We remove the majority of visible moss by hand- taking special care to respect your roof! A leaf blower is used to remove the loose debris from the roof and gutters, and then we tidy up the grounds before we leave your property. We do not use pressure washing, which can damage your roof and is not recommended by roofing product manufacturers and their associations. See Roofing Contractors Association of BC "Consumers Guide to Roofing."
We take care to apply Thomson Roof Treatment to the whole prepped roof surface. Our Treatment is a unique non-toxic solution and is safe for pets and gardens! Thomson Roof Treatment neutralizes any remaining moss, lichen, mold or mildew spores or root systems that can't be cleaned by hand. Our gentle, saturating method of application means your roof stays moss and mildew free for up to 24 months.
Thomson Roof Treatment 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.
Roofs must be re-treated promptly at the end of the warranty period to avoid allowing moss to re-root and grow. Although it may be convenient or seem financially prudent to delay re-treatment, we have found that the monthly cost to maintain your roof remains constant regardless of when re-treatment is done, the only change is the potential damage that is done to your roof when moss is allowed to continue to take root.
Over ten years of proper maintenance, a roof maintained regularly by Thomson Roof Treatment will avoid damage caused by moss re-growth