“EPDM roof membrane” means a prefabricated single sheet of elastomeric material composed of ethylene propylenediene monomer (EPDM) that is field-applied to the roof of a building using one layer of membrane material.

Source. (See Revision Note at chapter heading for Env-A 1200) #9933, eff 6-1-11; ss by #12899, eff 10-17-19