Different Types of Flat Roofing Systems Flat roofing systems are common sights on buildings like schools, factories, shopping malls and other commercial and industrial places. For certain applications, the flat roof just makes more sense and is easier to install. Here are some different types of flat roofing systems and some important facts and features. Ethylene Propylene Diene Monomer Ethylene Propylene Diene Monomer is a flat roofing system that’s composed of a rubber membrane in one single ply. This type of flat roof is relatively low cost and works well for large or small industrial and commercial roofing projects. An Ethylene Propylene Diene Monomer roof can be loose laid with gravel , mechanically fastened with no heat or applied with a fully-adhered glue system. The Ethylene Propylene Diene Monomer flat roof uses fewer petroleum based products, results in lower emissions and less waste ends up in the landfill, giving it ‘environmentally friendly’ status. Some other features include long term durability in any climate, reduced life cycle costs and lower heating and cooling costs. Built-Up Roofing (BUR) - Tar and Gravel A Built-Up Roofing flat roof is a four-ply system that consists of an asphaltbased roofing membrane along with fiberglass felts and tar that’s perfect for re-roofing jobs. This type of roof is able to tie in with an existing builtup roof and is a great choice if you need to add new or additional insulation.
Thermo-plastic Polyolefin Roofing Membranes This style is made up of a plastic membrane and an affordable single ply that’s perfect for larger, commercial roofing projects. Thermo-plastic Polyolefin Roofing Membranes may be applied with either a mechanicallyfastened system or fully-adhered glue system that requires no heat. This is also an environmentally friendly roofing system, as the emissions are lower, the landfill waste is lower and fewer petroleum-based products are used. They also have a reflective design that helps lower energy bills. Modified Bitumen Modified Bitumen is a two-ply flat roofing system that consists of two layers of rubber, base membrane and a granulated cap. This kind of system works best for smaller roofing projects, roofs that are used as outdoor living spaces or roofs that see a lot of traffic. A Modified Bitumen flat roof doesn’t use much ground equipment and can be applied with glue, fastened with asphalt or applied thermally. Do I Need a Slope? Sometimes, the flat roofing system you choose to have installed requires a slope. Having a slope on a flat roof might seem to take away from the whole purpose of the roof being flat, but in some cases it’s a necessary modification. If the flat roof you have in place causes water to collect and pond for an extended period of time, then sloping is probably a wise choice. A good rule to follow is the water on the roof evaporates inside of 72 hours, then adding a slope isn’t necessary. However, if there is water collects and ponds for longer than 72 hours, and it isn’t possible to add extra drainage to the roof, then sloping is a must. You might need to add a slope to take
advantage of a manufacturer’s extended warranty no matter how long the water stays on the roof after it rains. Flat Roof Benefits & Considerations While a flat roof can be less stable than a sloped roof when there is a large space to cover, there are some definite benefits to having a flat roof system installed. Some of the biggest advantages of a flat roof include: They are easier to climb on and inspect than a sloped roof. The ‘flat’ aspect creates a much safer situation if you have to go up on the roof for any reason. They cost less to install and to re-coat than a sloped roof. If you choose the right kind of flat roofing system for your purposes and have it professionally installed, you should have no trouble with it at all. Just follow the instructions of the manufacturer, and perform regular maintenance, and it will be around for a long time. http://essentialflatroofing.com/ Essential Flat Roofing Services
Published on Apr 27, 2013
The best in flat roof repair and maintenance Essential Flat Roofing offers clients a trusted name and quality work.