ROOF DEMOSS TREATMENTS START AT $600 ( for spray of roof up to 1800 sq/ft ) not included gutter cleaning. WITH A 2 YEARS WARRANTY REGARDLESS IF YOUR HOUSE HAS MANY TREES AROUND IT. YES , WE HAVE THE TREATMENT THAT PREVENTS MOSS FROM FORMING AND WE CAN HELP YOU TO RESTORE YOUR ROOF. WE HAVE WCB INSURANCE WE ARE RELIABLE AND HAVE 12 YEARS SERVING VANCOUVER ISLAND WE ARE A TRUSTED COMPANY MEMBER OF BBB WITH AN ( A+ RATING) We carry $2,000.000 Liability Insurance