Unpainted Galvalume Metal Roof

Treat the sheet steel with an etching primer or flaking will result.

Unpainted galvalume metal roof.

Galvalume is a type of sheet steel used in a variety of applications including roofing siding furniture gutters and pipe. It is a trademarked name but many people use it as a generic term to describe a metal roofing product consisting of steel coil coated with a metal alloy. Galvalume has an excellent performance lifespan in bare exposures unpainted panels as well. See our fact sheet on galvalume plus for more information.

Aluminum helps prevent corrosion which is highly valuable for a roof that you want to last a long time. The reason aluminum was chosen as the one of the metals to coat the steel was. Copper zinc stainless steel galvalume or any other unpainted metal roofing material all have their appeal. That alloy is 45 zinc and 55 aluminum and looks similar to galvanized steel but the visible crystals are smaller and close together giving it a smoother appearance.

Barrett roofing photo those who have chosen to fashion and install unpainted metal roofing as their craft respect the material of choice because installed correctly it provides a unique look and low maintenance long lasting peace of mind. Galvalume is a sheet steel product covered with an aluminum zinc coating. It will age naturally creating a unique one of a kind metal. Galvalume will reject paint unless it is properly treated.

Most residential grade galvalume metal roofing products like galvanized steel are coated with kynar 500 or hylar 5000 paint finishes. 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. If you want to paint a galvalume surface consider a crucial point. Which bring us to the next metal that helps coat the steel zinc.

Unpainted galvalume can. Galvalume plus has a clear organic resin coating applied to both sides of galvalume steel sheet can be roll formed without lubricants and is delivered to the job site with an oil free surface. These metals are both. Abc s hot dipped aluminum zinc alloy coated galvalume sheet steel sold for use as unpainted steel building roofing and siding panels if erected within the united states will not rupture fail structurally or perforate due to corrosion within a period of 20 years from date of shipment due to exposure to normal atmospheric conditions.

Although galvalume metal and galvanized metal sound alike they have quite a few different characteristics and qualities. For unpainted applications bare galvalume plus is available. Galvalume roofing material combines three of the most important metals used in roofing today steel aluminum and zinc.