Galvalume Vs Aluminum Roofing

Types of metal used in roofing.

Galvalume vs aluminum roofing.

Manufacturers fight rust by coating the roofing panels with either zinc or galvalume an alloy of aluminum and zinc to form a protective barrier. This coating acts as an excellent protection against corrosion. Galvalume roofing material combines three of the most important metals used in roofing today steel aluminum and zinc. Post navigation metal and coatings are important.

This superior roofing material also used as siding is actually sheets of steel coated with a composition of 45 zinc and 55 aluminum. Though there are many types of steel roofing we only carry galvalume steel roofing. The basics of aluminum roofs. 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.

We install both steel and aluminum standing seam metal roofs so we frequently advise customers as to which material is best for them. Metal roofs generally can run from 120 to 900 per 100. One roofing material that stands above the rest for high quality longevity and durability is galvalume. This entry was posted in architects building homeowners contractors metal roofing standing seam metal roof panels and tagged galvalume metal coil metal roofs roofing coil snow guards standing seam metal roof on january 15 2013 by mitch gaber.

Paint finish warranties are key to understanding the expected longevity of a galvanized or galvalume metal roof. Galvalume and galvanized steel roofing are affected differently by corrosion. 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. Here s our breakdown on steel vs.

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. But the paintline and the people who run it will make the difference design the best. Aluminum roofing comes with paint finishes as well and have their own warranties. Aluminum has tremendous corrosion resistance so it will generally corrode more slowly than galvanized steel.

The one exception is when the coating is penetrated scratched or chipped by falling or blowing debris for example.