Galvalume Cool Roof

Cool roofs are not for high slope roofs in cool climates.

Galvalume cool roof.

With its expected long life metal roofing is a highly desirable and sustainable building component. But the paintline and the people who run it will make the difference design the best. Major costs of galvalume roofing. A measure of the success of this program is the fact that virtually all of the major steel companies worldwide have become licensees of biec.

Additionally many of the metals used. Berridge s kynar 500 hylar 5000. Galvalume steel comes in various gauges that determine the quality and price. The mixture of zinc and aluminum protects the galvalume metal against corrosion and rust helping galvalume typically last much longer than galvanized steel.

In general a cool roof is one that has relatively high solar reflectance and high thermal emittance. Corrosion is the death of metal roofing as we all know. 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. Berridge metal roofing is cool and sustainable the high reflectivity emissivity and solar reflectance index sri of berridge metal roofing helps mitigate the heat island effect.

Cool metal roof colors are optimal for reducing energy consumption particularly where cooling loads dominate. Galvalume sheet 5 aluminum zinc alloy galfan aluminum and lead tin alloy terne. Galvanized and galvalume metal roofs are hot roofs. Cool roofing is defined differently by various performance criteria in codes standards and incentive programs.

During the daylight hours a roof is constantly subjected to solar energy striking its surface. They have medium relfectivity and poor emissivity 15. Radiant barriers air spaces and added insullation all helps but nothing improves. In fact a high end kynar 500 white metal roof is energy star rated and classified as a cool roof by the cool roof rating council.

Via abc metal roofing. The one exception is when the coating is penetrated scratched or chipped by falling or blowing debris for example. Lighter color roofs reflect sun s heat much better than darker colors. 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.

What a consumer will pay for a galvalume roofing system depends on the quality of the material. Post navigation metal and coatings are important. Cool metal roofing is also eligible for other cool roof rating programs such as the cool roof rating council. For example a galvalume section that is 16 x3 known as a classic rib steel roof panel is 29 gauge steel and comes with a 25 year warranty.

Aluminum has tremendous corrosion resistance so it will generally corrode more slowly than galvanized steel. Galvalume and galvanized steel roofing are affected differently by corrosion. Painting a bare metal roof with white house paint dramatically improves preformance.