TORONTO PREMIER ROOFING TORONTO & GTA – Experienced residential & commercial roofing contractors – quality roof installation and replacement in Toronto & the GTA. Rely on the Best Residential and Commercial roofing contractor in Greater Toronto Area. Toronto Premier Roofing is a family-based business serving the Toronto and GTA roofing market. With over 30 years of combined experience in shingled and flat roofing for residential and commercial applications, we are proud of our history of delivering customer satisfaction in an industry that’s difficult to trust.