Commercial Roofing for North Shore Chicago Businesses

Commercial roofing demands a different set of skills, materials, and project management capabilities than residential work. Flat and low-slope roofs require membrane systems engineered specifically for their geometry — water does not shed from them the way it does from a pitched residential roof, so the roofing system must be waterproof by design rather than by gravity. IToch Roofing has been installing and maintaining commercial roofing systems across the North Shore for more than 25 years, serving office parks, retail centers, industrial facilities, multi-unit residential buildings, and mixed-use properties.

We install three primary commercial membrane systems, each with distinct advantages. TPO (Thermoplastic Polyolefin) is the most widely specified commercial membrane today because of its strong combination of reflectivity, durability, and cost-effectiveness. A white TPO roof reflects solar heat, which can meaningfully reduce cooling costs in summer — a significant advantage for commercial buildings with large roof areas. TPO membranes are heat-welded at the seams, creating bonds that are often stronger than the membrane itself when installed correctly. We carry TPO in multiple thicknesses to match the performance requirements and budget of each project.

EPDM (Ethylene Propylene Diene Monomer) is a rubber membrane that has been the gold standard in commercial flat roofing for decades. It is exceptionally resistant to weathering, ozone, and ultraviolet radiation, and it handles thermal movement well — an important quality in the Chicago area, where rooftop temperatures can swing 100°F or more between a January night and a July afternoon. EPDM systems can be fully adhered, mechanically fastened, or ballasted, giving us flexibility in matching the system to your building's structural characteristics.

Modified bitumen is an asphalt-based system reinforced with either APP (atactic polypropylene) or SBS (styrene-butadiene-styrene) polymers. It is particularly well suited for roofs with complex geometry, heavy foot traffic, or rooftop equipment — situations where a membrane needs to withstand mechanical abuse as well as weather. Modified bitumen can be torch-applied, cold-applied, or self-adhered, and it integrates well with existing built-up roofing systems for recover or overlay projects.

We understand that a commercial roofing project is a disruption to your business. We schedule work to minimize interference with your operations, communicate clearly about timelines and access requirements, and work efficiently to complete projects on schedule. Our project management process includes pre-construction coordination, daily progress communication, and a documented handoff at completion with all warranty materials.

IToch Roofing is fully licensed and insured for commercial work and can provide certificates of insurance, evidence of workers compensation coverage, and licensing documentation to satisfy landlord, lender, or municipality requirements. We serve commercial clients throughout the North Shore and northern Chicago suburbs. Call 224-619-5570 or request a free estimate online.