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The Great Canadian Roof Doctor Inc. provides roof weatherproofing services on Vancouver Island, Gulf Islands and the Lower Mainland. Our exclusive Roof Sealer Dr. Shields Canadian Roof Armor is available for purchase across Canada. 

In addition to installing, repairing, or cleaning (de-mossing) most roofs: metal, concrete tile, cedar, torch-on (flat), or fibreglass asphalt shingle … we also extend the lifespan of new or existing tile, torch-on, and fibreglass asphalt shingle roofs by weatherproofing (sealing) them, industrial metal roofs by coating them and cedar roofs by oiling them.

Roof shingles across Canada need replacement after 15 to 20 years on average, despite manufacturers frivolous 30 & 50 year warranties. Landfills are filled with millions of tons of roof waste every year. Until now, no one in Canada has addressed this problem.

In 2011 The Great Canadian Roof Doctor Inc. developed Dr. Shields Canadian Roof Armor, as Canada’s first weatherproofing roof sealer, a clear acrylic penetrating spray-on roof sealer designed to weatherproof your current roof shingles by gluing the protective granules in place and stoping the drying out process of the asphalt. One coat is projected to at least double shingle life expectancy from their 18-year average lifespan to more then 40 or 50 years. This has obvious cost saving benefits and reduces your carbon footprint by not sending your old roof to the landfill. For a fraction of the cost of a new roof, we will apply our exclusive weatherproofing roof sealer on your existing roof shingles. Have moss, dirt, algae? No problem, we clean & seal, your roof will look brand new when we are finished.

Roof lives matter, join our growing list of of over 1,000 customers who have decided to skip their next re-roofing. It's a no brainer, call now to receive a free estimate. We are now booking weatherproofing orders into summer of 2018.

Why Choose Us


For over 15 years, we have been installing first-rate roofing systems for B.C. families and businesses. Since 2011 we have pioneered a new sector to the Canadian roofing Industry....."Weatherproofing (Sealing)" Asphalt shingle, torch on & tile roofs.


We source our materials from nationally known manufacturers, ensuring a dependable, durable roof for your home or building.


Most of our customer’s first heard of The Great Canadian Roof Doctor Inc. from previous customers and they, as well as recent clients, have expressed their satisfaction in writing. Check out our testimonial page and our reviews on google.




"Dr. Shields Canadian Roof Armor" is an exclusive product offered only by "The Great Canadian Roof Doctor Inc". Protecting against Sun, Rain, Wind, Fire, Ice, Snow, Salt, Hail, Moss & Algae. If your roof is caught in time, you may never have to re-roof. Visit our weatherproofing page to learn more. 


The Great Canadian Roof Doctor Inc. offers non-prorated Warranties that are Transferable. We offer a 50 year warranty on our shingle installations when "Dr. Shields Canadian Roof Armor" is applied. This covers 100% Replacement Cost Coverage on both material and labor. Ask to see our new 10 year weatherproofing warranty. 


We provide you with a detailed quotation and firm pricing. 

Who We Are?

The Great Canadian Roof Doctor Inc. is owned by Brad Berekoff. Brad began his roofing career in 1998 at the age of 18 with Kelowna Roofing in the Okanogan Valley. He worked as a sheet metal mechanic fabricating & installing steel metal roofing. After moving to Victoria, BC he had the privilege of working closely with and learning from with his uncle Kevin from installing more steel metal & shingle roofing on Vancouver Island & Gulf Islands.


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