2,905 roofing listings are recorded across 393 Illinois cities and towns in this directory; 218 of those places have enough listings to carry a page of their own, and the rest are reachable through search.
Illinois licenses roofing contractors at state level; the class that covers roofing is Two classes. LIMITED roofing license — "a license made available to contractors whose roofing business is limited to roofing residential properties consisting of 8 units or less" (225 ILCS 335/2(h)). UNLIMITED roofing license — "a license made available to contractors whose roofing business is unlimited in nature and includes roofing on residential, commercial, and industrial properties" (225 ILCS 335/2(i)). The license is issued to the business, which must designate a qualifying party who passes the state examination and is an actively employed, W-2 supervisor of roofing operations.. The Illinois roofing license page sets out who issues it, what it costs to hold and how to verify one. A credential can be checked on the authority's own site.
Illinois's peak severe-weather season: April–July. The roofing work it generates comes from straight-line wind, hail, tornadoes and snow load and winter storms. The Illinois storm center lists any National Weather Service alert active now.NOAA's Storm Events Database holds 11,307 county-level severe-weather events across Illinois between 2016 and 2026, including 959 tornadoes and 2,527 hail reports of 1.00 in or larger; the heaviest county record is Cook County's, with 864 events. The most recent event in the state meeting the dataset's severity definition was a hail report measuring 2.00 in (Baseball) in Clinton County on August 22, 2026, a preliminary report not yet through NOAA's quality-control review.
Roofing in Illinois: questions answered from the data
How many roofing contractors are listed in Illinois?
2,905 roofing listings are recorded across 393 Illinois cities and towns in this directory; 218 of those places have enough listings to carry a page of their own, and the rest are reachable through search. A listing is a location record; the ranked lists on this site collapse a company that serves many towns to one card, so the number of companies shown is lower than the number of listings counted.
Which Illinois cities have the most roofing contractors?
By listing count, Chicago (641), Naperville (83), Springfield (79), Aurora (64) and Joliet (52) lead the state. Every Illinois place with listings is linked in the city index further down this page.
Does Illinois require a roofing license?
Yes. Illinois licenses roofing contractors at state level; the class that covers roofing is Two classes. LIMITED roofing license — "a license made available to contractors whose roofing business is limited to roofing residential properties consisting of 8 units or less" (225 ILCS 335/2(h)). UNLIMITED roofing license — "a license made available to contractors whose roofing business is unlimited in nature and includes roofing on residential, commercial, and industrial properties" (225 ILCS 335/2(i)). The license is issued to the business, which must designate a qualifying party who passes the state examination and is an actively employed, W-2 supervisor of roofing operations.. The Illinois roofing license page sets out who issues it, what it costs to hold and how to verify one. A credential can be checked on the authority's own site.
When is storm season in Illinois?
Illinois's peak severe-weather season: April–July. The roofing work it generates comes from straight-line wind, hail, tornadoes and snow load and winter storms. The Illinois storm center lists any National Weather Service alert active now.NOAA's Storm Events Database holds 11,307 county-level severe-weather events across Illinois between 2016 and 2026, including 959 tornadoes and 2,527 hail reports of 1.00 in or larger; the heaviest county record is Cook County's, with 864 events. The most recent event in the state meeting the dataset's severity definition was a hail report measuring 2.00 in (Baseball) in Clinton County on August 22, 2026, a preliminary report not yet through NOAA's quality-control review. Season boundaries are National Weather Service climatology for the state, not a forecast for any one property.
How much does a roof replacement cost in Illinois?