Galvanized Vs Painted Metal Roofing

The rust on galvanized will just continue to spread and get worse because it doesn t have that self healing property.

Galvanized vs painted metal roofing. Final thoughts on galvalume vs. Corrosion is the death of metal roofing as we all know. But galvalume has an excellent performance life in bare exposures as well. Via abc metal roofing.

However paint is softer and thickness can vary. The problem with galvanized metal painted or not is that once it starts to red rust it doesn t eventually stop as galvalume does. The thick zinc rich paint we use providesr a layer of the zinc on the materials surface to further help with corrosion resistance. Aluminum has tremendous corrosion resistance so it will generally corrode more slowly than galvanized steel.

At buy metal roofing direct we love sherwin williams proven long lasting paint systems that last 40 60 years or lifetime. The cost of galvalume and galvalume plus are about the same as that of galvanized steel. Both galvanized steel and galvalume weigh 100 to 150 pounds per 100 square feet and contain about 35 recycled materials. Apply the sherwin williams paint and primer to a galvanized roof with a paintbrush or a roller specifically designed for corrugated metal.

This means that the painted coating is susceptible to chips and scratches exposing the underlying metal to corrosion. Paint finish warranties are key to understanding the expected longevity of a galvanized or galvalume metal roof. Sheffield metals is a leader in the distribution of coated and bare metal products as well as engineered standing seam metal roof ssmr wall systems. Aluminum roofing comes with paint finishes as well and have their own warranties.

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. 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. The one exception is when the coating is penetrated scratched or chipped by falling or blowing debris for example. Most galvalume like galvanized steel is coated.

Galvanised vs painted steel. If your budget will allow it painted metal roofing panels from buy metal roofing direct will give you greater energy efficiency and energy dollar savings over time as compared to mill finish gavalume panels.