HomeSingle Ply Roofs
Single Ply Roofs
The most commonly used single ply roofing systems are TPO, EPDM and PVC. By their very description they are composed of a 1-ply membrane that is mechanically fastened, fully adhered or ballasted. Membranes are usually applied over an insulation board with a vapour barrier and underlying deck. In some instances a vapour barrier is excluded and the membrane may also be applied directly to a proper deck substrate. These membranes are known for their reliability and environmental benefits. As all single ply membranes do not require the use of open flame application for their installation, they significantly reduce the risk of fires related to roof construction.TPO
Thermoplastic Polyolefin single-ply roofing. This roofing material can be fully adhered, mechanically fastened, or ballasted. TPO seam strengths are reported to be three to four times higher than EPDM roofing systems. This is a popular choice for "Green" building. It is available in white, grey, and black. Using white roof material helps reduce the "heat island effect" and solar heat gain in the building. In the past decade, TPO roofing has gained popularity among architects, consultants, developers and building owners due to their quality and reliability.EPDM
Ethylene Propylene Diene Monomer is a synthetic rubber most commonly used in single-ply roofing because it is readily available and relatively simple to apply. It is a low cost membrane.Typically, there are three installation methods. Ballasted at 1,000 lbs/sq or 10 lbs/sq.ft. with large round stones. Mechanically attached is another method and is suitable in some applications where wind velocities are not usually high. Fully adhered is the most expensive installation method but proves to give the longest performance of the three methods.
PVC
Polyvinyl Chloride (PVC) membrane roofing is also known as vinyl roofing. Thermoplastic PVC roofing is extremely strong, as its heat-welded seams form a permanent, watertight bond that is stronger than the membrane itself. PVC has been sold for commercial roofing use for more than 40 years.PVC roofs provide an energy-efficient roof with the application of white coloured membranes.
PVC membranes can also be used in waterproofing applications for roofing. This is a common technique used in association with green, or planted, roofs.