The two most popular types of rubber roofing used in construction properties are EPDM and TPO. EPDM stands for ethylene propylene diene monomer, which is a synthetic rubber, black in color. TPO stands for thermoplastic polyolefin, which is a type of rubber white in color. Rubber roofing can be used on both sloped or flat roofs and are well worth the cost. Rubber roofing is highly durable and can help owners save on energy costs. The rubber roofing reflects the sun, which cools your home, allowing you to cut expenses on things like air conditioning. Rubber roofing is also inexpensive, with EPDM in particular being one of the least costly roofing materials on the market. Rubber roofs are also naturally impervious to water, thanks to its lack of seams.