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How much does a roof replacement cost in Janesville, WI?

Regionally adjustedUpdated Prices checked October 20262 sources

In Janesville, a roof replacement typically runs $6,880 to $12,850, about $9,180 for a typical job. That is the US national range from Fixr ($7,500 to $14,000) adjusted by the East North Central factor of 0.92 from the 2025 Cost vs. Value Report. Checked October 2026.

Adjusted for the East North Central region

Low
$6,880
Typical
$9,180
High
$12,850

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Roof replacement cost in Janesville, WI

Each row says exactly what the figures are and where they come from.

Roof replacement cost in Janesville, WI
EstimateLowTypicalHighBasisChecked
East North Central estimate$6,880$9,180$12,850National range × 0.92: the East North Central / national cost ratio for “Roofing Replacement | Asphalt Shingles” ($29,253 vs $31,871) in the 2025 Cost vs. Value ReportOctober 2026
US national range$7,500$10,000$14,000Per project: asphalt shingles on a 1,700 sq ft home (about 2,000 sq ft of roof) (Fixr)October 2026

Roof replacement cost by type or size

US national figures in USD, as published by each source.

Roof replacement cost by type or size
Type or sizePrice (USD)Source
Slate roof$20,000 to $60,000Fixr
Copper roof$30,000 to $60,000Fixr

What drives the cost of a roof replacement

  1. Roof size

    Contractors price by the square foot, about $3.75 to $11 and $4.75 on average.

  2. Material

    Asphalt shingles average about $10,000; slate and copper run $20,000 to $60,000.

  3. Pitch and shape

    Hips, valleys, dormers and steep pitches add labor; a steep pitch can add $1,000 to $3,000.

  4. Tear-off and disposal

    Removal averages about $50 per square (100 sq ft), up to $150 for heavy materials.

  5. Decking repairs

    Rotten or damaged decking found during tear-off costs $2 to $8 per sq ft to replace.

  6. Local labor and code

    Labor is roughly 40% to 60% of the total; fire-, wind- or impact-rated codes can add more.

Permits and what's included in Janesville

Permit note

Re-roofing usually needs a building permit. Permits typically cost $100 to $500, and strict fire-, wind- or impact-resistance codes can add more in some areas.

Rules are set locally; confirm with Janesville’s building department.

What’s usually included

  • Removal of the old roof
  • Underlayment and standard roofing felt
  • Installation of the new roof covering
  • Manufacturer and workmanship warranties (terms vary by contractor)

Scopes vary. Get the scope in writing on every quote.

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Top-ranked roofers in Janesville

The top 3 of 364 roofers we rank for Janesville, WI, by CR Score. Paid placement never changes rank.

  1. #1
    Basswood Roofing LLC
    CR Score 645.0from 89 Google reviews
  2. #2
    Smith Roofing and Exteriors
    CR Score 635.0from 322 Google reviews
  3. #3
    Aurum Contracting
    CR Score 634.7from 253 Google reviews

See all ranked roofers in Janesville

How to check a roofer's license in Wisconsin

In Wisconsin, Wisconsin Department of Safety and Professional Services licenses Dwelling contractor certification for work on one- and two-family homes that needs a building permit.

  1. Search the business name or license number on the Wisconsin Department of Safety and Professional Services license lookup.
  2. Check that the status is active and the name matches the contract or truck.
  3. Ask for proof of insurance before work starts.

No chip usually means we have not matched a state record yet. Check the lookup yourself before you hire.

Guide checked October 2026. How we verify licenses

Roof replacement cost in Janesville: questions

How much does a roof replacement cost in Janesville, WI?

In Janesville, a roof replacement typically runs $6,880 to $12,850, about $9,180 for a typical job. That is the US national range from Fixr ($7,500 to $14,000) adjusted by the East North Central factor of 0.92 from the 2025 Cost vs. Value Report. Checked October 2026.

Why is the Janesville price different from the national price?

The 2025 Cost vs. Value Report puts the “Roofing Replacement | Asphalt Shingles” project at $29,253 in the East North Central division against $31,871 nationally, a factor of 0.92. We apply that factor to the national range. It is a division-level adjustment, not a Janesville price survey.

Do I need a permit for a roof replacement in Janesville?

Re-roofing usually needs a building permit. Permits typically cost $100 to $500, and strict fire-, wind- or impact-resistance codes can add more in some areas. Rules are set locally, so confirm with Janesville’s building department.

What affects the cost of a roof replacement?

Roof size: contractors price by the square foot, about $3.75 to $11 and $4.75 on average. Material: asphalt shingles average about $10,000; slate and copper run $20,000 to $60,000. Pitch and shape: hips, valleys, dormers and steep pitches add labor; a steep pitch can add $1,000 to $3,000. Tear-off and disposal: removal averages about $50 per square (100 sq ft), up to $150 for heavy materials.

How many roofers serve Janesville?

We rank 364 roofers for Janesville, WI by CR Score. Get at least three written quotes for the same scope.

What is usually included in the price?

Removal of the old roof; Underlayment and standard roofing felt; Installation of the new roof covering; Manufacturer and workmanship warranties (terms vary by contractor). Always get the scope in writing on the quote.

Sources

Checked October 2026. Figures are estimates, not quotes.

  1. Fixr: Roof replacement cost · page updated February 4, 2026 · checked October 2026Primary source. Used for: Low, typical and high; basis; drivers; permit.
  2. HomeAdvisor: Roof replacement cost · page updated June 17, 2026 · checked October 2026Used for: Cross-check: normal range $5,903 to $13,378, average $9,609 (customer-reported projects); pitch driver.
  3. Journal of Light Construction: 2025 Cost vs. Value Report, East North Central division · checked October 2026Used for: Regional factor 0.92 for “Roofing Replacement | Asphalt Shingles”.
These are published estimates with a documented regional adjustment, checked October 2026. They are not quotes. Typical range shown: $6,880 to $12,850. Editorial policy

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