Galvalume Vs Galvanized Steel Roofing

If you re considering a galvalume metal roof or galvanized metal roofing get in touch with a product specialist today.

Galvalume vs galvanized steel roofing.

What is galvalume and why is it used for metal roofing. Corrosion is the death of metal roofing as we all know. Our team can help you choose the perfect metal coating for your project and. Both galvanized steel and galvalume weigh 100 to 150 pounds per 100 square feet and contain about 35 recycled materials.

From galvanized steel roofing to galvalume metal roofs both finishes reinforce metal s strength performance and increase its longevity. Traditional galvanized metal roofing is a corrugated sheet of carbon steel with a galvanized coating. The one exception is when the coating is penetrated scratched or chipped by falling or blowing debris for example. 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.

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. Bethlehem corporation galvalume vs. The cost of galvalume and galvalume plus are about the same as that of galvanized steel. This article takes a look at galvalume vs galvanized roofing.

Aluminum has tremendous corrosion resistance so it will generally corrode more slowly than galvanized steel. When completing a project with corrugated sheet should you go with a galvanized or galvalume metal roof. Via abc metal roofing. 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.

The coating is created by dipping the straight sheet in hot molten zinc. Most galvalume like galvanized steel is coated. The zinc ions. In fact galvalume has been around for more than 40 years after bethlehem steel created galvalume.

Many steel mills nowadays license the product because of its popularity. 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. 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.

Galvalume roofing material combines three of the most important metals used in roofing today steel aluminum and zinc. The galvalume coating is made up of 55 aluminum and 45 zinc. Galvanized sheet is carbon steel sheet coated with zinc on two sides by a continuous hot dip process. Galvalume is an alloy with both zinc and aluminum in it.