Metal Roof Snow Load Ontario — ROOFNOW™ Guide

G90 galvanized steel is one of the most protective roofing materials available for winter climates. Armadura® metal panels use full G90 coating to ensure long-term corrosion resistance in Ontario’s harsh freeze–thaw cycles.

Snow Load and Corrosion

As snow melts on asphalt roofs, water can seep into layers and accelerate rot. G90 steel prevents corrosion caused by standing moisture. For more technical roofing science, visit ROOFNOW™ Knowledge Center.

What Is G90 Coating?

G90 refers to the zinc mass applied to steel during galvanization. This protective zinc layer acts as a sacrificial shield that prevents rust even when exposed to moisture and ice.