Storm damage? Emergency services available 24/7 — Call (224) 202-7770
Reliable, code-compliant commercial roofing for businesses, warehouses, retail centers, and multi-unit properties across Chicago and northeastern Illinois.
Commercial roofs face demands that residential roofs simply don't — larger surface areas, rooftop equipment, higher foot traffic, stricter building codes, and the constant pressure to minimize business downtime during any roofing project. Choosing the wrong contractor can mean leaks, failed inspections, or a roof that fails years ahead of schedule.
IJG Construction LLC brings the same commitment to quality, transparency, and workmanship that has earned us our A+ BBB rating to every commercial project. Whether you need a new flat roof installation, a full membrane replacement, or emergency storm repair on a commercial property, our team has the equipment, training, and materials to deliver results that protect your business.
We work around your schedule to minimize disruption to your operations and provide full documentation for insurance, warranty, and compliance purposes.
Commercial Clients: We serve property managers, business owners, HOAs, retail centers, warehouses, office buildings, and multi-unit residential complexes throughout Chicago and a 100-mile radius across Illinois.
Warehouses & Distribution Centers
Retail Centers & Strip Malls
Office Buildings & Corporate Campuses
Multi-Unit Residential & HOAs
Houses of Worship & Community Buildings
Industrial & Manufacturing Facilities
We install and repair all major commercial roofing systems, recommending the best option for your building type, budget, and long-term goals.
Thermoplastic Polyolefin (TPO) is one of the most popular flat roofing systems for commercial properties. Energy-efficient, highly reflective, and resistant to UV, heat, and chemical exposure — ideal for Illinois's wide temperature swings.
Ethylene Propylene Diene Monomer (EPDM) rubber roofing has a decades-long track record of performance in harsh climates. Flexible in extreme cold, resistant to UV and ozone, and one of the most durable flat roofing options available.
A multi-layer asphalt-based system reinforced with polyester or fiberglass. Modified bitumen offers excellent waterproofing, durability, and compatibility with existing built-up roof systems — a proven choice for flat and low-slope roofs.
Standing seam and corrugated metal roofing systems deliver exceptional longevity (40–70 years), low maintenance, and superior resistance to Illinois wind and hail. An excellent investment for warehouses and industrial buildings.
The traditional "tar and gravel" flat roof system, built-up roofing uses multiple layers of bitumen and reinforcing fabrics for outstanding waterproofing performance. Well-suited for high-traffic roof areas and older commercial buildings.
Extend the life of an existing commercial roof with elastomeric, silicone, or acrylic coatings that seal leaks, reflect UV, and add years to your roof without the cost of full replacement — often at a fraction of tear-off cost.
| Factor | Commercial Roofing | Residential Roofing |
|---|---|---|
| Roof Slope | Typically flat or low-slope — requires membrane systems | Pitched — asphalt shingles most common |
| Drainage Design | Internal drains, scuppers, and gutters engineered for large surface area | Standard gutters and downspouts |
| Rooftop Equipment | HVAC units, vents, skylights, and penetrations require specialized flashing | Fewer penetrations to manage |
| Project Scale | Thousands of square feet — requires more crew, equipment, and scheduling | Typically completed in 1–2 days |
| Code Requirements | Stricter building codes, permits, and third-party inspections | Standard residential permits |
| Business Impact | Work scheduled to minimize disruption to operations | Homeowner inconvenience only |
We conduct a thorough inspection of your existing roof, identify problem areas, and assess drainage, penetrations, and structural condition before recommending any system.
You receive a detailed written proposal specifying roofing system, materials, scope of work, timeline, and cost — no vague estimates or surprise add-ons.
We handle all required permits and coordinate the project timeline around your business operations to minimize downtime and disruption.
Our experienced commercial crews complete the installation using manufacturer-approved techniques, with daily site cleanup and progress updates throughout.
We conduct a comprehensive walkthrough with you upon completion and provide all warranty documentation, photos, and compliance records.
We offer commercial roof maintenance programs to maximize the lifespan of your investment and catch small issues before they become expensive repairs.
Get a free, no-obligation commercial roofing estimate from IJG Construction — serving businesses across Chicago and all of northeastern Illinois.
