As a vulcanized (thermoset) elastomer, how does EPDM differ from other types of single-plies (i.e., PVC, TPO, Single-ply or non-vulcanized elastomer)?

EPDM membrane is a vulcanized/thermoset membrane that has been fully cured in the manufacturing process prior to shipment and delivery to the job site. With aging, EPDM membrane will not leech or emit hazardous chemicals. Unlike non-vulcanized elastomers that may begin curing in the field once exposed to moisture and heat, EPDM membrane has no shelf life.

Its physical properties remain stable, which makes repairs much easier in the unlikely event of cuts or tears. More.

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