Many commercial buildings use flat roofing because it makes it easier to access and maintain than other types of roofing. However, there are different systems available that you may know about. Ask your commercial roofing contractors about the following three flat-roof types if they apply for your purposes, advises Jaco Roofing.
The most common type of commercial flat roofing is the asphalt or built-up roof. As you can imagine, it is made of hot asphalt, usually coated with gravel. However, some contractors use materials other than asphalt because they do not require a gravel coat. The advantage of built-up roofing is the low cost and durability.
It is important to have a professional put in the asphalt or similar material because it can be hard to do a proper sealing. It is also important to remember that a built-up roof is heavy, so the support has to be enough to bear the weight.
TheA second type of flat roofing is thin blocks of synthetic rubber, called ethylene propylene diene monomer (EPDM) rubber. These blocks are welded to form a solid membrane. The rubber is It is resistant to exposure to the sun or rain, and it is lighter than asphalt. It lasts a long time with proper maintenance.
TPO, or thermoplastic polyolefin, is a plastic material used for commercial flat roofing. Some contractors use PVC instead, but TPO is more common. TPO comes in sheets and is glued directly on the roof structure. TPO reflects UV rays instead of absorbing them, so the material keeps cool and lasts longer. It is also flame retardant. TPO is the most cost effective flat roofing system.
There are a few more types of flat roofing, but the above three are the most common. The type you choose will depend on your location and the structure of your building. If you are not sure what you need, ask several contractors for advice to make sure you are choosing the right one.