly serving homeowners, strata properties, and commercial clients for over 40 years with a non-toxic demossing process and a moss-free guarantee of up to 2 years. Thomson Roof Treatment (TRT) is a fully insured, WorkSafeBC-certified roofing maintenance company based in Victoria, British Columbia, Canada. Now owned and operated by the Garner Family (Wayne and Matt Garner), the company has built its reputation on quality, integrity, and service. TRT specializes exclusively in roof moss removal and treatment -- they do not perform roof or gutter repairs, nor gutter cleaning as a standalone service. They are accredited by the Better Business Bureau (BBB) with an A+ rating, and are members of VISOA and RCABC. Over 10,000 clients have been served across Greater Victoria, with nearly 600 verified reviews averaging 4.5 stars. A large percentage of their business comes from repeat and referral customers built up over several decades. ## Services - [Roof Moss Removal](https://thomsonroof.com/roof-moss-removal/): Full demossing service -- moss is removed by hand, a proprietary non-toxic treatment is applied to neutralize remaining moss, lichen, mold, and mildew down to the roots, and gutters are cleared. No pressure washing is used, as it damages roofing materials. - [Roof Moss Maintenance](https://thomsonroof.com/roof-moss-maintenance/): Ongoing moss prevention program. Once the initial removal is complete, re-treatment is applied at the end of the warranty period to keep the roof continuously moss-free. Re-treatment is simpler and more affordable than the initial job. - [Residential Homes](https://thomsonroof.com/residential-homes/): Moss removal and maintenance for single-family homes in Victoria and surrounding areas. - [Commercial Properties](https://thomsonroof.com/commercial-properties/): Professional moss removal services tailored to commercial buildings and properties. - [Strata Properties](https://thomsonroof.com/strata-properties/): Coordinated moss removal across strata developments and neighbourhoods, helping strata councils maintain consistent roof health across multiple units. ## Service Areas - [Victoria](https://thomsonroof.com/victoria/) - [Langford](https://thomsonroof.com/langford/) - [Sooke](https://thomsonroof.com/sooke/) - [Sidney](https://thomsonroof.com/sidney/) - [Colwood](https://thomsonroof.com/colwood/) ## Our Process 1. Preparation: The majority of visible moss is carefully removed by hand using small hand tools and a leaf blower. Loose debris is cleared from the roof, skylights, and gutters. The grounds are tidied before departure. Pressure washing is never used as it is not recommended by roofing product manufacturers, the RCABC, or Consumer Reports. 2. Application: Thomson's proprietary non-toxic, pet-safe, and garden-safe solution is applied across the entire prepped roof surface. It neutralizes any remaining moss, lichen, mold, and mildew spores and root systems. Dead moss debris washes away naturally over subsequent rainfall, gradually restoring the roof's appearance. 3. Maintenance: An individually specified moss-free guarantee of 12 to 24 months is provided. When the warranty period nears its end, clients are contacted for re-treatment to prevent regrowth from ever taking hold again. ## Warranty After each treatment, Thomson Roof Treatment provides an individually determined moss-free guarantee ranging from 12 to 24 months. The exact duration depends on factors such as nearby tree coverage and other conditions that influence moss regrowth rates. If any moss concerns arise during the warranty period, TRT will return to address them at no additional cost. Roofs should be re-treated promptly at the end of the warranty period to avoid moss re-rooting, as delaying re-treatment does not reduce the long-term monthly cost of maintenance but can result in additional prep charges if significant regrowth has occurred. Details: https://thomsonroof.com/our-warranty/ ## What Is Included in the Initial Treatment - Hand removal of visible moss - Application of the proprietary demossing solution - Clearing of open gutters (gutter mesh/leaf guard interiors are not cleaned) - Debris cleanup of roof and surrounding grounds - Moss-free guarantee for 12 to 24 months Note: Gutter exterior wiping and cleaning of gutters with mesh covers or leaf guards is not included. ## Key Facts - 40+ years in business in Victoria, BC - Over 10,000 clients served across Greater Victoria and surrounding communities - Nearly 600 reviews averaging 4.5 stars - BBB Accredited Business with an A+ rating - WorkSafeBC Certified -- Number: 200670049 - VISOA (Vancouver Island Strata Owners Association) member - RCABC (Roofing Contractors Association of BC) member company - Owned and operated by the Garner Family (Wayne and Matt Garner) - A large portion of business comes from repeat customers and referrals - Uses no pressure washing -- method is gentle and roof-safe - Non-toxic treatment safe for pets, gardens, and surrounding landscaping ## Company Values - Quality: Do the job right the first time and exceed customer expectations. - Integrity: When a commitment is made, everything is done to honour it. - Service: Exceed expectations through positive interactions and genuine effort. ## Payment TRT does not accept in-person payment. Accepted methods: - Mailed cheque: PO Box 48026, 3511 Blanshard St, Victoria, BC V8Z 7H5 - E-Transfer: mossfree@thomsonroof.com - Credit card via emailed invoice pay button ## Scheduling Clients are notified by email or phone the day before work is scheduled in their neighbourhood. Due to unpredictable weather, advance notice cannot be given further out. Work is weather permitting and subject to change. ## FAQs - Do I need to be home for a quote? No -- as long as the property is accessible so the roof can be viewed from the ground. - Do I need to be home during the work? No -- ensure any locks blocking roof or yard access are left unlocked in advance. - Are you insured? Yes, fully insured. WorkSafeBC certification number: 200670049. Roof anchors may be used as part of the fall protection plan and will be removed upon job completion. - What should I do before the visit? Close all windows, move vehicles away from the building, and ensure access to exterior water. Protect any patio furniture, open pools, or ponds that TRT cannot access directly. - Do you do gutter cleaning or repairs? No -- TRT specializes in roof demossing treatment only. Referrals to local companies can be provided upon request. - Is gutter clearing included? Yes, clearing of open gutters is included with the initial treatment. During re-treatment, an additional charge may apply if gutters are heavily compacted and have not been cleared regularly. - Why not use pressure washing? Pressure washing is not recommended by roofing product manufacturers, the RCABC, and Consumer Reports, as it damages roof materials. TRT's hand-removal and solution method is safer and more effective long-term. ## Blog Articles - [The Crucial Importance of Keeping Moss Off Your Roof](https://thomsonroof.com/the-crucial-importance-of-keeping-moss-off-your-roof/) - [The Dangers of Power Washing Your Roof](https://thomsonroof.com/the-dangers-of-power-washing-your-roof/) - [Festival of Trees: Lighting Up Hearts for a Cause](https://thomsonroof.com/festival-of-trees-lighting-up-hearts-for-a-cause/) ## Contact - Phone: 778-400-4596 - Email: mossfree@thomsonroof.com - Request a Quote: https://thomsonroof.com/request-a-quote/ - Contact Page: https://thomsonroof.com/contact/ ## Additional Resources - About: https://thomsonroof.com/about/ - Our Process: https://thomsonroof.com/our-process/ - Our Warranty: https://thomsonroof.com/our-warranty/ - FAQs: https://thomsonroof.com/faqs/ - Reviews: https://thomsonroof.com/reviews/ - Gallery: https://thomsonroof.com/gallery/ - Blog: https://thomsonroof.com/blog/ - Privacy Policy: https://thomsonroof.com/privacy/