Flat Roof Replacement cost: Billings vs Missoula (2026)
Budget-wise, flat roof replacement in Billings ($10,050) runs 1% more than in Missoula ($9,950), a roughly $100 spread.
Billings MT
Typically around $10,050
Missoula MT
Lower costTypically around $9,950
Billings vs Missoula: full breakdown
| Factor | Billings | Missoula |
|---|---|---|
| Typical 2026 cost | $10,050 | $9,950 |
| Estimated range | $5,150–$14,950 | $5,100–$14,750 |
| Labor index (vs US) | ×0.95 | ×0.94 |
| Climate zone | Cold | Cold |
| Climate factor | ×1.03 | ×1.03 |
| Local permit | $250 | $250 |
| Labor share | $6,050 | $5,950 |
| Materials/equipment | $4,000 | $4,000 |
Localized 2026 planning estimates — not quotes. Each city adjusts the national flat roof replacement range for local labor, climate and permits.
Is the price difference a dealbreaker?
At 1%, this gap is small enough that it's usually swallowed by normal quote-to-quote variation for flat roof replacement — focus on the contractor, not the city.
Flat roof replacement by type: Billings vs Missoula
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 | Billings | Missoula |
|---|---|---|
| EPDM (rubber) | $5,150–$12,000 | $5,100–$11,850 |
| TPO | $6,150–$13,000 | $6,050–$12,850 |
| PVC | $7,100–$14,950 | $7,050–$14,750 |
| Modified bitumen | $5,150–$11,050 | $5,100–$10,900 |
| Built-up roofing (BUR) | $6,600–$14,000 | $6,550–$13,800 |
These are 2026 planning figures for flat roof replacement, localized to each city — not formal quotes.
Flat roof replacement by roof size: Billings vs Missoula
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 | Billings | Missoula |
|---|---|---|
| 1,000 sq ft (10 squares) | $4,150–$8,600 | $4,100–$8,500 |
| 1,500 sq ft (15 squares) | $5,150–$11,050 | $5,100–$10,900 |
| 2,000 sq ft (20 squares) | $6,150–$14,000 | $6,050–$13,800 |
| 2,500 sq ft (25 squares) | $7,600–$15,950 | $7,500–$15,750 |
| 3,000+ sq ft (30 squares) | $9,100–$18,900 | $8,950–$18,650 |
All figures are 2026 localized planning estimates for flat roof replacement — get an actual quote before you commit.
Cheapest time for flat roof replacement in either city
The material dictates the season (shingles need warmth to seal), but the price is set by demand, and demand spikes after every regional hailstorm. Booking your spot in the quiet winter months for spring work avoids that spike.
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 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.
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.
Whatever the headline bid says, the roof that lasts is the one installed on a bare, sound deck with the repair price fixed in advance. Overlays and open-ended decking charges are where a cheap quote turns expensive down the line.
Billings vs Missoula
Is flat roof replacement cheaper in Billings or Missoula?
Missoula wins on price: flat roof replacement runs about $9,950 there versus $10,050 in Billings, a gap of roughly $100 (1%) as of 2026.
Why does flat roof replacement cost more in Billings than Missoula?
The main driver is local labor rates: Billings's labor index is 0.95 versus 0.94 in Missoula. Climate zone (cold vs cold) also shift the total.
How much is flat roof replacement in Billings, MT?
flat roof replacement in Billings 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?
The best window is the same in both Billings and Missoula: 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?
Rarely. The $100 difference is real but one-time, and you can often close most of it in Billings by buying in the off-season and getting tighter, apples-to-apples bids. Ongoing factors — energy prices, climate and home condition — matter more over the life of the system.
Compare flat roof replacement in other cities
Updated June 2026 · By Serhat Özçelik