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There's no better roof than a Thomson roof.

We specialize in moss removal that will help preserve the life of your roof while improving the look of your home. The only treatment of its kind, we have been providing service to lower Vancouver Island since 1980. Our work is effective and guaranteed in writing.

Our Mission

Our mission is to provide quality roof care that preserves the life of your roof and improves the look of your home.


includes manually removing moss that has accumulated. A blower is used to remove loose debris from the roof and gutters, and then to tidy up the grounds before they leave your site.


involves applying Thomson’s unique non-toxic soap based solution, which neutralizes any moss, lichen, mould or mildew present. We use a gentle, saturating method of application; we do not use pressure washing, which can damage your roof. 


guarantees that your roof will remain moss free for a specified number of months or we will return to make sure that you are satisfied, at no cost to yourself. We assess each roof individually, and will provide you with the most accurate warranty we can.

Get in touch today for a free quote!

Ellie H.

January 30, 2017

Prompt, polite, hard-working, cleaned up all the moss afterwards & hosed down the surrounding area of asphalt granules. Also took the refuse away. Boss was ill that day, so young fellow told me someone would be by within 24 hrs to apply treatment & they were. Also, final bill was exactly what was quoted- no … Continued

Terry G.

January 26, 2017

They kept me informed, they seem to do a good job and they cleaned up nicely plus the price was fair.

Bob A.

December 28, 2016

They do a good job and clean up nicely. We were told by our roof installers that they would only assure the guarantee of our roof if we used Thomson for moss removal. Thank you.

Anne S.

November 15, 2016

Professional and reliable

Diane T.

November 11, 2016

We are surrounded by trees and had a substantial moss problem. We had the original treatment two years ago and have been moss free since then.

Leslie M.

November 4, 2016

Person who did the work, was very polite and explained what he was going to do. He assured me he would check the roof and flashings etc. and let me know if anything needed attention. That was the info I was looking for—- thank you.

Joanne H.

October 26, 2016

You guys did a great job!!!

Barb B.

October 20, 2016

They came, they were polite– they did their job quickly and they cleaned up well!

Craig. B

October 16, 2016

The service was prompt and completed quickly. Thanks!

Mrs A.

October 15, 2016

10 out of 10 – Because you come when you say you will and you work neatly