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Moss free roofs from Victoria to Cowichan Valley

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!

Kay B. 10 out of 10

August 3, 2018

I appreciated the email reminder. Knew it was time to call Thomson but just needed the extra push to do something about it. The receptionist is the nicest person in the world – great asset to the company. Glad I chose Thompson many years ago for moss treatment.

Mrs B. 10 out of 10

August 3, 2018

No problems experienced

John S. 10 out of 10

August 1, 2018

Client didn’t leave any feedback

Royal Links North 10 out of 10

July 31, 2018

Your communication was excellent. This was especially appreciated when I had to answer some questions from the strata members. Your staff were polite and courteous to our strata members. Finally, it would certainly appear that our roofs look great! Let’s hope we can keep the moss away, now!

Ward and Jan M. 10 out of 10

July 31, 2018

We have used your service before and so has a few of our neighbors. We have also booked you to do our other home (which was done this past weekend ) My wife and I will gladly recommend your Company to any of our friends or family.

Lionel and Beverly M. 10 out of 10

July 17, 2018

Client didn’t leave any feedback

Wilma B. 10 out of 10

July 17, 2018

Reliable, friendly, replied very promptly to emails

Don. K 10 out of 10

July 15, 2018

Good service……good workmen

Darryl R. 10 out of 10

July 14, 2018

liked the way they kept in contact to advise when the job would be done. The roof looks great and they really cleaned up after the work was completed.

Sandra W. 9 out of 10

July 13, 2018

The actual roof treatment and gutter-cleaning was done quickly and well. I had to take off a point for the fact that I had to phone to find out why the team had not shown up at the time I was told to expect them. Thanks for letting us know about this Sandra, it was … Continued