Traditional tar and gravel flat roofing meets Edmonton's harsh weather head-on. SB Torch's guide compares built-up layers for impact resistance against sleek TPO and modified bitumen options. Discover energy-efficient choices, warranties up to 25 years, and pro tips for low-maintenance roofs that save on heating bills. https://sbtorch.ca/flat-roofing-edmonton-expert-roofing-services/