TPO

Short for thermoplastic polyolefin, TPO is a single-ply roofing membrane  that offers excellent performance at a cost-effective price.  Heat-welded seams provide superior strength. TPO's long-term heat, UV,  and natural fungal resistance, plus flexibility without need for  plasticizers also make TPO a reliable low-slope roofing system.

In  the 20+ years that TPO has been in the field, it’s become one the most  popular products used for low-slope roofing. Over 1 billion square feet  are installed annually, making up over 50% of single-ply roofs being  installed today.