Carlisle’s Sure-Flex PVC is an advanced-formula, heat-weldable PVC 
membrane that is designed for long-term weatherability and performance. 
The physical properties of the membrane are enhanced by a tenacious, anti-
wicking, weft-inserted polyester fabric that is encapsulated by thick PVC-
based top and bottom plies. The membrane’s smooth surfaces facilitate a 
permanent weld for a consistent, watertight, monolithic roof assembly.