Dunnville, Ontario, June 23, 2026 (GLOBE NEWSWIRE) -- Watertite Roofing, a Southern Ontario commercial flat roofing company with over 50 years of industry experience, has published a research study evaluating commercial roofing contractors operating across Ontario. The study applies a standardized six-point evaluation framework to assess which contractors meet the performance and compliance standards required by commercial property owners, facility managers, and industrial operators in 2026. The