Champaign, IL · Flat Roof

Flat Roof Contractors in Champaign, Illinois

Commercial or residential flat roof — compare local roofing companies. 27 local roofers listed, 11 verified.

Short answer: Flat and low-slope roofs in Champaign are usually TPO ($5.50–$9 a sq ft installed), EPDM ($4.50–$8) or modified bitumen ($3–$7); the membrane lasts 15–25 years, mostly decided by how well the drains are kept clear. In Champaign: 4.6 heavy-rain days a year (1 inch+). 11 of the roofers below have a license we checked; for any other, ask for a license number and a certificate of insurance.

Get a free quote See Champaign in numbers
  • 4.6heavy-rain days a year (1 inch+)
  • 39.8 inrain a year
  • 10days a year at 90°F or hotter
  • 51%of homes are not single-family houses

How much life is left in my Champaign roof?

Typical lifespans are published ranges for each material; for a Champaign house, real life also depends on installation, attic ventilation and the weather Champaign gets.

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Under Champaign's summer heat, a flat roof's membrane choice drives lifespan more than almost anything else: white TPO or a reflective coating keeps surface temperatures 40 to 60 degrees lower than dark EPDM and extends service life significantly. Common flat roof systems in Champaign include TPO (heat-welded, energy-efficient), EPDM (durable rubber membrane), and modified bitumen — each with different cost, longevity, and maintenance profiles worth discussing with a local contractor.

Champaign in numbers

Public records for Champaign and its county, not estimates. Each figure shows its source.

  • #43of 209Champaign ranks #43 of the 209 cities we cover for damaging thunderstorm-wind days.
  • #45of 209Champaign ranks #45 of the 209 cities we cover for largest hailstone on record.

Hail reports per year in the county

Hail events per year in the county, 2017 to 2026* 6 2017 4 2018 7 2019 7 2020 14 2022 11 2023 5 2024 6 2025 20 2026*
Hail events per year in the county, 2017 to 2026*
20176
20184
20197
20207
202214
202311
20245
20256
2026*20

80 recorded events across 8 full years plus 2026 to June represented in the data. 2022 had the most events among represented full years: 14.

2026 covers only January to June: NOAA's file ends there, so it is not counted as the worst year or in the yearly average. Years without a data row: 2021. Missing rows are not treated as zero; no annual average is shown.

Source: NOAA hail events, county level · data as of 2017–2026*

Costliest storm day on record

Jul 11, 2020

8 reports that day (5 hail, 3 wind); reported property damage $5,000,000; county FIPS 17019, 2014–June 2026

Source: NOAA Storm Events · data as of 2014–June 2026

When storms hit Champaign

Hail reports by month in the county, all years combined 0 Jan 7 Feb 17 Mar 19 Apr 31 May 11 Jun 6 Jul 1 Aug 13 Sep 1 Oct 0 Nov 0 Dec
Hail reports by month in the county, all years combined
Jan0
Feb7
Mar17
Apr19
May31
Jun11
Jul6
Aug1
Sep13
Oct1
Nov0
Dec0

Most hail reports come in May; the season runs February to September. Book inspections and repairs before that window, not after.

Source: NOAA Storm Events · data as of 2014–June 2026

Roofing trade around Champaign

  • 13 roofing companies with payroll in the county, employing about 68 people; 62% have fewer than 5 employees.
  • A roofer's median pay here is $60,150 a year (Champaign-Urbana, IL Metro Area).
Source: Census CBP · data as of 2023 Source: BLS OEWS, roofers · data as of May 2025

Champaign storm record: Champaign County

What the National Weather Service logged in Champaign County in 2014–2026. County level, because storm reports are filed by county, not by city limits.

  • 1855Founded
  • 738 ft (225 m)Elevation

Where hail of 1 inch or more was reported in Champaign County

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  • 471 to 1.74 in
  • 151.75 to 2.74 in, golf ball to tennis ball
  • 12.75 in and up, baseball

Largest plotted stone: 3 in. Bigger dots are bigger stones.

63 reports of 1 inch or larger have coordinates. Each dot is a reported location, not a storm path.

Sources: NOAA, Census county outline

Biggest hail days

DateLargest hailReports that dayWhere it was reported
April 9, 2015 3 in, about the size of a teacup 6 Mahomet
September 19, 2022 2.5 in, about the size of a tennis ball 10 Mahomet
July 11, 2020 2 in, about the size of a hen egg 5 Mira Station · $5 million damage
“Many of the storms produced large hail and damaging wind gusts, with the largest hailstones of around 3 inches in diameter being reported near Mahomet in Champaign County.”
National Weather Service report, April 9, 2015
Source: NOAA Storm Events Database · data as of 2014–2026

Last big hail on record

June 16, 2026

Hail of 1.75 inches (golf ball) or larger fell on 8 days in 2014–2026. Our records end where NOAA's do, so a newer storm may not be listed yet.

Strongest tornado

EF2 · September 9, 2016

It stayed on the ground for 6.26 miles and was up to 75 yards wide. A tornado touched down in a field 3.6 miles south of Sidney at 6:31pm CDT. The tornado tracked northeastward for more than two miles damaging corn and soybean crops before destroying a garage and a large shed. A car and large RV were also damaged.

Strongest thunderstorm gust

82 mph · June 29, 2023

Widespread wind gusts of 60-80mph were observed along the line, with localized corridors of even higher gusts. The highest measured gust of 101 mph came from a personal weather station near Taylorville that took a direct hit from a tornado.

What it means for flat roof

Flat and low-slope roofs hold hail on the surface instead of letting it bounce. With 3-inch hail on record in Champaign County, ask what membrane and cover board the contractor specifies.

Storm data: NOAA Storm Events (public domain). City facts: Wikidata (CC0).

What it costs in Champaign

Asphalt-shingle re-roof, 2,000 sq ft home, adjusted for Champaign labor and material prices. Your quote depends on roof size, pitch and scope.

That typical price is about 5.5% of the median Champaign home value ($199,700).

Source: Census ACS (Champaign city) · data as of 2019–2023

Full Champaign cost guide by material →

What Champaign's climate means for flat roof

  • Reflective TPO or a white coating earns its premium in Champaign, where dark membranes absorb punishing heat and age years faster.
  • Champaign's freeze-thaw cycling works open membrane seams and flashing laps — heat-welded TPO seams outlast taped or adhered ones in this climate.

Roofers in Champaign, IL

27 listed, first 20 shown. Roofers we verified against a public registry come first.

This list covers roofing companies generally. Confirm flat roof experience, materials, insurance and current availability with each company. A Verified badge refers to the registry check, not a confirmed specialty.

Flat Roof in Champaign: questions

How do I find a flat roof company in Champaign?
PickARoofer lists roofing companies serving Champaign, IL. This is a general roofing directory; confirm flat roof experience and availability with each company. A Verified badge describes a separate registry check, not a confirmed service specialty or insurance check. Confirm scope, insurance and availability directly. Requests go to one contractor at a time, with up to three attempts; a response or start date is not guaranteed. Free for homeowners.
Should I repair or fully re-roof in Champaign?
Ask a roofer to document the damage and compare a written repair scope with a replacement estimate. Roof condition, remaining life, materials and the extent of damage affect the decision. Confirm any inspection fee before booking.
When is hail season in Champaign?
May is the worst month: 29% of the 106 hail reports NOAA holds for the county came then. Reports run from February to September. Book the inspection before February, while crews still have open dates.
How big does hail get near Champaign?
The largest hail NOAA logged near Champaign measured 3 inches, about the size of a teacup. Hail of an inch or more fell on 24 days in the same record. The biggest day was April 9, 2015, with 6 reports. The National Weather Service calls hail of 1 inch or larger severe; the bigger the stone, the more likely it is to crack a shingle.
How old are the homes in Champaign, and does it matter for the roof?
The median home in Champaign was built in 1985, and 43.7% of homes date from before 1980 (Census ACS). A roof on a home that old has often been re-covered at least once, so ask the roofer whether there is a second layer underneath: it changes the tear-off cost. The area sees about 94 freeze-thaw days a year, which loosens flashing and sealant.
What does roofing cost in Champaign?
For an average 2,000 sq ft home we model asphalt-shingle re-roof at $6,790 to $15,035 in Champaign, around $10,900 in the middle. That is about 5.5% of the median home value of $199,700. Your quote moves with roof size, pitch and how many layers come off.
How many roofing companies work around Champaign?
The Census Bureau counts 13 roofing companies with payroll in Champaign County, employing about 68 people. 61.5% of them have fewer than five employees, so most quotes come from owner-run crews. A roofer's median pay is $60,150 a year (BLS).
Which flat roof membrane holds up best under Champaign's summer heat?
White TPO (thermoplastic polyolefin) is the dominant choice for new flat roofs in hot climates like Champaign: its reflective surface keeps membrane temperature dramatically lower than dark EPDM, which absorbs heat and ages faster under intense sun. Modified bitumen with a granulated cap sheet is an older alternative that performs adequately but runs hotter. Whichever system you choose, plan for a reflective coating renewal on the manufacturer's recommended cycle — it extends membrane life and cuts cooling load in attic-adjacent spaces.
What is the difference between TPO, EPDM, and modified bitumen for Champaign properties?
TPO (thermoplastic polyolefin) uses heat-welded seams and a white reflective surface — the current industry standard for new commercial and residential flat roofs, best for energy efficiency. EPDM (ethylene propylene diene monomer) is a rubber membrane installed with taped or adhesive seams — very durable and forgiving, widely used on residential flat roofs for decades. Modified bitumen is a reinforced asphalt sheet applied by torch or cold adhesive — economical and familiar to many local Champaign contractors, though it runs warmer than TPO and may require more frequent coating. Cost, pitch, and building type typically dictate the right choice — a Champaign flat-roof specialist can walk you through the tradeoffs for your specific structure.
Do I need a permit for flat roof in Illinois?
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.

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Figures above: NOAA Storm Events Database (hail, wind, tornado; county of the city, 2014–2026), U.S. Census Bureau American Community Survey 5-year estimates (housing), NASA POWER (temperature and rain, 2014–2023). Prices: our published price method. How we collect data.