The best brands of shingles for roofing in Canada must handle extreme cold, ice dams, heavy snow, and high winds, so durability and warranty are key. Number one is GAF, with its Timberline HDZ and UHDZ shingles being North America's best-selling shingle, offering excellent wind rating up to 130 mph, StainGuard algae protection, and strong Canadian distribution, though made in the US with CSA compliance. Number two is Owens Corning, with Duration and Oakridge shingles featuring SureNail Technology for extra wind resistance and great cold-weather performance, widely available at Canadian distributors. Number three is CertainTeed, owned by Saint-Gobain, offering Landmark and Landmark Pro shingles with strong durability and color options, manufactured in both US and Canada. Number four is IKO, which is one of the few Canadian-owned shingle manufacturers headquartered in Brampton, Ontario with plants in Canada, offering Cambridge and Dynasty lines designed specifically for Canadian winters and very popular in Canada. Number five is BP Building Products, owned by Saint-Gobain, manufactured in LaSalle, Quebec, making it truly Canadian-made with lines like Mystique and Manoir. Other top Canadian choices include Malarkey and Atlas. For true Canadian-made, IKO and BP are best for supporting Canadian jobs and formulations tested for minus 30 weather, while GAF, Owens Corning, and CertainTeed offer best overall technology and warranty.
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