Commercial Roofing That Works As Hard As You Do
Durable, efficient roofing solutions designed to protect your business — delivered on time and within budget.
At Kosarek Construction Company, we understand the unique demands of commercial properties. Whether you’re managing a warehouse, office building, retail center, or multi-unit complex, your roof plays a critical role in protecting operations, minimizing downtime, and maintaining safety.
We’re Providing Quality
Roofing Services
We specialize in high-performance roofing systems tailored for flat and low-slope roofs — all installed by our certified crews with minimal disruption to your business.
Commercial Roofing Systems We Install:
- EPDM (Thermoset) Roof Membrane
- Thermoplastic (PVC & TPO) Roof Membrane
- Modified Bitumen
- Silicone Roof Coatings
- Metal Roofing Systems
New Construction & Replacements:
Whether you’re building from the ground up or replacing a worn-out system, Kosarek Construction delivers:
- Detailed project planning and timelines
- Roofing material sourcing and logistics
- Precision installation backed by warranties
- Coordination with architects and GCs when needed
Repairs & Preventative Maintenance
Avoid expensive surprises with our commercial roofing maintenance plans. We inspect, repair, and maintain your system to:
- Extend roof life
- Catch small issues before they become big ones
- Ensure compliance with building codes and warranty terms
Insurance Claims Support:
Storm damage or water infiltration can bring operations to a halt. We’re not just contractors — we’re licensed Public Adjusters in Illinois, and we handle every step of the insurance claim process for you:
- Damage assessment and documentation
- Meeting with insurance adjusters
- Filing paperwork and negotiating coverage
- Final repairs or full replacements
Why Businesses Trust Kosarek:
- 20+ Years of Roofing Experience
- OSHA-Compliant Crews
- Fully Licensed, Bonded & Insured
- NRCA & NFIB Member
- Transparent Bids & Reliable Timelines
- Free Estimates and Onsite Consultations
Your roof is your first line of defense.
Let our commercial roofing experts protect your property and your bottom line.