View of an older fully-adhered EPDM roof that has been patched in several places.

Applying adhesive to EPDM sheets during the installation of a fully-adhered EPDM roof.

Useful Links:

1. General: See this in-depth general article about various roof systems on the Whole Building Design Guide site, which is maintained by the National Institute of Building Sciences.

2. General: For a decent general discussion of EPDM as a material, see the Wikipedia EPDM page. Not much information specific to EPDM roofing, though.

3. General: The EPDM Roofing Association has thorough and accurate information about EPDM roofing at this location (see the menu on the left side of the page for particular aspects of EPDM roofs). Just remember that this is an industry association that was formed with the purpose of providing "data documenting the many benefits of EPDM roofing systems" (quoted from their website).

4. General: EPDM roofing industry news can be found on the EPDM Roofing Association website.

5. Building Codes: "R905.12 Thermoset Single-Ply Roofing" from the 2015 International Residential Code and "1507.12 Thermoset Single-Ply Roofing" from the 2018 International Building Code. Both available on the UpCodes website.

6. Chemical Compatibility of EPDM: See this chart for a long list of chemicals and whether you can expect them to damage EPDM. Note that EPDM roof seam adhesive and semi-cured or uncured EPDM flashings may be affected differently than fully-cured EPDM field material. Chart is made available by Mykin Inc.

7. Hail Damage: “Comparative Performance of EPDM Rubber Roofing Membrane as Protection against Hail Damage” is worth a look. Good pictures; also pictures of hail damage to other roof types, not just EPDM. Available on the EPDM Roofing Association website.

8. Inspection of EPDM roof systems: ROOFER: Membrane and Flashing Condition Indexes for Single-Ply Membrane Roofs - Inspection and Distress Manual is an extremely detailed and valuable resource put together by the US Army Corps of Engineers' Engineer Research and Development Center. Available for download at the Defense Technical Information Center website.

9. Safety: See this material safety data sheet for health and safety information about EPDM at the Carlisle Syntec website. This is only an example and other products and brands may be different.

10. Technical: EPDM Roof Construction Details: An extensive list of easy-to-view details is provided on the GenFlex website.

11. Technical: See this product data sheet for the technical characteristics of EPDM roofing at the Johns Manville website. This is only an example and other products and brands may be different.

12. Technical: Ballasted EPDM, what is it? See this page on the Carlisle Syntec website.

13. Technical: See Carlisle’s Fully-Adhered EPDM page.

14. Technical: See Carlisle’s Mechanically-Attached EPDM.

15. Manufacturers: See this list EPDM roofing manufacturers.