Project Scope: RSS Evansville worked with McCarthy on a two-month roof project for Oak Ridge National Laboratory in Tennessee. The project involved a full tear off and re-roof on a sloped 50,000 sq. ft. roof. RSS crews installed a Sarnafil PVC roofing membrane, a product manufactured with the highest NSF/ANSI 347 sustainability rating. This was a complicated job due to the strict regulations required by the nuclear lab, in turn, making the design of the roof membrane critical.