Flat Roof Replacement cost: Greenfield vs Madison (2026)
Greenfield runs 7% higher than Madison for flat roof replacement — expect around $11,100 in Greenfield against $10,350 in Madison, a difference of about $750.
Greenfield WI
Typically around $11,100
Madison WI
Lower costTypically around $10,350
Greenfield vs Madison: full breakdown
| Factor | Greenfield | Madison |
|---|---|---|
| Typical 2026 cost | $11,100 | $10,350 |
| Estimated range | $5,700–$16,500 | $5,300–$15,350 |
| Labor index (vs US) | ×1.05 | ×0.98 |
| Climate zone | Cold | Cold |
| Climate factor | ×1.03 | ×1.03 |
| Local permit | $275 | $275 |
| Labor share | $6,650 | $6,200 |
| Materials/equipment | $4,450 | $4,150 |
Localized 2026 planning estimates — not quotes. Each city adjusts the national flat roof replacement range for local labor, climate and permits.
How much should this gap actually matter?
That 7% gap is small — for flat roof replacement it's usually less than the spread between two local contractors' quotes, so the metro matters far less than who you hire and when you buy.
Flat roof replacement by type: Greenfield vs Madison
Each flat roof replacement option, priced separately for both metros — the same local labor, climate and permit adjustments applied per city, so you can compare like for like.
| Type | Greenfield | Madison |
|---|---|---|
| EPDM (rubber) | $5,700–$13,250 | $5,300–$12,350 |
| TPO | $6,750–$14,350 | $6,300–$13,350 |
| PVC | $7,850–$16,500 | $7,300–$15,350 |
| Modified bitumen | $5,700–$12,200 | $5,300–$11,350 |
| Built-up roofing (BUR) | $7,300–$15,400 | $6,800–$14,350 |
Localized 2026 planning estimates — not quotes. Each city adjusts the national flat roof replacement range for local labor, climate and permits.
Flat roof replacement by roof size: Greenfield vs Madison
Flat and low-slope roofs are priced per square (100 sq ft) and run about $3–$11 per sq ft installed, depending on the membrane. The roof area is close to the footprint since there's little pitch.
| Size | Greenfield | Madison |
|---|---|---|
| 1,000 sq ft (10 squares) | $4,600–$9,450 | $4,300–$8,800 |
| 1,500 sq ft (15 squares) | $5,700–$12,200 | $5,300–$11,350 |
| 2,000 sq ft (20 squares) | $6,750–$15,400 | $6,300–$14,350 |
| 2,500 sq ft (25 squares) | $8,400–$17,600 | $7,800–$16,350 |
| 3,000+ sq ft (30 squares) | $10,000–$20,850 | $9,300–$19,400 |
Flat roof replacement numbers here are 2026 planning ranges, adjusted per city — useful for budgeting, not a substitute for an actual quote.
What roofing pros earn in each metro
Labor is about 60% of a flat roof replacement bill, so local wages drive most of the gap. These are real metro hourly wages for skilled installers (BLS OEWS), not estimates.
Milwaukee-Waukesha metro · about 8% above the US average installer wage.
No BLS metro wage series for Madison; we use Wisconsin regional price parity instead.
Source: U.S. Bureau of Labor Statistics, OEWS metro wages for HVAC installers (used as a trade-labor index).
Cheapest time for flat roof replacement in either city
Shingles need warm, dry weather to seal, and demand peaks after summer storms. Booking in the slow late-fall/winter window for a spring install often earns you off-season pricing.
Where does a smart roofing budget go in 2026?
The real cost of a roof comes down to three decisions: tear-off or overlay, which shingle tier, and what condition the decking is in. Our editors weigh in.
The do-it-right case
Pay for a full tear-off and quality underlayment, flashing and ventilation. An overlay saves money today but traps heat, voids some warranties and costs more at the next replacement.
The value case
Architectural shingles sit between bargain 3-tab and premium metal or tile, and for most houses that middle ground is exactly right. They carry longer wind and wear ratings than 3-tab for a small step up in price, without the four-figure jump metal or tile demands.
The risk case
Budget for the unknown: rotten decking found at tear-off is the most common surprise. Get the per-sheet repair rate in writing up front so a "cheap" bid doesn't balloon mid-job.
Insist on tear-off over overlay, get the deck-repair rate in writing before work starts, and lean toward architectural shingles. Skipping any of the three tends to cost more later than it saves now.
Greenfield vs Madison
Is flat roof replacement cheaper in Greenfield or Madison?
Madison wins on price: flat roof replacement runs about $10,350 there versus $11,100 in Greenfield, a gap of roughly $750 (7%) as of 2026.
Why does flat roof replacement cost more in Greenfield than Madison?
It comes down to labor: Greenfield indexes at 1.05 against Madison's 0.98. The cold-vs-cold climate difference adds to the gap.
How much is flat roof replacement in Greenfield, WI?
flat roof replacement in Greenfield runs $5,700–$16,500 as of 2026 — most jobs land near $11,100.
When is the cheapest time to buy flat roof replacement — and does it differ by city?
No, the seasonal pattern is the same in Greenfield and Madison: book during Late spring to early fall (dry, 45–85°F) for about 5–10% in savings. Mid-winter and the post-storm rush is the priciest stretch in both cities, mostly due to emergency replacements.
Should I choose where to live based on flat roof replacement cost?
Probably not. Yes, $750 is a real gap, but it's a one-time cost you can partly offset in Greenfield with off-season timing and tighter bids. Long-term factors like energy prices and home condition matter more than this one number.
Compare flat roof replacement in other cities
Updated June 2026 · By Serhat Özçelik