A Hy-Grade Steel Roof is engineered to withstand all facets of Ontario’s harsh weather conditions. Our roofing system is very strong and durable. It’s made with 26-gauge, G-90 galvanized Canadian-made steel and coated with 4 mils thick PVC coating that’s elastic enough to expand and contract with the steel. Our system is tested to withstand sustained winds of up to 120 km/h. That’s hurricane-level winds! It will not crack, chip, peel or lift when struck by hail or heavy winds.