Rubber roofing such as EPDM lasts 10 to 50 years. With a name that is difficult to say, ethylene propylene diene monomer synthetic rubber is one of the cheapest roofing materials on the market and the most common commercial flat roof materials.
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The material is a combination of sand, cement, and water. While most people might think of sidewalks and driveway pavement when they think of concrete, concrete is also a roofing material.
Over time, the top gravel layer will show signs of wear and tear, and it can be replaced.Ĭost: $3-$8 per square foot (including labor) Concrete Roofs Photo Credit: Dangphoto2517 / Canva Pro / License As the name suggests, BUR is built of layers of tar and roofing felt topped with several layers of gravel. Known as tar and gravel roofing, this style of roofing has been used for over 100 years, making built-up roofing the oldest type of flat roofing. Built-Up Roofing (BUR) Photo Credit: Baloncici / Canva Pro / LicenseĪs the most common type of flat roofing, built-up roofing is a popular choice for homeowners. Instead, there are many other types of materials used on flat roofs. 10 Types of Flat Roof MaterialsĮven though asphalt shingles are the most common roofing material for pitched roofs, flat roofs cannot have asphalt shingles installed over them. Water sitting on a roof will damage the roofing and cause leaks. If a flat roof were completely flat, this would create a problem with ponding water on the roof. The reason flat roofs are set at a slight angle is to help with drainage. A flat roof is a low-slope roof tilted at less than 10 degrees. Some might assume that a flat roof is completely flat with no angle. Ethylene Propylene Diene Monomer (EPDM).
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