Residential Unpainted Galvalume Roof

To illustrate the difference in performance between galvanized and galvalume steel let s consider how the two kinds of steel would perform in an uncoated unpainted steel roofing application.

Residential unpainted galvalume roof.

Post navigation metal and coatings are important. With this treatment galvalume must be oiled with either vanishing or slushing oil. See our fact sheet on galvalume plus for more information. Unpainted galvalume can also be passivated with a chemical treatment.

But the paintline and the people who run it will make the difference design the best. 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. Painted metal roofs vs unpainted. 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.

We get this question a lot. Galvalume is a sheet steel. Sides of galvalume steel sheet can be roll formed without lubricants and is delivered to the job site with an oil free surface. Although galvalume metal and galvanized metal sound alike they have quite a few different characteristics and qualities.

Galvanized and galvalume steel roofing it is important to note that base metals can be combined coated or layered with additional metals in a variety of bonding processes. An estimated 80 billion square feet of galvalume sheet steel now covers buildings in all kinds of climates and environments throughout the united states canada and mexico as well as europe asia india and australia. Sheet roofing can be installed painted or unpainted. Sheet roofing can also give a historical look particularly if used unpainted.

The more unpainted metal is exposed to the elements the more it will take on a life of its own. The answer to the question isn t always an easy one. Most galvalume metal roofs come with a 25 year warranty if the metal roofing manufacturer is using galvalume with a full az55 coating. Studies show that when used on a residential house that a galvalume metal roof will outlast a galvanized metal roof by almost double.

Lets dive in a little. Painted metal roof vs. A galvalume metal roof is durable and can outlast asphalt roofs by years. With a quality paint finish such as kynar 500 both g 90 galvanized steel and galvalume steel should provide consistent rust free performance for.

So what exactly is galvalume anyway. Frequently asked questions about galvalume sheet roofing. More than 40 years after its development galvalume roofing and siding panels are used everywhere. Because sheet roofing is often chosen as a more economical type of metal roofing the paints used on sheet metal roofing are often lesser quality.