Science Of Roofing Shingles

Wood shingles or shakes require a minimum 1 4 inch vented airspace that separates the shingles shakes and the roofing felt placed over the roof sheathing for similar reasons.

Science of roofing shingles.

Roofing felts or underlayments vary greatly in their permeability to water vapor. The demarcation between regions that require the control of condensing surface temperatures and regions that do not can be obtained by using the hygro thermal zones. Beyond the impressive curb appeal they also come with the advanced performance of patented surenail technology a technological breakthrough in roofing. The typical underlayment used under asphalt shingles in residential construction is quite permeable.

Asphalt roofing shingles especially dark ones like those shown here can get scorching hot on summer days. Our technical chemical and engineering expertise is second to none when it comes to the roofing industry. These shingles are available in all the popular colors. And that could cut home cooling bills.

For more than a century gaf has pioneered development and manufacturing of high performance residential and commercial roofing products through advanced r d and real world scientific programs. In ashrae fundamentals 2001 15 lb asphalt felt has a wet cup permeance of 5 6 and 15 lb tar felt is 18 2 perms. Trudefinition duration shingles are specially formulated to provide dramatic color contrast and dimension to any roof. The science of roofing.