Galvanized Metal Flashing And Galvalume Metal Roofing

Iron or steel can be coated with zinc.

Galvanized metal flashing and galvalume metal roofing.

Galvalume and galvanized steel roofing are affected differently by corrosion. But what exactly are the differences between galvalume and galvanized. Both galvanized steel and galvalume weigh 100 to 150 pounds per 100 square feet and contain about 35 recycled materials. Gibraltar building products 3 in.

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. The more unpainted metal is exposed to the elements the more it will take on a life of its own. 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. 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.

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. 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. 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. Aluminum has tremendous corrosion resistance so it will generally corrode more slowly than galvanized steel.

Corrosion is the death of metal roofing as we all know. A galvalume metal roof is durable and can outlast asphalt roofs by years. The one exception is when the coating is penetrated scratched or chipped by falling or blowing debris for example. Galvanized metal roofing or galvalume metal roofing.

Most galvalume like galvanized steel is coated. This is known as a galvanized metal. Studies show that when used on a. Set your store to see local availability add to cart.

Composed of 55 percent aluminum and. Galvanized steel eave drip flashing in polar white model 892dwh 6 85 6. The zinc acts as a protective layer to iron or steel to prevent rust. Water tite adjustable 3 n 1 galvanized steel base roof flashing model 81710 226 96 226 96.

The cost of galvalume and galvalume plus are about the same as that of galvanized steel.