Family-owned residential and commercial roofing across Lake County, northwest Cook County, and northern DuPage County. From cedar shake estates in Highland Park and Lake Forest to commercial TPO systems in Elk Grove Village's industrial corridor — local crew, IL licensed, free estimates.
Asphalt architectural, designer shingles, cedar shake, synthetic slate, natural slate, metal. Residential and commercial. Written line-item estimates — no surprises at invoice.
Storm damage, leaks, flashing failures, hail damage assessment. Most repairs run $1,500–$8,000. We'll tell you honestly if replacement makes more sense than repair.
TPO, EPDM, modified bitumen, metal, and silicone coatings for northwest suburb commercial properties. Annual maintenance programs available for property managers.
Post-storm assessments, pre-listing condition reports, annual maintenance checks. Written report with photos. We document what's there, not what we want to sell you.
Leaders Roofing Corp was founded in 1996 by Jan Koszyk and has been headquartered in Mount Prospect ever since. Our crew is local — Cook and Lake County, year-round. We're not a franchise, not a call center that dispatches contractors from two counties over, and not a storm chaser that appears after hail events and disappears when the work dries up.
The northwest Chicago suburbs span a wide range of roofing demands. In northwest Cook County — Arlington Heights, Schaumburg, Elk Grove Village, Mount Prospect, Prospect Heights — the work is a mix of residential replacement and substantial commercial roofing in one of the country's largest industrial park concentrations. In Lake County, the North Shore communities (Highland Park, Lake Forest, Lake Bluff, Glencoe) have estate homes with cedar shake, slate, and copper that require specific expertise. Further west in Lake County, Libertyville, Mundelein, Vernon Hills, and Long Grove have a different character — newer residential and commercial development with its own roofing needs.
We work across all of it. Illinois Roofing Unlimited License #104.010248. Both English and Polish — Mówimy po polsku.
Lake County's proximity to Lake Michigan creates a specific roofing environment — more lake-effect snow, more frequent freeze-thaw cycles, and an elevated ice dam risk compared to inland suburbs. The North Shore communities have a concentration of estate homes with premium roofing materials that require specialized expertise. We've been working Lake County since 1996.
Northwest Cook County is our home territory — Leaders Roofing has been based in Mount Prospect since day one. These are communities with a wide range of housing ages, from postwar subdivisions to newer construction, and a significant commercial roofing market in the communities along I-90 and I-290.
Northern DuPage County — from Clarendon Hills and Hinsdale up through Bloomingdale and Roselle — represents a growing part of our service territory. The commercial corridor along I-355 and the residential communities north of Naperville are areas where we've been expanding our presence.
The northwest suburbs have a higher concentration of specialty roofing work than most markets — largely because of the North Shore estate homes in Lake County and the commercial density in Cook County's industrial corridors. These are the specialty areas we handle regularly:
Highland Park, Lake Forest, Glencoe, Riverwoods, and Long Grove have some of the highest concentrations of cedar shake roofing in the Chicago area. We install new cedar and advise on Class IV architectural alternatives for aging shake roofs.
Custom copper work for North Shore estate homes — standing seam copper sections, bay windows, dormer caps, chimney saddles, valley flashings, and full copper-scope replacements on historic properties.
High-end residential work on properties where the details matter: proper material matching, sensitive landscaping protection, HOA and architectural review coordination, and clear communication through every step.
TPO, EPDM, modified bitumen, and silicone coating systems for the northwest suburbs' commercial base — from Elk Grove Village's industrial parks to Highland Park's Route 41 corridor. Maintenance programs available.
The communities north and east of the lake-effect snow band — Highland Park, Libertyville, Gurnee, Lake Forest, Lake Bluff — see significantly more freeze-thaw cycles per winter than inland suburbs. That means higher ice dam risk, more stress on flashings and valleys, and a shorter effective lifespan on roofing systems that aren't installed with proper ventilation and ice-and-water barrier coverage. When we work on a Lake County roof, we treat ventilation assessment as a standard part of every project, not an optional add-on. See our attic ventilation guide for why this matters.
The premium communities along the lake — Highland Park, Lake Forest, Lake Bluff, Glencoe, Kenilworth — have housing stock that's architecturally distinct from inland subdivisions. Cedar shake and slate roofs are common, many homes are in HOA communities with material and color restrictions, and replacement costs on larger estate homes can range from $50,000 to $300,000+. This work requires different expertise, sourcing relationships, and project management than standard residential roofing. It's work we've been doing on the North Shore for 30 years. Read our cedar shake vs. architectural shingles guide for North Shore homeowners.
The northwest Cook County corridor — especially along I-90 and I-290 — has a significant commercial and industrial real estate base. Elk Grove Village alone contains one of the largest industrial parks in the United States. Commercial flat roofing in this market means TPO and EPDM systems on large warehouse and manufacturing footprints, standing seam metal on commercial buildings, and a meaningful demand for ongoing maintenance programs from property managers who can't afford emergency leak calls on operational facilities.
Northern Illinois has seen several significant documented hail events in recent years, and Lake County in particular has been in the path of systems that produced hail in the 1.5-inch-plus range that causes functional damage to asphalt shingles. After every event, storm chasers flood the affected neighborhoods. We have been working Lake County for 30 years and we don't operate door-to-door — if you've had potential storm damage, call a local contractor for an honest inspection before committing to anyone. See our guide to spotting storm chasers and our roofing warranty guide for what to look for in a legitimate contractor.
Leaders Roofing serves communities throughout Lake County (Highland Park, Libertyville, Lake Forest, Lake Bluff, Barrington, Lake Zurich, Long Grove, Riverwoods, Mundelein, Vernon Hills, Deerfield, Bannockburn), northwest Cook County (Arlington Heights, Mount Prospect, Schaumburg, Elk Grove Village, Prospect Heights, Buffalo Grove, Glenview, Northbrook, Palatine), and northern DuPage County (Clarendon Hills, Hinsdale, Itasca, Bloomingdale, Roselle). If you're in the northwest suburbs and don't see your town listed, call us — we've likely worked in your community.
Yes. Residential and commercial are both core parts of our business. On the residential side, that ranges from standard asphalt shingle replacement in Cook County subdivisions to cedar shake, slate, and copper work on North Shore estates. On the commercial side, we work on TPO, EPDM, modified bitumen, and metal commercial roofing for office, retail, industrial, and institutional properties throughout the northwest suburbs. We don't specialize in one or the other — we've been doing both since 1996.
Northwest suburb pricing varies significantly by community and property type. In northwest Cook County communities like Arlington Heights, Mount Prospect, and Schaumburg, a typical residential replacement runs $15,000 to $40,000 for architectural shingles on a standard single-family home. In Lake County's North Shore communities — Highland Park, Lake Forest, Lake Bluff — larger estate homes with premium material specifications routinely run $40,000 to $150,000+. Commercial flat roofing runs $8 to $14 per square foot installed for TPO and EPDM systems. We provide free, written, line-item estimates — call (847) 312-2727.
We're local. Leaders Roofing Corp is headquartered in Mount Prospect and has been based here since 1996. Our crew lives and works in Cook and Lake Counties. We're not a franchise operation and we don't fly in crews after storms. When you call after a hail event in Libertyville or Highland Park, you're talking to a contractor who's been maintaining roofs in your county for 30 years — not a storm chaser who arrived last week.
Yes. Insurance claim work is a significant part of what we do, particularly in Lake County where documented hail events have been more frequent. We attend adjuster inspections to document damage and ensure the approved scope is complete, work through the supplement process when items are missed, and coordinate with all major carriers. We do not charge extra to attend adjuster inspections or assist with the claim documentation — it's part of our service to homeowners dealing with storm damage. We do not sign assignment of benefits agreements.
For most northwest Cook County homes, a Class IV impact-resistant architectural shingle — GAF Timberline HDZ, Owens Corning Duration Storm, or CertainTeed Landmark IR — delivers the best combination of lifespan, hail protection, and value. In Lake County communities where cedar shake has been the traditional material and HOA character matters, Class IV designer shingles like CertainTeed Grand Manor or GAF Camelot II replicate the dimensional profile at a fraction of cedar's cost. For commercial flat roofs, TPO is the dominant choice for new work. On estate homes with historic material requirements, we work with natural slate, copper, and properly sourced cedar.
No pressure, no obligation. Just a straight answer about what your property needs.