Flat Roof Replacement cost: Jacksonville vs St. Johns (2026)
There's essentially no price gap here: flat roof replacement runs close to $9,950 in both Jacksonville and St. Johns in 2026.
Jacksonville FL
Typically around $9,950
St. Johns FL
Typically around $9,950
Jacksonville vs St. Johns: full breakdown
| Factor | Jacksonville | St. Johns |
|---|---|---|
| Typical 2026 cost | $9,950 | $9,950 |
| Estimated range | $5,100–$14,750 | $5,100–$14,750 |
| Labor index (vs US) | ×0.94 | ×0.94 |
| Climate zone | Hot | Hot |
| Climate factor | ×1.02 | ×1.02 |
| Local permit | $275 | $275 |
| Labor share | $5,950 | $5,950 |
| Materials/equipment | $4,000 | $4,000 |
All figures are 2026 localized planning estimates for flat roof replacement — get an actual quote before you commit.
No real cost edge either way
The two metros are effectively a wash for flat roof replacement — pick on contractor quality and timing, not location.
Flat roof replacement by type: Jacksonville vs St. Johns
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 | Jacksonville | St. Johns |
|---|---|---|
| EPDM (rubber) | $5,100–$11,850 | $5,100–$11,850 |
| TPO | $6,050–$12,800 | $6,050–$12,800 |
| PVC | $7,000–$14,750 | $7,000–$14,750 |
| Modified bitumen | $5,100–$10,900 | $5,100–$10,900 |
| Built-up roofing (BUR) | $6,550–$13,750 | $6,550–$13,750 |
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: Jacksonville vs St. Johns
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 | Jacksonville | St. Johns |
|---|---|---|
| 1,000 sq ft (10 squares) | $4,150–$8,450 | $4,150–$8,450 |
| 1,500 sq ft (15 squares) | $5,100–$10,900 | $5,100–$10,900 |
| 2,000 sq ft (20 squares) | $6,050–$13,750 | $6,050–$13,750 |
| 2,500 sq ft (25 squares) | $7,500–$15,700 | $7,500–$15,700 |
| 3,000+ sq ft (30 squares) | $8,950–$18,600 | $8,950–$18,600 |
Treat these as 2026 localized estimates for flat roof replacement, not quotes from a contractor.
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.
Jacksonville metro · about 9% below the US average installer wage.
Jacksonville metro · about 9% below 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
Why summer costs more: it's the only stretch shingles seal reliably, so every storm-damaged roof in the region is competing for the same crews. Reserve a spring slot during the slow winter season and you're not in that queue.
Where does a smart roofing budget go in 2026?
Tear-off vs. overlay, shingle tier and what's hidden under the deck decide the real number. Our editors on the trade-offs.
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.
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 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.
Full tear-off, architectural shingles and a written deck-repair rate protect you from the two big risks — hidden rot and warranty gaps. The lowest storm-season bid is rarely the cheapest over the roof's life.
Jacksonville vs St. Johns
Is flat roof replacement cheaper in Jacksonville or St. Johns?
flat roof replacement costs about the same in both — roughly $9,950 in each city.
Why does flat roof replacement cost more in St. Johns than Jacksonville?
St. Johns's higher labor index (0.94 vs 0.94 in Jacksonville) is the biggest factor, with the hot/hot climate split playing a smaller role.
How much is flat roof replacement in Jacksonville, FL?
Jacksonville homeowners can expect $5,100 to $14,750 for flat roof replacement in 2026, with $9,950 the typical number.
Do roofing pros really charge more in one city?
They do, and the BLS wage data confirms it: installers earn about $28.3/hr around Jacksonville versus $28.3/hr near Jacksonville. With labor making up about 60% of a flat roof replacement job, that difference carries straight through to the final price.
When is the cheapest time to buy flat roof replacement — and does it differ by city?
The best window is the same in both Jacksonville and St. Johns: Late spring to early fall (dry, 45–85°F), when demand drops and installers discount to keep crews busy — typically 5–10% off peak pricing. The most expensive time anywhere is an emergency replacement during mid-winter and the post-storm rush.
Should I choose where to live based on flat roof replacement cost?
Cost shouldn't be the deciding factor between Jacksonville and St. Johns — they land at nearly the same price. Contractor reputation, scope, equipment tier and timing matter more.
Compare flat roof replacement in other cities
Updated June 2026 · By Serhat Özçelik