Uses for Galvanized Metal Roofs & Walls

Before the introduction of Galvalume to the metal roofing industry in the late 20th century, using galvanized sheets and coils for roofing was a regular practice. However, because of the superior durability and corrosion resistance of Galvalume, 90+ percent of the metal roofing and wall industry in the early 2000s transitioned from galvanized substrates to a Galvalume substrate.

Galvanized metal sheet/coil is commonly referred to by its coating weight name. For instance, someone might refer to it as G90 or G60 which refers to the galvanizing coating weight of 0.90 ounces and 0.60 ounces per square foot. For reference, architectural metal roofing follows the ASTM A653 Standard Specification for Steel Sheet, Zinc-Coated (Galvanized) or Zinc-Iron Alloy-Coated (Galvannealed) by the Hot-Dip Process, which specifies that both sides of G90 galvanized steel sheet products have a 0.45 coating weight, which together equals 0.9.

Galvanized metal is installed on various roofing applications, including:

Agricultural – Barns, storage, animal enclosures, and more

Structural or industrial applications – Warehouses, factories, and more

Residential projects – Single-family, multi-family, condominiums, and more

Commercial buildings – Hospitals, schools, stores, government buildings, and more

Architectural structures – Commercial, governmental, residential, and more

Hot Dipped Galvanized Steel Sheet in Coil