Roof replacement, repair, storm damage, and commercial flat roofs across the Northwest suburbs — plus the gutters, soffit, and fascia that go with them — and estate cedar shake, slate, and copper on the North Shore. Family-owned since Jan Koszyk founded the company in 1996. English and Polish.
Leaders Roofing built its reputation on the materials that define North Shore architecture — the ones that require real expertise, not just a crew and a truck. Cedar from the best mills. Slate sourced by country of origin. Copper detailed by hand. Thirty years of this work on the same streets.
Western red cedar from Watkins, Waldun, and Anbrook. Hand-split and resawn shakes for North Shore estate homes — properly installed to last 30 to 40 years.
Cedar shake roofing →Welsh, Vermont, and Pennsylvania slate for historic restorations. DaVinci, Brava, and EcoStar synthetic for new builds where weight is a constraint.
Slate roofing →Copper step flashing, valleys, and standing-seam panels hand-formed on site. The only material that improves with age — appropriate for the homes in this market.
Copper roofing →Complex rooflines, architecturally significant materials, crews who know how to work on homes where the details matter as much as the membrane beneath them.
Estate roofing →Residential and commercial. Repairs through full replacements. Every project backed by a workmanship warranty and Jan Koszyk's name.
Full tear-off and replacement using systems built for Chicagoland weather. Shingles, flat roof, and commercial.
Leak diagnostics and targeted repairs to extend your roof's life and stop small problems before they get expensive.
Installation, repairs, and cleaning. Good gutters protect everything underneath them — we make sure yours do.
Siding installation and repair for long-term weather protection and better curb appeal.
Flat roof systems, TPO, EPDM, and built-up roofing for commercial properties of all types and sizes.
Professional roof assessments to document condition, flag risks, and give you a clear picture of what's next.
Full roof replacement and repair for residential and commercial properties: architectural shingle, cedar shake, natural and synthetic slate, copper, and commercial flat-roof systems (TPO, EPDM, modified bitumen), plus storm damage work, gutters, and roof inspections. Family-owned since 1996.
Most residential roof replacements run $15,000–$40,000 depending on size, pitch, complexity, and materials, with larger or more complex homes at $40,000–$70,000; commercial replacements typically run $25,000–$75,000. Repairs usually fall between $300 and $10,000. Every estimate is written, line-item, and free.
Based in Mount Prospect, we serve Cook, DuPage, and Lake Counties — the Northwest suburbs, the North Shore, and greater Chicagoland. Estate cedar, slate, and copper work centers on the North Shore communities.
Yes — Illinois Roofing Unlimited License #104.010248, one of the older unlimited licenses in the state, covering residential and commercial work with no size restriction, plus full general liability and workers' compensation coverage.
Yes. Our free roof health check documents your roof's condition with photos and gives you an honest written assessment of remaining life — including when the answer is that your roof is fine and doesn't need us yet.
No pressure, no obligation. Just a straight answer about what your property needs.