Galvalume Vs Galvanized Steel Roofing

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.

Galvalume vs galvanized steel roofing.

Our team can help you choose the perfect metal coating for your project and. What is galvalume and why is it used for metal roofing. From galvanized steel roofing to galvalume metal roofs both finishes reinforce metal s strength performance and increase its longevity. Galvalume and galvanized steel roofing are affected differently by corrosion.

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. The coating is created by dipping the straight sheet in hot molten zinc. Galvalume is a metallic coating that is applied to the base sheet of steel that is used in metal roofing. The answer lies in the difference between the two.

Aluminum has tremendous corrosion resistance so it will generally corrode more slowly than galvanized steel. In fact galvalume has been around for more than 40 years after bethlehem steel created galvalume. If you re considering a galvalume metal roof or galvanized metal roofing get in touch with a product specialist today. Galvalume is an alloy with both zinc and aluminum in it.

This article takes a look at galvalume vs galvanized 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. Via abc metal roofing. 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. 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. The cost of galvalume and galvalume plus are about the same as that of galvanized steel. When completing a project with corrugated sheet should you go with a galvanized or galvalume metal roof.

Galvanized sheet is carbon steel sheet coated with zinc on two sides by a continuous hot dip process. The zinc ions. The one exception is when the coating is penetrated scratched or chipped by falling or blowing debris for example. Most galvalume like galvanized steel is coated.

Traditional galvanized metal roofing is a corrugated sheet of carbon steel with a galvanized coating. Bethlehem corporation galvalume vs. Galvalume roofing material combines three of the most important metals used in roofing today steel aluminum and zinc. But galvalume has an excellent performance life in bare exposures as well.