Galvanized Metal Flashing And Galvalume Metal Roofing

Both galvanized steel and galvalume weigh 100 to 150 pounds per 100 square feet and contain about 35 recycled materials.

Galvanized metal flashing and galvalume metal roofing. Iron or steel can be coated with zinc. The cost of galvalume and galvalume plus are about the same as that of galvanized steel. The zinc acts as a protective layer to iron or steel to prevent rust. The one exception is when the coating is penetrated scratched or chipped by falling or blowing debris for example.

Galvalume and galvanized steel roofing are affected differently by corrosion. 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 base metal. Studies show that when used on a. Galvanized steel eave drip flashing in polar white model 892dwh 6 85 6.

But galvalume has an excellent performance life in bare exposures as well. The more unpainted metal is exposed to the elements the more it will take on a life of its own. When we compare galvalume vs galvanized roofing although galvanized metal roofing has been proven to be better in certain applications especially when it comes to animal confinement galvalume metal roofing is the superior product a majority of the time. Galvanized metal roofing or galvalume metal roofing.

Corrosion is the death of metal roofing as we all know. Although galvalume metal and galvanized metal sound alike they have quite a few different characteristics and qualities. Typical g90 galvanized metal roofing can cost anywhere from 5 00 to 13 00 per square foot and can fluctuate further based on thickness color. Gibraltar building products 3 in.

This is known as a galvanized metal. Most galvalume like galvanized steel is coated. However in the last 20 years the pricing of these two materials has fluctuated back and forth but predictions for november 2019 show galvanized material is about 6 higher in price over galvalume. Composed of 55 percent aluminum and.

Aluminum has tremendous corrosion resistance so it will generally corrode more slowly than galvanized steel. About galvalume introduced into the construction marketplace by bethlehem steel in 1972 and now widely available around the world galvalume is carbon steel sheeting coated with aluminum zinc alloy by a continuous hot dip process. Via abc metal roofing. All coated steel materials however are vulnerable to corrosion at field cut edges although galvalume is the least affected table 2 10 below click to enlarge any image lists the advantages drawbacks compatibility and life expectancy of galvanized steel roofing aluminized steel roofing galvalume aluminum copper and zinc metal.

But what exactly are the differences between galvalume and galvanized.