Flat Roof Replacement cost: Green Bay vs Greenfield (2026)
In 2026, flat roof replacement is about 11% less expensive in Green Bay than in Greenfield. Most homeowners pay around $10,000 in Green Bay versus $11,100 in Greenfield — a gap of roughly $1,100.
Green Bay WI
Lower costTypically around $10,000
Greenfield WI
Typically around $11,100
Green Bay vs Greenfield: full breakdown
| Factor | Green Bay | Greenfield |
|---|---|---|
| Typical 2026 cost | $10,000 | $11,100 |
| Estimated range | $5,100–$14,850 | $5,700–$16,500 |
| Labor index (vs US) | ×0.95 | ×1.05 |
| Climate zone | Cold | Cold |
| Climate factor | ×1.03 | ×1.03 |
| Local permit | $250 | $275 |
| Labor share | $6,000 | $6,650 |
| Materials/equipment | $4,000 | $4,450 |
Treat these as 2026 localized estimates for flat roof replacement, not quotes from a contractor.
Is the price difference a dealbreaker?
11% (about $1,100) is enough to notice on a flat roof replacement budget. Timing the purchase for the off-season and pushing for an apples-to-apples bid in Greenfield can close much of that gap.
Flat roof replacement by type: Green Bay vs Greenfield
We localize each flat roof replacement type separately for both metros, applying the same labor, climate and permit adjustments each time, so you're comparing like for like.
| Type | Green Bay | Greenfield |
|---|---|---|
| EPDM (rubber) | $5,100–$11,950 | $5,700–$13,250 |
| TPO | $6,100–$12,900 | $6,750–$14,350 |
| PVC | $7,050–$14,850 | $7,850–$16,500 |
| Modified bitumen | $5,100–$10,950 | $5,700–$12,200 |
| Built-up roofing (BUR) | $6,600–$13,900 | $7,300–$15,400 |
All figures are 2026 localized planning estimates for flat roof replacement — get an actual quote before you commit.
Flat roof replacement by roof size: Green Bay vs Greenfield
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 | Green Bay | Greenfield |
|---|---|---|
| 1,000 sq ft (10 squares) | $4,150–$8,550 | $4,600–$9,450 |
| 1,500 sq ft (15 squares) | $5,100–$10,950 | $5,700–$12,200 |
| 2,000 sq ft (20 squares) | $6,100–$13,900 | $6,750–$15,400 |
| 2,500 sq ft (25 squares) | $7,550–$15,850 | $8,400–$17,600 |
| 3,000+ sq ft (30 squares) | $9,000–$18,750 | $10,000–$20,850 |
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.
No BLS metro wage series for Green Bay; we use Wisconsin regional price parity instead.
Milwaukee-Waukesha metro · about 8% above the US average installer wage.
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
Roofers are slammed the moment warm weather returns, especially after storms. Get on their books in the off-season for a spring job and you're negotiating with an empty calendar, not a waiting list.
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
A full tear-off lets the crew replace underlayment, flashing and ventilation while the deck is exposed — the layers that actually keep water out. Covering old shingles with new ones costs less on install day, but the trapped heat shortens shingle life, and many manufacturers won't honor a warranty on an overlay.
The value case
Architectural shingles hit the sweet spot — far more durable than 3-tab for a modest premium, and far cheaper than metal or tile. For most homes they're the right default.
The risk case
Nail down the per-sheet decking rate in writing before anyone climbs up. Soft or rotted plywood is the most common mid-job discovery, and without an agreed number the crew names the price after they've already found the damage — turning a cheap quote into an open tab.
Judge a roofing bid on its scope, not its bottom line — a genuine tear-off, a documented per-sheet deck rate, and a mid-grade architectural shingle. Those three close the gaps that let a low storm-season number balloon over the years.
Green Bay vs Greenfield
Is flat roof replacement cheaper in Green Bay or Greenfield?
Yes — Greenfield costs more. Expect around $11,100 for flat roof replacement there against $10,000 in Green Bay, about $1,100 (11%) apart in 2026.
Why does flat roof replacement cost more in Greenfield than Green Bay?
The main driver is local labor rates: Greenfield's labor index is 1.05 versus 0.95 in Green Bay. Climate zone (cold vs cold) and permit fees also shift the total.
How much is flat roof replacement in Green Bay, WI?
flat roof replacement in Green Bay runs $5,100–$14,850 as of 2026 — most jobs land near $10,000.
When is the cheapest time to buy flat roof replacement — and does it differ by city?
Timing doesn't change by city here — Late spring to early fall (dry, 45–85°F) is the cheapest window in both Green Bay and Greenfield, saving roughly 5–10%. Avoid mid-winter and the post-storm rush in either location, when emergency replacements push prices up.
Should I choose where to live based on flat roof replacement cost?
That would be a stretch. $1,100 is a one-time difference, not an ongoing one, and off-season buying plus apples-to-apples bids in Greenfield can close a good chunk of it. What matters more long-term is energy costs, climate and the condition of the home.
Compare flat roof replacement in other cities
Updated June 2026 · By Serhat Özçelik