Galvalume Vs Galvanized Steel Roofing

When completing a project with corrugated sheet should you go with a galvanized or galvalume metal roof.

Galvalume vs galvanized steel roofing.

Back in 1972 bethlehem steel trademarked the metallic coating galvalume that is applied to a steel base sheet used in the forming of metal roofing panels. The cost of galvalume and galvalume plus are about the same as that of galvanized steel. Via abc metal roofing. But galvalume has an excellent performance life in bare exposures as well.

This method tightly adheres the coating to the steel with an iron zinc alloy bonding layer formed by a diffusion process while the heated steel strip is in contact with the molten zinc. Many steel mills nowadays license the product because of its popularity. This article takes a look at galvalume vs galvanized roofing. Galvalume is an alloy with both zinc and aluminum in it.

Traditional galvanized metal roofing is a corrugated sheet of carbon steel with a galvanized coating. If you re considering a galvalume metal roof or galvanized metal roofing get in touch with a product specialist today. The zinc ions. Manufacturers begin with a carbon steel base sheet that is then continuously hot dipped with aluminum and zinc alloys until it reaches a coating consisting of 55 aluminum 43 4 zinc and 1 6 silicone.

Aluminum has tremendous corrosion resistance so it will generally corrode more slowly than galvanized steel. The answer lies in the difference between the two. Most galvalume like galvanized steel is coated. In fact galvalume has been around for more than 40 years after bethlehem steel created galvalume.

Galvanized and galvalume steel roofing it is important to note that base metals can be combined coated or layered with additional metals in a variety of bonding processes. Galvanized sheet is carbon steel sheet coated with zinc on two sides by a continuous hot dip process. Both galvanized steel and galvalume weigh 100 to 150 pounds per 100 square feet and contain about 35 recycled materials. Corrosion is the death of metal roofing as we all know.

The galvalume coating is made up of 55 aluminum and 45 zinc. Two popular roofing materials that use this process of binding two or more dissimilar metals are referred to as galvanized and galvalume each of which use steel as the. Galvalume is a metallic coating that is applied to the base sheet of steel that is used in metal roofing. Galvalume roofing material combines three of the most important metals used in roofing today steel aluminum and zinc.

Our team can help you choose the perfect metal coating for your project and. Galvalume and galvanized steel roofing are affected differently by corrosion. What is galvalume and why is it used for metal roofing. The coating is created by dipping the straight sheet in hot molten zinc.