Thermoset Membranes roofs are “rubberlike” and are actually made of large pieces of synthetic rubber. When welded together, the rubber pieces are chemically bonded, forming a single-layer membrane. When stretched, they will elongate, but will return to their original shape when released.
Included in this category are the following types of membranes:
EPDM (Ehylene Propylene Diene monomer) – Lifespan = 15-20 years.
Hypalon (CSPE) –Lifespan= 15-20 years