EPDM
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LEXIS PrimeLock EPDM Primer is a highly concentrated rinseable etching primer for EPDM rubber roofs. Removes grease and grime from EPDM roofs.
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The performance of A/C system can be severely degraded by heat gain coming from the roof. An A/C system works by removing heat from the room and dissipating it outdoors. Any heat gain around the supply ducts, return plenum, ceiling and roof-top units contribute to this degradation. In this case study, the heat gain on the A/C system probably reduced the cooling efficiency by as much as 40%.
There are three properties to look for when selecting a roof material to reduce building cooling load: high solar reflectance, endurance of high reflectance over time.
The EPA’s Energy Star program looks at Energy Saving Roofs and has been labeling energy efficient roofing products and now is looking at reflective roofing.