TPO Vs. PVC Membrane Roofing

PVC stands for Polyvinyl Chloride, a roofing membrane known for its excellent weatherability and flame-retardant characteristics.

TPO, or Thermoplastic Polyolefin, is a single-ply membrane with excellent weather resistance, durability, and strength.

Depending on your specific needs, either one of these materials could be the perfect choice for your commercial flat roofing project.

 
Photo courtesy of IB roof systems

PVC Membrane Roofs

MSR is an authorized installer of IB Membrane Roofing

 

PVC roofing materials are also commonly used on low-slope roofs.

PVC roofing material comprises two layers of PVC with a polyester reinforcement scrim in between the layers. The top layer contains additives that make the membrane UV resistant. The bottom layer is typically darker and contains plasticizers to increase the material’s flexibility. These plasticizers make installation easier.

PVC seams are heat welded together. PVC membranes are waterproof, but the surface is slippery when wet.

 
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TPO Membrane Roofing

MSR Subcontractors are authorized installers of Carlisle Membrane Roofing

The most common roofing material for low-slope roofs is TPO. 

TPO is a single-ply membrane system composed of polypropylene and ethylene-propylene rubber. The TPO sheets are reinforced with a polyester mat and contain UV light inhibitors, pigments, flame retarders, and biocides (that help deter mold, bacteria, rodents, and insects).

The seams are heat welded together, providing a strong bond between adjoining sheets. TPO sheets can be mechanically attached, adhered, or ballasted.

The material is waterproof, but it is slippery when wet.

 

TPO System Options

  • With membranes up to 80 mils thick and industry leading warranties up to 30 years, Carlisle's TPO membrane provides enhanced long-term weathering characteristics

  • With thicker membranes, Carlisle's TPO is able to withstand higher temperatures and UV rays - keeping buildings cool in the summer, with roofing materials that last

  • Carlisle TPO membrane is available in three standard colors and five specialty colors, which is more than any other manufacturer provides

  • Carlisle's OctaGaurd XT weathering package means Carlisle TPO is able to withstand higher temperatures, a variety of weather, and UV rays and the heat that comes with them