Commercial Roofing Contractors

Commercial roofing contractors install and service low-slope membrane systems — TPO, EPDM, PVC, modified bitumen, built-up roofing — and metal standing-seam on warehouses, retail, schools, multifamily, and industrial buildings. They handle tear-off, recover, insulation, decking, and the manufacturer warranty registration that residential crews are not certified to issue.

Different membrane chemistry, different fastening, different code requirements, and different insurance. Commercial roofers carry higher liability limits, run NDL (no-dollar-limit) manufacturer warranties, work to wind-uplift and FM Global standards, and use mechanically-attached, ballasted, or fully-adhered systems instead of nail-down shingles.

For commercial roofing specialists in Chicago IL, look for an Illinois-licensed contractor (state plumbing/roofing license #) that is a Carlisle SynTec Authorized Applicator, GAF Master Select, or Firestone Red Shield specialist. Confirm Cook County registration plus current general liability of $5M+ and workers' compensation.

TPO and EPDM installs in Illinois run $7–$13 per sq ft for tear-off and replacement on roofs 10,000–100,000 sq ft. PVC: $9–$16 per sq ft. Modified bitumen: $6–$11 per sq ft. Pricing varies with insulation R-value, deck condition, parapet detailing, and crane access.

Yes. Industrial roofing Illinois work — distribution centers in Will, DuPage, Cook, Kane, and Lake County — typically uses mechanically-attached 60-mil TPO with poly-iso insulation, or standing-seam metal on pre-engineered buildings. Most reputable industrial roofers in Illinois carry FM Global approvals and full insurance documentation for general contractors.

Carlisle SynTec Authorized Applicator, GAF Master Select, Firestone Red Shield, Johns Manville Peak Advantage, Sika Sarnafil At-The-Top, and Versico Coatings Star. These certifications unlock NDL (no-dollar-limit) 20–30 year manufacturer warranties that uncertified contractors cannot offer.

TPO and PVC: 20–30 years properly installed. EPDM: 25–35 years. Modified bitumen: 15–25 years. Built-up gravel: 20–30 years. Standing-seam metal: 40–60 years. Real lifespan depends on insulation drying potential, drainage, and traffic protection at HVAC service paths.

Recover (install new membrane over the existing system) saves 25–40% vs. tear-off but is only legal where local code permits two membrane layers, the existing membrane is dry, and the structure can carry the added dead load. A licensed commercial roofer should pull cores and provide a moisture survey before recommending either approach.

Yes — hail, wind, and tree-impact claims on commercial roofs are routine. Reputable commercial roofers provide free post-storm inspections, supply a Haag-certified damage report, and meet your carrier's adjuster on site to scope the claim before any work begins.

Membrane manufacturer NDL warranty of 20–30 years (Carlisle, GAF, Firestone, Johns Manville, Sika) plus 2–10 years workmanship from the installing contractor. Walk away from any commercial roofing company offering only a standard limited warranty on a multi-million-dollar reroof.