Pro Exteriors installs, repairs, and maintains commercial EPDM systems across roofs of every scale — from 5,000 sq ft retail strip centers to 500,000 sq ft distribution facilities — backed by 30-year manufacturer warranties from Carlisle SynTec and Versico on qualifying projects. The benefits cards above cover what EPDM is and why it earns its spec on hard-climate buildings. The deeper editorial below covers how the system actually goes together — the technical and operational detail procurement officers need to evaluate a real proposal.
“EPDM is the only single-ply system where the warranty paperwork is harder to win than the install. Without manufacturer certification, the 30-year coverage doesn’t register — and most contractors don’t tell you that.”
— [REPRESENTATIVE — NOT YET SOURCED]. Replace with sourced Pro Exteriors testimonial or industry-association citation before launch.
What EPDM Roofing Actually Involves
EPDM (Ethylene Propylene Diene Monomer) is a synthetic rubber compound formed into single-ply membrane sheets at thicknesses ranging from 45 to 90 mils. Pro Exteriors specifies 60-mil as the standard for general commercial projects and 80-mil for roofs with significant rooftop foot traffic, hail-belt exposure, or elevated wind-uplift requirements. We source primarily from Carlisle SynTec and Versico — both publish detailed tensile strength, elongation, and UV resistance data that we use to write project-specific specifications.
EPDM membrane thickness — when to spec which
| Thickness | Best for | Service life | Cost premium vs. 45-mil |
|---|---|---|---|
| 45-mil | Light-traffic roofs, low-budget retrofits | 18–22 years | baseline |
| 60-mil (Pro Exteriors standard) | General commercial, moderate hail exposure | 25–30 years | +15–20% |
| 80-mil | High-traffic, hail-belt, elevated wind zones | 28–35+ years | +30–40% |
| 90-mil | Specialty applications, fully ballasted | 30+ years | +45–55% |
Attachment method is the next major design choice. Fully adhered systems bond the membrane directly to the insulation with bonding adhesive — strongest wind resistance, ideal for high-wind environments like Dallas-Fort Worth and Denver, highest installed cost. Mechanically attached systems use fasteners and plates driven through the membrane to the structural deck — faster install, cost-effective for most general commercial applications. Ballasted systems use stone or pavers to hold the membrane in place — viable over concrete structures with adequate dead-load capacity, less common in our primary regions.
Insulation specification is inseparable from the membrane. Polyisocyanurate (polyiso) is the standard for most EPDM assemblies, paired with a high-density coverboard (polyiso, gypsum, or wood fiber) directly under the membrane. The coverboard improves puncture resistance from above and provides a stable substrate for adhesion. We pull cores during the pre-install assessment to verify existing insulation R-value and detect any moisture saturation — EPDM installed over wet insulation will fail early, and we don’t take that gamble.
Flashing is where most EPDM roofs actually fail. Penetrations — HVAC curbs, vents, drains, parapet wall transitions — accumulate stress from thermal cycling, UV exposure, and incidental rooftop traffic. Pro Exteriors specifies Carlisle SynTec and Versico prefabricated flashing accessories wherever possible (factory-cured, dimensionally consistent, fewer field seams) and uses two-layer detail at every penetration: an uncured peel-and-stick base sheet topped by a field-bonded cap sheet, with photographic documentation of every detail.
How We Serve Dallas-Fort Worth and the Regional Markets
Pro Exteriors is headquartered in Richardson, Texas — within 30 minutes of any commercial roofing site in the DFW metroplex, including Frisco, McKinney, and Allen on the north side; Arlington, Grand Prairie, and Irving on the west; Garland, Mesquite, and Rockwall on the east. DFW’s combination of severe hail events and 100°F-to-sub-freezing seasonal temperature swings means EPDM membrane thickness and attachment method get specified more conservatively here than in milder climates. Our crews install and repair EPDM here every week — climate fluency comes from direct field experience, not from a regional best-practices manual.
We also operate regional offices in Denver, CO, Wichita, KS, Kansas City, MO, Atlanta, GA, and Pensacola, FL. Each market has its own project manager and a dedicated full-time crew certified on EPDM systems. Denver installs lean toward 80-mil fully-adhered assemblies because of high winds and hail at elevation. Atlanta projects often involve overlay installs over existing modified bitumen — substrate prep methodology there is specific, and our crews carry the certifications to execute it cleanly. For the broader commercial flat-roof picture, see our commercial flat-roof systems overview.
