EPDM, or ethylene propylene diene monomer, is a popular synthetic rubber roofing material known for its durability and water resistance. When it comes to energy efficiency, EPDM offers some benefits, particularly with its ability to reflect sunlight when installed in light colors. A white or light grey EPDM membrane can reduce heat absorption from the sun, lowering cooling costs in warmer climates by keeping attic spaces cooler. However, in colder regions, the naturally dark color of EPDM absorbs heat, which can be an advantage by slightly warming the building. This dual nature means that the energy efficiency of EPDM largely depends on where you live and the color or coatings chosen. Simple DIY checks to gauge energy efficiency include monitoring your indoor temperature and energy usage before and after roof installation or application of reflective coatings.
If you’re considering EPDM for energy savings, it’s wise to call a professional roofer to ensure proper installation and to discuss adding reflective coatings if your climate benefits from them. Ask your contractor about the Energy Star rating of the EPDM product and if it's eligible for rebates or energy efficiency incentives in your area. Another important question is about the warranty: does it cover performance related to energy efficiency, like the longevity of reflective coatings? A good roofer will inspect your roof’s insulation and ventilation as well since EPDM works best when combined with these elements to optimize energy savings throughout the year.