A roof replacement is one of the largest exterior investments a Southern Illinois Tri-State homeowner will make—whether you are in Mount Vernon, IL (Jefferson County—not Mount Vernon, Indiana), Carmi, or elsewhere along the Jefferson / White County corridor. Public cost calculators and state-level explainers publish estimate ranges. They are useful for budgeting conversations, not as bids.
TSHR is a matching service and homeowner media brand—not a roofing contractor. Nothing below is a quote, insurance appraisal, or TSHR market index.
When you are ready for comparable bids, use the contractor directory or request a contractor. Pair this with our roofing repair-vs-replace and storm-prep cornerstones, plus the live Mount Vernon, IL hub and Carmi, IL hub.
What a “new roof” project usually includes
A typical asphalt shingle tear-off and reroof often includes:
- Tear-off of one layer of existing shingles (confirm layer count)
- Deck inspection and replacement of damaged sheathing (priced per sheet when needed)
- Underlayment (synthetic or felt), ice-and-water shield at eaves/valleys as specified
- Flashings (chimney, step, pipe boots), drip edge, ridge vent / ventilation plan
- New shingles, starter, ridge cap, and cleanup/magnet sweep
Often extra: multiple tear-offs; extensive decking; skylight replacement; chimney rebuild; fascia/soffit work; full ventilation redesign; steep/complex roof premiums; permit fees; dumpster; temporary roof protection after a storm.
Estimate bands (public Illinois / national explainers)
These are national ranges — not Southern Illinois / Mount Vernon / Carmi contractor quotes.
| Item | estimate (public explainers) | Notes / source type |
|---|---|---|
| Illinois average total (often framed for ~1,800–2,200 sq ft architectural asphalt) | About $9,500–$23,000, with statewide averages near ~$15,200 on Modernize’s Illinois calculator | Modernize Illinois roof cost calculator (aggregator estimate) |
| Downstate peer metros on same Modernize table (Springfield / Peoria / Champaign–Urbana) | About $11,000–$19,500 for a framed 2,000 sq ft roof scenario | Nearest published downstate peer bands—not Mount Vernon or Carmi city lines (those cities are not listed on the Modernize metro table) |
| Chicago–Naperville–Elgin (contrast only) | About $13,500–$24,000 for 2,000 sq ft on the same table | Higher metro labor—do not treat as SE IL pricing |
| Asphalt shingles installed (Illinois framing) | Roughly $5–$11 / sq ft installed; $500–$1,100 per square (1 square = 100 sq ft of roof surface) | Modernize Illinois |
| Architectural asphalt on ~2,000 sq ft roof (material table) | About $10,000–$22,000 total | Modernize Illinois material table |
| Metal roofing installed (Illinois framing) | Roughly $9–$18 / sq ft; many full metal projects framed ~$18,000–$38,000 | Modernize Illinois metal section |
| Home-size asphalt scenarios (Illinois calculator language) | Small (~1,000–1,500 sq ft): ~$7,500–$13,500; medium (~1,500–2,500): ~$10,000–$20,500; large (2,500–3,500+): ~$16,000–$30,000+ | State calculator home-size bands |
Critical caveats:
- “Square feet of home” ≠ “squares of roof.” Pitch, hips/valleys, and overhangs change roof area. Always ask contractors to price by roofing squares and list inclusions.
- Modernize’s Illinois metro table highlights Chicago-area and central Illinois cities—not Mount Vernon or Carmi. SE Illinois bids can track closer to Springfield/Peoria/Champaign peer language than Chicago, but only local written quotes settle the number.
- Storm surge demand, material brand, and deck condition can move Southern Illinois bids well outside any table.
Cost drivers
- Material — 3-tab vs. architectural vs. impact-rated vs. metal.
- Roof geometry — Steep pitch, dormers, and cut-up roofs raise labor.
- Tear-off layers & decking — Soft or damaged sheathing is a major variable.
- Ventilation & underlayment upgrades — Better assemblies cost more upfront; may reduce moisture/ice issues.
- Storm / insurance work — Claim scopes, code upgrades, and temporary dry-in change sequencing.
- Access & disposal — Multi-story, tight lots, and dumpster logistics.
- Warranty package — Manufacturer + workmanship terms differ widely—read them.
Southern Illinois Tri-State notes (climate, storms, resilience, permits)
Southern Illinois sees severe thunderstorms, hail, high winds, and freeze–thaw. Jefferson County hazard planning materials and NWS Paducah coverage for the Mount Vernon / Carmi warning area are why material choice and installation details matter as much as shingle brand marketing.
- IBHS education: The Insurance Institute for Business & Home Safety (IBHS) FORTIFIED Roof™ guidance emphasizes a system—sealed roof deck, enhanced edge attachment, and properly rated covers—not just a surface product. For hail-interested homeowners, IBHS publishes Hail Impact-Resistant Shingle Ratings and explains that “Class 4” marketing is not the same as IBHS’s own hail performance ratings. See fortifiedhome.org/roof.
- Flood vs. roof: Roof leaks and wind damage are generally homeowners-insurance conversations; flood is separate (FEMA Flood Insurance). Check maps at the FEMA MSC and Illinois flood map portals for Jefferson / White Counties.
- Permits: Most full reroofs require a building permit—confirm with your Illinois AHJ. Inside Mount Vernon city limits, start with Engineering & Inspections (mtvernon.com building permits). Inside Carmi, confirm with the City Clerk / city process. Unincorporated parcels use county rules. Do not assume Indiana city registration applies.
- After storms: Document damage safely from the ground when possible; avoid walking a damaged roof. Use our storm-prep cornerstone and the hire checklist before signing. Related: post-storm tree damage first steps.
When to get multiple quotes
Collect 2–3 written proposals that each list:
- Squares, pitch, layers to tear off
- Shingle brand/line, wind rating, and underlayment
- Decking allowance (price per sheet)
- Ventilation plan and flashing scope
- Cleanup, dumpster, and timeline
- Workmanship warranty years and who stands behind it
If numbers differ wildly, ask each bidder to walk the same scope. Cross-check with TSHR how to read a contractor quote and roofing repair vs. replace pieces.
Compare local pros via the contractor directory or request a contractor. Subscribe for Tri-State seasonal and storm updates.
Sources
- Modernize — Illinois roof replacement cost calculator / state guide (statewide average, metro table, $/sq ft, material bands).
- IBHS FORTIFIED — Roof system overview.
- IBHS — Hail protection / impact-resistant shingle education.
- City of Mt. Vernon — Building Permits.
- FEMA Flood Map Service Center; FEMA Flood Insurance; Illinois Flood Maps / IDNR NFIP.
- Secondary state aggregators reviewed for band context only (CostPrism / similar)—prefer Modernize + IBHS + .gov in footnotes.
Find a local contractor
Browse roofing contractors in the Evansville Tri-State, or tell us what you need and we will hand it to one local contractor in your area. Free to you — contractors pay us, you never do.
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