Not all Edmonton flat roofing companies are created equal — and when you're investing $60,000 to $200,000+ in a commercial flat roof, the stakes are high. This post from Silverback Torch On Systems outlines the 7 key things every Edmonton property owner or manager should verify before hiring a flat roofing contractor: specialization, COR certification, WCB coverage, manufacturer crede... https://sbtorch.ca/flat-roofing-companies-edmonton-how-to-choose/