How Safe Is Metal Roofing in the Wind?

Types

• The term "metal roof" might call to mind images of old, rusted tin sheets topping big red barns. Today's metal roofs, however, are made from a large variety of materials, especially various steels, aluminum, copper and zinc. These metals form three types of roofing: sheeting with exposed seams and fasteners, sheeting that clips together with concealed fasteners and metal unit roofing such that made up of tiles or shingles.

Wind Resistance

• Another difference in today's metal roofs is their wind resistance. Most metal roofing is rated to withstand at least 90 to 120 mph winds -- equal to an F2 tornado. Depending on the style and installation methods, this rating may prove even higher. Experts agree, however, that modern metal roofs meet and exceed today's building codes. In fact, metal roofs generally garner a higher wind resistance rating than traditional wood or asphalt shingles, which often offer protection to only 50 to 90 mph.

Considerations

• Anecdotal evidence from homeowners and contractors suggests that in recent hurricanes, the metal roofs often remained stable while roofs made of other materials were ripped away. This increased stability protects not only the integrity of your home's structure but the also the safety of its contents. However, installation procedures, design, structural support and other features affect a metal roof's specific safety and stability rating.