Signs you need it
- Ponding water after rain on a flat roof
- Open seams or failed flashing at rooftop units and parapets
- Ceiling stains below drains, units or roof edges
- A roof near the end of its warranty, with a lease or sale coming up
The county around Rockford has 43 roofing companies with payroll, higher than 80% of the cities we cover. 29 local roofers are listed, 17 license-checked.
Commercial roofing covers retail, office, warehouse, church and multi-family buildings. Most of these roofs are flat or low-slope and use single-ply membranes, modified bitumen, built-up roofing or standing seam metal.
Crews, materials and warranties differ from house roofing. A company that is good on shingles may not be the right one for a membrane roof.
The county has more roofing companies with payroll than most cities we cover, so you can compare several bids on a commercial job. Ask each for references on a building like yours.
Hail of 1 inch or more has fallen near Rockford on more days than in most cities we cover. Membranes can be punctured by hail, so ask for an inspection after a hail day, with core samples if the insulation may be wet.
| Fact | Rockford | Median city | Rank (1 is highest) |
|---|---|---|---|
| Housing units outside single-family houses | 35.4% | 33.2% | 82 of 213 |
| Days with wind gusts of 58 mph or more | 63 | 50 | 67 of 212 |
| Days with hail of 1 inch or more | 31 | 16.5 | 57 of 212 |
| Roofing companies with payroll in the county | 43 | 18 | 41 of 210 |
April has the most reports, 38 of 83. 92% of reports fall from April to August; the other 7 come in February (2), March (2), November (3).
The largest stone in NOAA's record for Winnebago County fell on April 7, 2020: 3 inches, about the size of a teacup.
That day brought 14 reports, with the largest from Winnebago.
A commercial roof laid before April 2020 was in place for the largest stone in the record, so ask for a roof survey and keep it with the warranty papers.
The strongest tornado in the record was rated EF1 on April 17, 2026 and stayed on the ground for 10.88 miles.
The strongest thunderstorm gust was 96 mph, on May 17, 2017.
| Date | Largest hail | Reports | Where |
|---|---|---|---|
| April 7, 2020 | 3 in, a teacup | 14 | Winnebago |
| May 2, 2018 | Size not confirmed | 3 | Rockford |
| April 17, 2026 | 2.25 in, a hen egg | 6 | Durand |
A commercial roof is priced by the building: its area, membrane, insulation, drainage and rooftop equipment. One range per city would mislead.
Ask each company for a written scope and a price per square foot of roof, so bids can be compared line by line.
Estimates for a 2,000 square foot roof, not quotes. How we build them6 of 29 listed, license-checked first. They are based in Rockford (5), Loves Park. We do not tag companies by service, so ask each one about commercial roofing.
483 N Mulford Rd Suite #2, Rockford, IL 61107
License number 104016426
License number 104017063
3466 Colony Bay Dr, Rockford, IL 61109
License number 104015996
2113 Rivington Rd, Loves Park, IL 61111
License number 104003315
555 S Perryville Rd Ste 117, Rockford, IL 61108
License number 104020240
4901 W State St, Rockford, IL 61102
License number 104019831
Permit requirements depend on the property, scope of work and local jurisdiction. Check with the city or county building department and confirm who will obtain any required permit before work starts.
Send one free request. We offer it to one local company at a time. We can't promise when a roofer will call.