Cost to Replace a Roof in Joliet, IL (2027 Price Guide)
Adjust the house size or the roof slope in Joliet, IL
A roof's pitch is its rise in inches over twelve inches of run. Steeper roofs like 9/12 need roof jacks and harness work, so they cost more. We assume 7/12 for Illinois; pick yours above.
Our model puts a new asphalt roof in Joliet, IL at $10,620 to $16,190, based on a typical 1,700 sq. ft. single-story house. Behind the number: a 7/12 pitch, close to 2,083 sq. ft. of roof surface (20.8 squares), one old layer removed, materials and installation included.
On a per-square basis (a square equals a hundred square feet), Joliet, IL prices this roof at about $621.82. Two common step-ups: architectural 50-year shingles at $11,810 to $17,990, and steel shingles, the entry metal, from about $22,850.
Compared with $10,440 to $15,910 statewide, the Joliet market adds about $230. The Joliet figures cover its 7 ZIP codes in Will County.
Joliet, IL Roofing Costs by Material
Every row is the same Joliet, IL roof with a different surface. The low and high ends mark the usual spread between contractors; the middle column is the number to budget.
| Material | Installed cost | Estimate | Per square |
|---|---|---|---|
| Asphalt shingles | |||
| Asphalt shingles, 30-year | $10,620 to $16,190 | $12,950 | $621.82 |
| Architectural shingles, 50-year | $11,810 to $17,990 | $14,400 | $691.03 |
| Metal | |||
| Steel shingles | $22,850 to $34,840 | $27,870 | $1,338.01 |
| Aluminum shingles | $25,270 to $38,520 | $30,820 | $1,479.57 |
| Standing seam metal | $30,460 to $46,440 | $37,150 | $1,783.67 |
| Stone-coated steel tiles | $31,110 to $47,420 | $37,940 | $1,821.42 |
| Flat / low-slope membranes (priced on the 1,700 sq. ft. footprint) | |||
| EPDM rubber membrane | $14,470 to $18,800 | $16,640 | $978.34 |
| TPO membrane, 60-mil | $12,460 to $16,180 | $14,320 | $842.03 |
| PVC membrane, 60-mil | $15,060 to $19,560 | $17,310 | $1,018.19 |
Shingle rows use the same math as our roof replacement calculator; metal rows follow the metal roof calculator, and membranes follow the flat roof calculator. All of them carry the Great Lakes cost adjustment, which puts shingles and metal 5% above the U.S. average.
Price per Year of Roof
The real cost of a roof is price divided by the years it lasts. Hover a bar: metal costs more up front and less per year.
Service lives follow the climate-bell model above (asphalt peaks in moderate regions; metal assumes correct installation); prices are the Joliet, IL estimates above.
Why Joliet, IL Roofing Bids Differ
Before you rank quotes by price, check that they cover the same work. Our model values each variable on the 20.8-square roof like this:
- Layers to remove. One layer costs roughly $3,110 to take off. Older homes sometimes hide a second layer, which adds near $2,010.
- Roof shape. When every side of the roof slopes down to a gutter (a hip design), add close to $1,280 over a two-sided gable. Plenty of dormers and valleys raise the add-on to about $2,170.
- Building height. Same roof, two stories up: about $920 more, mostly labor and safety staging.
- Roof windows. Each skylight in the scope adds roughly $380 - cheaper now than as a separate job later.
- Roof deck. Ask every bidder for a per-sheet plywood or OSB price. It turns the biggest unknown on the job into a known number.
- Flashing, vents and gutters. Some roofers include new flashing and vents; others bill them separately. Price new gutters on their own with the gutter cost calculator.
- Permit and disposal. Fees depend on the town. Confirm the bid includes both the permit and the dumpster.
Match the Quote to Your Roof
Set the material, the layers coming off, the roof shape and the house height. The price updates instantly from our Joliet, IL model.
$12,950quotes usually $10,620 – $16,190
Based on this page's 2,083 sq. ft. roof at 7/12 and Joliet, IL pricing. Not included: skylights, gutters, replacement decking.
A fair comparison holds scope constant - same layers off, same underlayment, same flashing and vent work, same decking terms. Then price decides.
How Illinois Weather Ages a Roof
A roof in Illinois lives in Climate Region 2: about 87°F on a typical summer afternoon, about 35°F on a winter afternoon, and about 19°F on a winter night. What that means for materials and installation in Illinois:
Ice dams. These form when a warm attic melts snow that refreezes at the eaves, trapping water that backs up under the roofing. Two fixes work together: self-adhering ice barrier at the edges and a well-sealed, well-insulated attic. Compare costs with the attic insulation calculator and roof heat cable calculator.
Freeze-thaw cycles. Water that seeps into a cracked shingle or an open seam freezes at night and widens the gap. Over many winters, small openings become leaks. Ice barrier at the eaves is inexpensive protection.
Severe storms. Spring storms bring gusts that test every shingle seal strip. A high-wind nailing pattern and starter strips at the edges cost little and hold the roof down.
Where Shingles Live Longest: the Climate Bell
Asphalt life peaks in the moderate middle (Region 3) and falls toward BOTH ends of the map above - cold regions destroy shingles with ice dams, hot ones bake them. Note the middle columns: shingles marketed as “lifetime” are good for about 25 real-world years at best - Illinois is Region 2. Hover any column.
low pitch holds snow and ice - it costs the most years in cold regions
Planning figures from our climate model, for ventilation-correct installs - a baked, unvented attic can take years off any column. Pitch adjusts the asphalt columns only; metal sheds snow at any sane pitch.
Check Roof Prices Where You Live
Metal Roofing Prices in Joliet, IL
A metal roof on a typical 1,700 sq. ft. single-story house in Joliet, IL starts at $22,850. The type you pick matters more than the brand, so here is how the main options differ.
- Standing seam: $30,460 to $46,440. Tall ribs, clips under the seams, nothing exposed to rust or work loose. Wide, plain roof planes show it at its best. Here it costs about $22,760 above architectural shingles.
- Steel shingles: $22,850 to $34,840. Aluminum shingles: $25,270 to $38,520. Small metal panels with a shingle or tile profile. They go on much like shingles, so hips and dormers are easier than with long panels. Pick aluminum near the ocean and steel inland.
- Stone-coated steel: $31,110 to $47,420. Steel panels covered in crushed stone and shaped like clay tile or wood shake. The texture hides hail marks and softens rain noise.
- Copper: custom quote only. Copper is a craft job, so we leave it out of the calculator and you will need a custom bid. It costs the most of any metal by a wide margin. A small copper accent over a bay window gives you the look without the whole-roof bill.
With winter lows near 19°F, metal earns its price. Snow does not sit on it long, ice rarely builds at the eaves, and there are no shingles for frost to crack. That adds years to the roof. Put snow guards above entries and the driveway.
Owners who stay put get the most from metal, because the long service life is where the savings sit. Want a firmer metal number? Try the metal roof calculator with your measurements.
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Best Season for a New Roof in Joliet, IL
With winter afternoons near 35°F, roofers do their best work between spring and late fall. Winter jobs are possible, but tabs may need hand sealing.
Storm chasers follow hail and wind. Hire a roofer with a local office and proof of insurance, and never sign over insurance proceeds on the spot.
What a Flat Roof Costs in Joliet, IL
A flat roof the size of this home's 1,700 sq. ft. footprint would run, in Joliet, IL:
- EPDM rubber: $14,470 to $18,800. This is the black rubber sheet on many older flat roofs. Big sheets mean few seams. It stays soft in deep cold and any roofer can patch it, which makes it a good fit for a garage or a back porch.
- TPO, 60-mil: $12,460 to $16,180. Most roofers reach for TPO first today. It is white, light, and the seams are melted together rather than glued. Thicker sheets last longer, so compare the mil rating on each bid.
- PVC, 60-mil: $15,060 to $19,560. Also white and heat-welded, but tougher against grease, chemicals and standing water. It is the pick for roof decks, low spots that hold puddles, and anything near a kitchen exhaust.
On this footprint TPO comes in lowest, EPDM sits in the middle and PVC costs the most. We count new insulation board and one stripped layer in every row. Expect a higher per-square-foot price on a small porch or garage roof. In Illinois winters, puddles on a flat roof freeze, thaw and creep into the seams. Clear the drains often, and ask for tapered fill at any low spot during the re-roof. For thicker insulation or a different membrane, use the flat roof calculator.
Cold is hard on seams. Ask for welded TPO or PVC seams, or fully taped EPDM seams, and make sure every drain and scupper stays open when the snow melts.
Compare Joliet With Other Illinois Cities
How Joliet compares with other Illinois cities on the standard asphalt roof:
- Naperville, IL: $10,730 to $16,350, about 15 miles north
- Aurora, IL: $10,650 to $16,230, about 20 miles northwest
- Chicago, IL: $11,040 to $16,830, about 35 miles northeast
- Elgin, IL: $10,580 to $16,130, about 35 miles north
- Rockford, IL: $10,620 to $16,190, about 70 miles northwest
- Springfield, IL: $10,580 to $16,130, about 140 miles southwest
Roofers serving Joliet also cover Plainfield, Bolingbrook, Orland Park, Tinley Park and Downers Grove, generally at similar prices. The Illinois roofing cost guide has the statewide numbers and every city.
Before You Re-Roof in Joliet, IL
Does a re-roof in Illinois require a permit?
Most local building departments want one when the old roof comes off completely, and some send an inspector at the end. The contractor should file it; be cautious if a roofer asks you to.
How many squares is my roof?
Measure the area the roof covers, then scale it up for slope. The 1,700 sq. ft. footprint in this guide, sloped at 7/12, grows to near 2,083 sq. ft. - 20.8 squares once overhang and waste are counted. Ask each roofer for their square count in writing.
How long does a re-roof take?
A typical 20.8-square asphalt job takes from one day to a few, depending on layers, pitch and weather. Metal and cut-up roofs take longer. Any section left open overnight should be covered.
Can I file an insurance claim for a new roof?
Policies pay for sudden events, not aging. Check whether yours pays replacement cost or depreciated value; on a $10,620 to $16,190 roof, that choice decides who pays most of the bill. Many Illinois policies use a separate, percentage-based deductible for wind and hail; look it up before storm season.
Run your own numbers: Roof Replacement Calculator · Metal Roof Calculator · Flat Roof Calculator · Gutter Cost Calculator · Attic Insulation Calculator · Roof Heat Cable Calculator
Method: calculator math, a Great Lakes cost factor and annual inflation updates produce every price here. Your roof's real measurements and conditions decide the final bid - get several written quotes.
Quick Answers
Answers use Illinois averages; energy prices updated October 2026.
What time of year is best for a new roof in Illinois?
The warm months. With winter afternoons near 35°F in Illinois, shingle adhesive strips struggle to bond, so most crews book late spring into early fall; a cold-weather job needs hand-sealed tabs.
Does a new roof in Illinois need an ice barrier membrane?
Yes. Illinois averages winter lows near 19°F, cold enough for ice dams. Ask for self-adhering membrane along the eaves, in valleys and around chimneys; local code may set how far up it must run.
Does metal roofing make sense in Illinois?
For long-term owners, often. Winter lows near 19°F mean snow and freeze-thaw in Illinois; metal sheds the snow and resists both. Plan snow guards wherever sliding snow could land on people.
Will a lighter roof lower cooling costs in Illinois?
Only a little. Winter lows around 19°F mean heating dominates the energy bill in Illinois; spend first on attic insulation and air sealing.
Can new shingles go on top of the old roof?
Sometimes, if only one layer is on now and local code allows a second. A full tear-off costs more but exposes the deck, so rotted boards get replaced rather than buried.
Run your own numbers: Roof replacement calculator or Metal roof cost calculator.
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