Statements in this guide are provided in good faith with the expectation that a design professional be consulted. it is the responsibility of the user to establish appropriate safety and health practices. ethylene- propylene rubbers & elastomers ( also called epdm and epm) continue to be one of the most widely used and fastest growing synthetic rubbers having both specialty and general- purpose applications. this document does not purport to address all of the safety problems, if any, associated with its use. 01- 1 roofing system applicability rubbergard epdm membranes 6 table 1. 03- 1 minimum fastener pullout resistance for specific systems 13 table 1. rubber, ethylene- propylene- diene ( epdm) — evaluation procedure warning — users of this document should be familiar with the normal laboratory practice. fully extruded: produces fewer air voids, more uniform thickness and smoother sheets. product selection guide dow’ s nordeltm ethylene propylene diene terpolymers ( epdm) product family features one of the epdm pdf widest range of ethylene content available in the industry. vulcanization process: combines two layers of membrane to produce a fully cross- linked monolithic membrane. these high- pdf quality, virtually gel- free polymers enable improved yields, reduced scrap rates, and unparalleled polymer cleanliness. 03- 2 recommended number of pull- out tests 13 table 1. features and components membrane: nonreinforced, cured epdm ( ethylene propylene diene monomer). 04- 1 allowable fastener and substrate configurations. for 30- year epdm warranties, refer to the rubbergard platinum epdm design guide. 02- 1 back- nailing requirements for sloped roofs 11 table 1.