Unpainted Galvalume Roof

The mixture of zinc and aluminum protects the galvalume metal against corrosion and rust helping galvalume typically last much longer than galvanized steel.

Unpainted galvalume roof.

It can also be used to replace steep slope screw down roofs with exposed fasteners. Once corrosion has penetrated the sheet steel substrate of any steel roofing the integrity of the steel will suffer and your steel roof will begin to fall apart. Galvalume uses an alloy of 45 zinc 55 aluminum to create an extra durable panel is ideal for roofing and siding. Selecting the right paint finish for your steel roof.

Uses for galvalume metal roofs walls overall galvalume is suitable as a roof wall trim accent and more in most building applications in some of the most extreme environments including hurricane zones locations with high rain or snowfall high temperature regions and more. For non residential roofing low slope concealed fastener standing seam roofs are best made of unpainted galvalume. Aluminum helps prevent corrosion which is highly valuable for a roof that you want to last a long time. Most galvalume like galvanized steel is coated.

For nonresidential roofing bare or unpainted galvalume sheet is used for low slope concealed fastener standing seam roofs ssr as a replacement for nonmetallic built up rubber and ballasted nonmetallic roofs and for steeper slope screw down roofs with exposed fasteners. The reason aluminum was chosen as the one of the metals to coat the steel was. Galvalume metal roof and siding panels are coated with a mixture of zinc and aluminum and siliconized coating to help resist scuffs and fingerprints better than a bare metal product. Unpainted galvalume has a lifespan up to 40 years.

Galvalume is offered in both bare and pre coated versions. Bare unpainted galvalume has undergone extensive testing by the oak ridge national laboratory ornl to determine its solar reflective performance. The fine grained galvalume finish is more corrosion resistant than galvanized. Galvalume may also be referred to as az 50 for painted and az 55 for unpainted sheet coil which refers to the coating weight.

Test results have qualified galvalume as an approved roof product by the u s. Galvalume is a sheet steel product covered with an aluminum zinc coating. The shiny surface provides excellent heat reflectivity which can result in lower energy demands and improved comfort. On newly manufactured galvalume heat.

Galvalume is more corrosion resistant than galvanized steel but because aluminum provides barrier protection instead of galvanic protection scratches and cut edges are less protected.