Many people, when thinking about roofing material, think about traditional asphalt shingles or slate roofing material. These two roofing materials are really at two ends of a spectrum of roofing material choices that are on the market today, depending on the type of roof that is being redone.
For pitched roofs, there are cedar shakes, compositional shingles (asphalt), dimensional shingles, tile, metal, slate and synthetic. These are usually residential roofs or businesses in a high rain or snow climate. For flat roofs, those that are under three inches rise to twelve inches run, there are other materials that are used, with a few overlaps. Flat roofing material is usually tar and gravel, modified bitumen, roll, metal, and also EPDM rubber and PVC membrane roofing materials.
Strength and Value
EPDM or ethylene propylene diene monomer rubber roofing material costs more than asphalt roofing materials, but is an average price for the market. This type of roofing material is applied to the flat roof in a single layer, rather than the multiple messy layers required for the more standard built-up roofs of tar and asphalt or modified bitumen. In addition, the EPDM rubber roofing material lasts longer than those other roofing materials, usually five to ten years longer due to the durability of the rubber.
It is important to find a roofing contractor that is familiar with roofing with EPDM rubber roofing materials since it requires that a more rigid insulation is used in comparison to other types of roofs, such as metal, where the insulation is often included in the metal panels. EPDM rubber roofing material is UV resistant, so it helps in hotter climates by deflecting some of the sun’s rays. It is also more wind and hail resistant than the tar and asphalt and modified bitumen roofs, so it lasts longer without repairs in that way as well.
PVC membrane rubber roofing material, or polyvinyl chloride, is another heat deflecting roofing material. It costs about the same as the EPDM rubber roofing material and helps to save cost on air conditioning bills. PVC membrane is also heated so that the seams are eliminated, thus making the material more weather resistant, adding to the life of the roofing material. These roofs usually last up to twenty-five to thirty years, depending on the installation. Both of these types of rubber roofing material are sturdier and cleaner than the other types of flat roof materials, which is a benefit to construction teams, making it easier to install and clean up after it is finished.