Thermoplastic Olefin (TPO)
TPO membranes are produced by calendering with lamination, extrusion with lamination, or extrusion-coating techniques. The sheets are a blend of polypropylene and ethylene propylene polymers and usually are reinforced with polyester. It also contain colorant, flame retardants, UV absorbers and other proprietary substances to achieve desired physical properties.
- Sheet widths range from 6 feet to 12 feet wide
- Sheets are typically 40 mils to 100 mils thick
- Seams are sealed by heat welded with hot air
- The most common color is white but other colors are available
With a lifetime average solar reflectance of 65%, EverGuardR and Freedom™ TPO and PVC Membranes can reduce the surface temperature of your roof by as much as 60°F (versus a typical black roof).** This can translate into big savings on utility costs over the life of the roof—as much as $30,000 or more, depending on where your facility is located. More and more facility owners are asking themselves, “Why get saddled with an energy-wasting black roof when I can install an energy-efficient EverGuardR or Freedom™ roof instead?”