Commercial Roof Replacement

Quick Answer: A Calgary commercial roof typically needs replacement when annual repair spending exceeds 25% of replacement cost, insulation tests wet on an infrared scan, ponding water persists 48+ hours after rain, membrane blistering or seam separation covers more than 10% of the field, or the membrane has reached 80% of its rated life. Repeat tenant leak complaints over consecutive seasons usually confirm the diagnosis. A commercial roof rarely fails overnight. It signals

Quick Answer: Calgary commercial roof replacement typically costs $12 to $25 per square foot installed, with project budgets ranging from $30,000 for small retail units to $500,000+ for industrial and multi-tenant buildings. Most low-slope replacements run 2 to 6 weeks depending on size, membrane system, and weather. Common systems are TPO, EPDM, SBS modified bitumen, and built-up roofing. Alberta Building Code, energy code insulation requirements, and tenant continuity plann