There are three main types of roofing material used on RV roofs. Their short-form names are EPDM, TPO, and PVC, referring to the type of compound that they are made from. Each has advantages and disadvantages.
EPDM stands for Ethylene Propylene Diene Monomer, a synthetic rubber roof membrane. In the RV industry, it is used for roofing and an EPDM roof is commonly referred to as a "rubber roof". An EPDM membrane has excellent resistance to environmental factors such as Ozone, UV and general weathering, but it is important to keep EPDM rubber roofing clean and maintained.
Repair cuts in the rubber immediately and inspect your roof every spring and fall. Reseal any areas of roof sealant that are cracked or have broken away. Being diligent in these inspections can save
Another roof type common in the RV industry is TPO (thermoplastic polyolefin), a single-ply roofing membrane, The name is a bit misleading, because rather than plastic that it appears to be, TPO roofs are actually one of a few different types of rubber. They are usually a blend of polypropylene and ethylene-propylene rubber make up the TPO membrane. A key benefit to TPO roofing membranes is that they are generally a lower cost than EPDM roofing membranes, and easier to apply and work with. A TPO roof system will generally be about half the cost of an EPDM roof.
A PVC roof is a premium single-ply roofing membrane that costs more than an EPDM roof. A PVC roof features hot-air welded seams that make the membrane pliable and watertight under a variety of extreme weather conditions. This gives them a longevity advantage over an RV rubber roof..