Science Of Roofing Shingles

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.

Science of roofing shingles.

Then they ll also shed some of that heat into buildings. A new coating can help shingles reflect more of the sunlight that heats them up. Beyond the impressive curb appeal they also come with the advanced performance of patented surenail technology a technological breakthrough in roofing. 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.

Roofing felts or underlayments vary greatly in their permeability to water vapor. Consumer reports just finished its first comprehensive review of asphalt roofing shingles in more than a decade and found that the best of the batch are more than twice as strong as the competition. The typical underlayment used under asphalt shingles in residential construction is quite permeable. These shingles are available in all the popular colors.

Asphalt roofing shingles especially dark ones like those shown here can get scorching hot on summer days. 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. Trudefinition duration shingles are specially formulated to provide dramatic color contrast and dimension to any roof. The science of roofing.