"Today’s construction climate places a heavy emphasis on green, sustainable building practices. For example, a building’s roof was once thought of as just a means to keep the building dry, but not anymore. The impact a roof can have on energy consumption is understood now more than ever, but determining which roofing surface is most energy efficient continues to generate spirited debate. Many experts agree that light-colored, reflective surfaces are most appropriate in warm southern climates while dark, heat-absorbing surfaces are best in the north. EPDM (ethylene propylene diene terpolymer) single-ply roofing membrane is the only roofing material that offers solutions for all climates without the need for additional coatings or modifications."