Galvalume Metal Roofing Types

How long do metal roofs last.

Galvalume metal roofing types.

On average they have a 40 to 70 year life span depending on the type of metal used the harshness of the local climate and the skill of the installer. This coating helps extends the life of a steel panel and slow the corrosion process. Normally galvalume is offered in both bare and pre coated pre painted versions. Here s a side by side comparison of metal roofs and other common roofing materials.

Galvalume steel is best for use in prefabricated metal wall panels and standing seam metal roof applications with concealed fasteners. Use galvalume for a sophisticated metal accent on office buildings rustic and modern homes or in industrial style restaurants. Galvanized galvalume and weathering steel. When selecting a roofing material there are many factors to take into consideration beyond installation cost.

There are 3 primary types of steel roofing. That s two to six times the cost of an asphalt roof. Since 1972 over 140 million tons of licensed product has been produced globally. The mixture of zinc and aluminum protects the galvalume metal against corrosion and rust helping galvalume typically last much longer than galvanized steel.

That alloy is 45 zinc and 55 aluminum and looks similar to galvanized steel but the visible crystals are smaller and close together giving it a smoother appearance. We would not recommend using galvalume panels with exposed fastener steel roofing systems such as corrugated or ribbed steel roofs. Galvanized steel is actually created by using a layer of zinc to protect an inner layer of steel from corrosion. Galvalume metal roof and siding panels are coated with a mixture of zinc and aluminum and siliconized coating to help resist scuffs and fingerprints better than a bare metal product.

Installed metal roofs run 7 to 20 per square foot depending on the type of metal used. While the initial investment of a metal roof is higher the value it offers over a lifetime is substantial. It is a trademarked name but many people use it as a generic term to describe a metal roofing product consisting of steel coil coated with a metal alloy.