Traditional asphalt shingles were compared to the Decra Roof System installed on battens by Oak Ridge National Labs. The benefits of the air-space created by installing the Decra shingles using the batten installation method were identified:
Decra Batten System Ventilation Benefits
Testing concluded that the air-space created by the battens reduced the heat transfer into the conditioned space by 30%. The testing further determined that the vented space was just as important as solar reflectance for reducing heat gain.
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