Flat Roof

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Flat Roofing

Flat Roofing

Single ply roofing membranes are installed as a single layer on flat or low-sloped roofs. These systems come in large rolls. The most common types of single ply roofing are EPDM, PVC, and TPO.

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Types

Types

EPDM (Ethylene Propylene Diene Monomer)

  • EPDM (sometimes referred to as rubber roofing) is a lightweight synthetic rubber roofing product. EPDM is made up of ethylene and propylene, which are derived from oil and natural gas.
  • EPDM is resistant to hail, wind, and extreme temperatures.
  • This roofing system is also resistant to ozone and UV rays.
  • EPDM is available in black or white. White EPDM reflects heat from the sun, reducing cooling cost.
  • EPDM is available in various thicknesses, up to 90 mils. Seams are sealed together using special tape or adhesive.
  • EPDM roofing can be installed fully adhered, ballasted with stone or pavers, or mechanically fastened with screws and plates.

TPO (Thermoplastic Olefin or Polyolefin)

  • TPO roofing systems have been in use since the 1990’s. This environmentally friendly roofing system is made up of ethylene propylene rubber.
  • TPO is less expensive than PVC. TPO roofing is relatively new and does not yet have the proven track record of PVC.
  • TPO systems are resistant to ozone, UV rays, and chemicals.
  • TPO roofing is usually white, grey, or tan. These systems can reflect heat from the sun, reducing cooling cost. 
  • Seams are hot-air welded together, providing water tight seals.
  • TPO roofing can be installed fully adhered, ballasted with stone or pavers, or mechanically fastened with screws and plates.

PVC (Polyvinyl Chloride)

  • PVC roofing systems have been in use in Europe since the 1960’s and became popular in the United States shortly after. The main ingredients of PVC are ethylene and chlorine, which are derived from salt and natural gas.
  • PVC roofing systems are resistant to chemicals, greases, and oils. This makes these systems ideal for restaurants. 
  • PVC is also resistant to ozone and UV rays.
  • PVC roofing is usually white or grey. These systems can reflect heat from the sun, reducing cooling cost.
  • Seams are hot-air welded together, providing water tight seals.
  • PVC roofing can be installed fully adhered, ballasted with stone or pavers, or mechanically fastened with screws and plates.