Hi Joan,
Thank you for your interest in Craft-Bilt's polycarbonate roof systems.
Yes, it is a polycarbonate material. And you can purchase it directly from Craft-Bilt Materials.
Pease visit http://craft-bilt.com/patio-covers/polycarbonate-roof/ for more information. Or give us a call 1800 668 6430. We are happy to help you with any question regarding our polycarbonate roof systems.
Happy Renovations,
Craft-Bilt Team