Science Of Roofing Shingles

Trudefinition duration shingles are specially formulated to provide dramatic color contrast and dimension to any roof.

Science of roofing shingles.

The typical underlayment used under asphalt shingles in residential construction is quite permeable. 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. A new coating can help shingles reflect more of the sunlight that heats them up. Roofing felts or underlayments vary greatly in their permeability to water vapor.

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. Our technical chemical and engineering expertise is second to none when it comes to the roofing industry. Then they ll also shed some of that heat into buildings. And that could cut home cooling bills.

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. Asphalt roofing shingles especially dark ones like those shown here can get scorching hot on summer days. 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.