Galvalume Vs Aluminum Roof

While more expensive than galvalume aluminum roofing is still at a medium price point for metal roofing.

Galvalume vs aluminum roof.

Such a roof can be reasonably expected to be some 50 to 60 degrees cooler than a dark color asphalt shingles roof. It s main benefits for homeowners are. Modern steel roofs are lightweight with very good corrosion resistance. The one exception is when the coating is penetrated scratched or chipped by falling or blowing debris for example.

Types of metal used in roofing. Corrosion is the death of metal roofing as we all know. Galvalume is offered in both bare and pre coated versions. Paint finish warranties are key to understanding the expected longevity of a galvanized or galvalume metal roof.

In fact a high end kynar 500 white metal roof is energy star rated and classified as a cool roof by the cool roof rating council. This article discusses the different types of metal used in metal roof systems the properties of each metal and their application including galvanized steel roofs aluminized steel roofs galvalume roofing aluminum roofs copper roofs and zinc metal roof systems. Aluminum roofing comes with paint finishes as well and have their own warranties. We also carry aluminum roofing.

Aluminum has tremendous corrosion resistance so it will generally corrode more slowly than galvanized steel. Steel roofs are usually supplied with a colored finish. Steel is the most common material used with roofing metal. 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.

It s also lightweight and easy to form on our end and even more recyclable than galvalume steel which appeals to the environmentally conscious. Most galvalume like galvanized steel is coated. The big difference is that aluminum will oxidize chalk if exposed to the elements but the aluminum will not look unsightly and continue on with a rapid oxidation process deterioration rust as steel will. Galvalume and galvanized steel roofing are affected differently by corrosion.

Manufacturers fight rust by coating the roofing panels with either zinc or galvalume an alloy of aluminum and zinc to form a protective barrier. Galvalume roofing material combines three of the most important metals used in roofing today steel aluminum and zinc.