Roof Replacement Cost in Janesville, Wisconsin (2026)
Janesville homeowners pay $6,580 to $14,570 to put asphalt shingles on a 2,000 sq ft house, roughly 4.8 to 10.6 weeks of the $71,664 a year the median Janesville household takes in. Janesville gets 95 freeze-thaw days, 48th highest of 209. Starting ranges, not quotes. Prices compiled June 2026.
Short answer: In Janesville the typical asphalt re-roof costs $10,600, which is 7.7 weeks of local pay on a $71,664 median household income. Metal in Janesville runs $15,980 to $37,600, and the Janesville asphalt range is $6,580 to $14,570.
Got a quote? See where it falls in Janesville
Compares your price per square foot with the Janesville installed range (tear-off and underlayment included). Not a judgment of any one roofer.
What would a Janesville roof cost per month?
Example rate only; your lender's offer will differ. For a Janesville home the principal is the local range for your size and material, and this is not a loan offer in Janesville or anywhere else.
How much life is left in my Janesville roof?
Typical lifespans are published ranges for each material; for a Janesville house, real life also depends on installation, attic ventilation and the weather Janesville gets.
Price your own roof in Janesville
Janesville prices sit 6% under the national base. A typical Janesville roof is 7.7 weeks of local pay, 159th heaviest of 209 cities.
- Same job at national base rates
- Difference in Janesville
- Extra tear-off included
How we calculated this
One sum produces the asphalt shingle range at the top of this page. You can redo it with a calculator.
| Step | What goes in | Value |
|---|---|---|
| National base, low end | 3-Tab Asphalt Shingles, $3.50 per sq ft × 2,000 sq ft | $7,000 |
| National base, high end | Architectural Asphalt Shingles, $7.75 per sq ft × 2,000 sq ft | $15,500 |
| Janesville cost index | Fixed for Janesville, not recalculated from wages | 0.94× |
| Janesville low | $7,000 × Janesville index 0.94 | $6,580, 4.8 weeks of Janesville pay |
| Janesville high | $15,500 × Janesville index 0.94 | $14,570, 10.6 weeks of Janesville pay |
| Janesville typical | Midpoint of the Janesville low and high, rounded to $50 | $10,600 |
- Where Janesville sits. The median index across the 209 cities we price is 0.89×. 186 of them are under 1.00× and 23 are over it.
- Roofer pay near Janesville. Shown above beside the price, from the BLS source. The index is not calculated from it.
Prices compiled June 2026, BLS pay OEWS May 2025. This is an estimate, not a quote. Why the range has a low and a high end and how the other materials are priced: full method, inputs and limits.
Cost by roofing material in Janesville
A typical asphalt roof in Janesville costs $10,600, which is 7.7 weeks of local pay and puts Janesville 159th of 209 for burden.
| Material | Weeks of pay | Typical | Share of home value |
|---|---|---|---|
| 3-Tab Asphalt Shingles in Janesville | 6.3 | $8,700 | 4.1% |
| Architectural Asphalt Shingles in Janesville | 8.3 | $11,500 | 5.5% |
| Metal (Steel/Aluminum) in Janesville | 16.0 | $22,100 | 10.5% |
| Standing Seam Metal in Janesville | 21.8 | $30,100 | 14.4% |
| Concrete Tile in Janesville | 14.3 | $19,750 | 9.4% |
| TPO / EPDM in Janesville* | 4.1 | $5,650 | 2.7% |
* Flat-roof prices are per 1,000 sq ft, not for a whole 2,000 sq ft house. Rated life: 3-Tab Asphalt Shingles 15–20 years; Architectural Asphalt Shingles 25–30 years; Metal (Steel/Aluminum) 40–70 years; Standing Seam Metal 50–70 years; Concrete Tile 40–50 years; TPO / EPDM (flat roofs) 15–25 years. How we calculated these prices · Sources
What weather does to a Janesville roof
- Freeze-thaw days. Water gets under shingles at night and expands as ice.
- Days at 90F or hotter. Heat bakes the oils out of asphalt and loosens sealant strips.
- Days with an inch of rain. Heavy rain tests flashing, valleys and gutters.
- Yearly precipitation. More water means more years of wet decking.
Rank 1 is the most days or inches among the cities we cover. Values are 2014–2023 averages of a 50 km grid cell around Janesville. Source: NASA POWER (MERRA-2/IMERG reanalysis, daily point data), 2014–2023
Repair or replace in Janesville
The median Janesville home was built in 1972, so an original roof would be 54 years old, past the 25–30 years architectural shingles are rated for. Here a repair mostly buys time. 63.2% of Janesville homes predate 1980, so some roofs on the street are second or third generation.
| Job | Cost | Weeks of pay |
|---|---|---|
| Small repair in Janesville | $600 | 0.44 |
| Larger repair in Janesville | $2,800 | 2.0 |
| Half of a new roof (50% rule) in Janesville | $5,300 | 3.8 |
| One year of roof life in Janesville | $385 | 0.28 |
The last row prices one year of roof life in Janesville: a typical architectural roof divided by its rated 25–30 years. A repair is worth paying for when it buys at least as many years as its cost divided by that figure. The 50% rule is a common rule of thumb, not a law.
If insurance covers the damage
Estimates against Janesville's $6,580–$14,570 range. General information, not legal advice. How claims work →
| Your deductible | Weeks of Janesville pay | Out-of-pocket |
|---|---|---|
| $500 | 0.36 weeks in Janesville | $500 |
| $1,000 | 0.73 weeks in Janesville | $1,000 |
| $2,500 | 1.8 weeks in Janesville | $2,500 |
Storms behind Janesville roof bills
Public NOAA records for Janesville's county.
- 25days with hail of 1 inch or larger
- 2.75 inlargest hailstone reported
- 51days with gusts of 58 mph or more
Hail reports by month
NOAA logged 74 hail reports for Janesville's county since 2014. April is the busiest month with 23 of them, 31% of the total.
Busiest three: April 23, August 12, May 10.
No hail was reported in 3 of the 12 months (January to December, in calendar order).
The costliest storm day on record in the county was June 22, 2024, with $24,808,000 of reported property damage.
All reported hail, wind and tornado damage there adds up to at least $34,343,750. It is a floor, because many reports carry no dollar estimate.
The county saw 15 tornadoes, the strongest rated EF2.
Source: NOAA Storm Events, 2014–June 2026Hail reports per year
| 2017 | 3 |
|---|---|
| 2018 | 3 |
| 2019 | 2 |
| 2020 | 2 |
| 2021 | 4 |
| 2022 | 9 |
| 2023 | 2 |
| 2024 | 10 |
| 2025 | 18 |
| 2026* | 10 |
63 recorded hail events across 9 full years plus 2026 to June represented in the data, about 5.9 per represented full year. 2025 had the most events among represented full years: 18.
The last bar is a partial year.
Source: NOAA Storm Events, 2014–June 2026 Hail risk lookup
Janesville against nearby Wisconsin cities
6 neighbors share 0.94×, against Janesville's 0.94×. Closest is Kenosha, about 61 mi out.
Distances are to scale. Dot size is weeks of local pay for a typical asphalt roof, so a bigger dot means a heavier bill for that city's households.
| City | Weeks of pay | Price vs here | Contractors (verified) | Hail events, since 2017 |
|---|---|---|---|---|
| Janesville (this page) | 7.7 | — | 22 (0) | 63 |
| Kenosha roofers ≈61 mi from Janesville |
8.0 | same | 29 (0) | 15 |
| Racine roofers ≈63 mi from Janesville |
9.9 | same | 22 (0) | 26 |
| Oshkosh roofers ≈93 mi from Janesville |
8.9 | same | 22 (0) | 15 |
| Appleton roofers ≈113 mi from Janesville |
7.1 | same | 25 (0) | 57 |
| Green Bay roofers ≈136 mi from Janesville |
8.8 | same | 27 (0) | 46 |
| La Crosse roofers ≈137 mi from Janesville |
10.2 | same | 21 (0) | 68 |
On the cost index Janesville sits at 0.94×, and a Janesville roof takes 7.7 weeks of its pay, rank 159 of 209.
What a re-roof costs against home values in Janesville
Share of median home value
In Janesville a typical re-roof takes 5.1% of the $209,700 median home value. 91 cities carry a heavier ratio and 117 a lighter one.
Source: Census ACS (Janesville city), 2019–2023How old the homes are
Share of homes built before 1980.
63.2% of Janesville homes predate 1980. The median Janesville home was built in 1972, so a roof never replaced there is 54 years old. Oldest-first, Janesville stands #59 of 209.
Source: Census ACS (Janesville city), 2019–2023The Janesville roofing market
Janesville's 2020 census population was 65,615. After the General Motors Assembly Plant -- the oldest GM plant in North America prior to closing -- shut down in December 2008, the economy shifted toward healthcare and public sector anchors including Mercy Health System and the Janesville School District. The closure left a large industrial building stock requiring ongoing maintenance and re-roofing, while the surrounding residential neighborhoods hold aging housing that drives demand for residential contractors.
Roofing companies in Janesville's county
- 21roofing establishments with paid employees
- 55paid roofing employees
- 76.2%have fewer than 5 employees
- 2.6employees per firm on average
76.2% of the county's roofing firms have under 5 staff, 13 points above the 190-city median of 64%. Firms average 2.6 paid staff.
Source: Census CBP, 2023On PickARoofer: 22 roofing contractors listed in Janesville. See them
What roofers earn here
A roofer in the Janesville metro earns a median $63,310 a year, $3,940 above the $59,370 statewide median. 8 of 141 metros pay more than the Janesville area.
Source: BLS OEWS, roofers, May 2025Janesville roof bill in weeks of pay
Weeks of median household income
The median Janesville household earns $71,664 a year, or $1,378 a week. A Janesville asphalt re-roof, typically $10,600, takes 7.7 weeks of that.
Kenosha ($10,600 typical, 61 miles away) takes 8.0 weeks of its own pay, 0.35 weeks more than Janesville.
158 of 208 other cities ask for more, 50 for less.
Sum for Janesville: $10,600 ÷ ($71,664 ÷ 52) = 7.7 weeks.
Source: Census ACS (Janesville city), 2019–2023Areas PickARoofer contractors serve in Janesville
- Downtown Janesville
- West Janesville
- East Janesville Industrial Park
- Janesville Lakeside
- Forest Hill
ZIP codes: 53546, 53567, 53517, 53502, 53589.
Roof cost in Janesville: questions
In Janesville, what does a roof replacement cost?
In Janesville, how many weeks of pay is a new roof?
In Janesville, should I repair or replace my roof?
For a Janesville home, is a re-roof a big bill?
When does hail hit Janesville?
For a Janesville roof, who pulls the permit?
How many roofing firms work near Janesville?
More for Janesville
Cite this page
Data version: Prices compiled June 2026. Free to quote with credit under CC BY 4.0.