EPDM Roofing
Mule-Hide · GenFlex · Johns Manville Certified
The most widely installed commercial roofing system in North America. Best cost-per-square-foot at scale, excellent flexibility through Chicago's freeze-thaw cycles, and NDL warranty coverage on certified installs.
Serving the Chicagoland Tri-State AreaA Synthetic Rubber Membrane With a 50-Year Track Record.
EPDM (Ethylene Propylene Diene Monomer) is a thermoset rubber membrane engineered for commercial flat and low-slope roofs. It resists UV, ozone, and temperature extremes without becoming brittle, and stays flexible at sub-zero temperatures.
A complete EPDM system includes:
- EPDM membrane: black (standard) or white, 45-90 mil
- Insulation: polyiso or EPS to hit R-30ci minimum per Chicago energy code
- Cover board: added impact and puncture resistance
- Adhesives or fasteners: depending on attachment method
- Seam tape & flashings: factory-applied tape, cured rubber details
Three Ways to Attach an EPDM Membrane
EPDM supports more installation methods than any other single-ply. We match the method to the building.
Fully Adhered
Bonded to substrate with approved adhesive. Smooth finished look, strong uplift resistance. Typical for buildings where appearance or wind exposure matters.
Mechanically Fastened
Fasteners and plates along seams. Fastest and most cost-effective, especially on large warehouse and industrial roofs.
Ballasted
Loose-laid membrane held down with stone or pavers. Requires structural capacity. Minimizes membrane penetrations.
Why EPDM Still Dominates Large Flat Roofs
- Cold-weather flexibility: stays pliable through Chicago freeze-thaw cycles
- Proven longevity: 30-40 year service life with routine maintenance
- Lowest cost-per-SF at scale, ideal for 50,000+ SF industrial decks
- Repair-friendly: localized fixes are straightforward
- NDL-eligible: manufacturer warranties up to 30 years
When We Recommend EPDM
Best for large industrial decks, cold-climate flex, and long hold periods.
Active Certifications. NDL Warranty Eligible.
Factory-trained and certified to warrant every install.
Full NDL warranty authority on Mule-Hide EPDM systems.
Certified on GenFlex EPDM systems for commercial and industrial applications.
Certified installer on JM EPDM with Peak Advantage warranty options.
Frequently Asked Questions
EPDM roofs typically last 30 to 40 years with proper installation and routine maintenance. Many well-maintained EPDM systems have exceeded that. NDL manufacturer warranties up to 30 years are available on certified installations.
EPDM is a black rubber membrane with tape-bonded seams and the lowest cost-per-SF at scale. TPO is a white thermoplastic with heat-welded seams and a reflective surface that cuts cooling loads. The right choice depends on building use, energy goals, and hold period. We model cost-per-year for both before any decision.
In many cases, yes. A silicone coating over structurally sound EPDM can extend service life by 10-20 years, add solar reflectance, and defer full replacement cost. The roof must pass an condition inspection with moisture probes first. See Coatings & Restoration.
Yes. EPDM stays flexible at sub-zero temperatures, resisting the cracking that affects less elastic systems during freeze-thaw cycles. It is among the best-suited membranes for Chicagoland's climate.