Flat Roof Replacement cost: Des Moines vs Sioux City (2026)
Budget-wise, flat roof replacement in Des Moines ($10,050) runs 2% more than in Sioux City ($9,850), a roughly $200 spread.
Des Moines IA
Typically around $10,050
Sioux City IA
Lower costTypically around $9,850
Des Moines vs Sioux City: full breakdown
| Factor | Des Moines | Sioux City |
|---|---|---|
| Typical 2026 cost | $10,050 | $9,850 |
| Estimated range | $5,150–$14,950 | $5,050–$14,600 |
| Labor index (vs US) | ×0.95 | ×0.93 |
| Climate zone | Cold | Cold |
| Climate factor | ×1.03 | ×1.03 |
| Local permit | $250 | $250 |
| Labor share | $6,050 | $5,900 |
| Materials/equipment | $4,000 | $3,950 |
These are 2026 planning figures for flat roof replacement, localized to each city — not formal quotes.
Is the gap worth worrying about?
2% is within noise for flat roof replacement — contractor selection and timing move the price more than which of these two metros you're in.
Flat roof replacement by type: Des Moines vs Sioux City
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 | Des Moines | Sioux City |
|---|---|---|
| EPDM (rubber) | $5,150–$12,000 | $5,050–$11,700 |
| TPO | $6,150–$13,000 | $6,000–$12,700 |
| PVC | $7,100–$14,950 | $6,950–$14,600 |
| Modified bitumen | $5,150–$11,050 | $5,050–$10,750 |
| Built-up roofing (BUR) | $6,600–$14,000 | $6,450–$13,650 |
These are 2026 planning figures for flat roof replacement, localized to each city — not formal quotes.
Flat roof replacement by roof size: Des Moines vs Sioux City
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 | Des Moines | Sioux City |
|---|---|---|
| 1,000 sq ft (10 squares) | $4,150–$8,600 | $4,050–$8,350 |
| 1,500 sq ft (15 squares) | $5,150–$11,050 | $5,050–$10,750 |
| 2,000 sq ft (20 squares) | $6,150–$14,000 | $6,000–$13,650 |
| 2,500 sq ft (25 squares) | $7,600–$15,950 | $7,400–$15,550 |
| 3,000+ sq ft (30 squares) | $9,100–$18,900 | $8,850–$18,400 |
These are 2026 planning figures for flat roof replacement, localized to each city — not formal quotes.
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?
Tear-off vs. overlay, shingle tier and what's hidden under the deck decide the real number. Our editors on the trade-offs.
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
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.
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.
Des Moines vs Sioux City
Is flat roof replacement cheaper in Des Moines or Sioux City?
Sioux City comes out ahead here, at roughly $9,850 for flat roof replacement compared with $10,050 in Des Moines — a 2% ($200) gap as of 2026.
Why does flat roof replacement cost more in Des Moines than Sioux City?
It comes down to labor: Des Moines indexes at 0.95 against Sioux City's 0.93. The cold-vs-cold climate difference adds to the gap.
How much is flat roof replacement in Des Moines, IA?
flat roof replacement in Des Moines runs $5,150–$14,950 as of 2026 — most jobs land near $10,050.
When is the cheapest time to buy flat roof replacement — and does it differ by city?
No, the seasonal pattern is the same in Des Moines and Sioux City: 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?
Not really — the $200 gap is one-time, and smart timing and tighter quotes in Des Moines can shrink it. Factors that compound over time, like energy prices and home condition, deserve more weight than a single upfront difference.
Compare flat roof replacement in other cities
Updated June 2026 · By Serhat Özçelik