Cool Roofs
Cool Roofs are roofs consisting of materials that effectively reflect the sun's energy from the roof surface. Cool materials for low-slope roofs are mainly bright white in color, although non-white colors are available for sloped roof applications. Cool roofs must also have high emissivity, allowing them to emit infrared energy. Bare metals and metallic coatings tend to have low emissivity and are not considered cool materials.
Cool roofs reduce the roof surface temperature by 50 to 60 degrees F, thereby reducing the heat transferred to the building below. This helps reduce energy costs by keeping attics and ducts cooler, improve occupant comfort, cut maintenance costs, increase the life span of the roof, and reduce urban heat islands and their associated smog. All cool roofs for which compliance credit is taken, regardless of compliance approach, must meet the Title 24 requirements.
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Cool Roof Overview Energy Expert Steve Easley explains how cool roof technology works and provides an overview of cool roof impacts on energy savings in nonresidential buildings.
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Installation of Cool Roofs for Newly Constructed Buildings Cool roof contractor Mark Mahrenholz describes the installation of a cool roof on a newly constructed building.
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Contractor/Facility Manager Interviews Steve Easley interviews cool roof contractors and operators of buildings to get their perspectives on the advantages of cool roof technology.
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Title 24 Cool Roof Inspections Building Inspector Robert Merrick shows other California building department personnel what to look for when inspecting a cool roof system for Title 24 compliance.
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Cool Roofs Installation Steve Easley discusses the cool roof installation process with Jesse Quezada, Sarnafil Roofing Company. He also talks about the different types of cool roof technologies and products with Ted Michaelson, PhD, former Executive Director of the Roofing Industry Educational Institute.
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Cool Roofs Energy Performance Lisa Gartland, PhD, former Director of the Sacramento Cool Community Program, explains how cool roofs work and discusses the energy savings possible with cool roof technology.
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