TPO & PVC Roofing Membranes

• Cyclical membrane fatigue resistance
• High resistance to ozone weathering and abrasion
• Thermal shock durability
• Ultraviolet radiation resistance
• Very high wind uplift resistance - up to I-120 Factory Mutual rating
• Ease and speed of application without special tools
• Cold applied, non-flammable adhesive system

MORE ABOUT TPO ROOFING:

TPO membranes are single-ply roof membranes constructed from ethylene propylene rubber. They are designed to combine the durability of rubber with the proven performance of hot-air weldable seams. They have been tested as having excellent resistance to ozone, are algae-resistant, environmentally friendly and safe to install.

TPO is highly resistant to tears, impacts, and punctures with good flexibility to allow for building movement. TPO's are available in white, light gray, and black with thicknesses of either 45 mils (.045"), 60 mils (.060") and 80 mils (.080"). The width of the membrane depends on the manufacturer but they usually come in widths of 4, 6, 8, 10 and are one-hundred feet in length.

TPO membranes are installed fully-adhered, mechanically-attached or ballasted. Fully-adhered means that the roof is "glued" to the substrate using a special adhesive. What actually happens is the glue creates a chemical bond with the membrane. Ballasted simply means the membrane is loose laid over the top of the roof, sealed at all penetrations and around the perimeter, and then a ballast is put on it to hold it in place. Ballast usually consists of smooth, round, river rock 2" - 3" in diameter and is applied at a rate of 1,000 to 1,200 pounds per roof square (100 sq. ft.). Sometimes concrete pavers are used in their place. These average 20 pounds per square foot. Mechanically-attached membranes are those that use some type of special screw-type fastener to secure it. The type of fastener will depend on the type of substrate but all fasteners are generally screw-type fasteners.