Roofing Membranes – Types and Uses of Roofing Membranes

Used on flat or nearly flat roofs, roofing membranes are a type of roofing system for buildings. They are usually constructed out of waterproof materials such as synthetic rubber, PVC, or modified bitumen, and can be used to prevent leaks as well as move excess water off of the roof. They are usually seen in commercial buildings, although they can also be used in residential homes, as long as the roof is flat. If you have a flat roof and are in need of a roofing membrane, it’s a good idea to first take a closer look at what all the different types of options are on the market today.

One of the most popular types of roofing membranes is synthetic rubber. These types of membranes are constructed out of large, flat pieces of rubber. These large pieces can then be welded together at the seams, to form a continuous sheet to cover the roof. The thickness of the finished roof will generally fall in the range of .75 to 1.5 mm.  Thermoplastic membranes are another type of membrane that you may choose from. These are similar to synthetic rubber, but there is a difference in the seams. These seams are bonded together with solvents or heat, rather than welded together.

Another option in the world of roofing membranes is modified bitumen. This is a type of roofing that is constructed from asphalt as well as other solvents or modifiers. In many cases, extreme heat must be applied to put these into place, making them dangerous and flammable. In the past, roofers would place asphalt and gravel on top of flat roofs. All three of these newer models of membranes are considered to be superior to the asphalt method, because they form a watertight seal and are safer to install.

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It’s also considered to be easier to repair the newer forms of roofing membranes, because leaks are easier to spot and can be more readily patched up. They are designed to resist expansion and contraction, and are able to withstand the sun’s UV rays. It’s also important to note that because they have strong seams or no seams at all, they can expand and contract without causing any breaks in the material, allowing them to breathe with the building. If you are thinking about having a new roofing membrane installed, it’s best to speak with a qualified contractor about what the best options are for your needs.

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