Torch-applied modified bitumen creates watertight flat roofs for Edmonton pros. SB Torch explains multi-layer systems with fiberglass reinforcement, ideal for 2:12 pitches and below. Compare 20-year warranties, fire-rated apps, and why heat-welded seams outperform adhesives in windy prairies. https://sbtorch.ca/flat-roofing-edmonton-expert-roofing-services/