Flat Roof Replacement cost: Brentwood vs Knoxville (2026)
In 2026, flat roof replacement is about 2% more expensive in Brentwood than in Knoxville. Most homeowners pay around $9,950 in Brentwood versus $9,750 in Knoxville — a gap of roughly $200.
Brentwood TN
Typically around $9,950
Knoxville TN
Lower costTypically around $9,750
Brentwood vs Knoxville: full breakdown
| Factor | Brentwood | Knoxville |
|---|---|---|
| Typical 2026 cost | $9,950 | $9,750 |
| Estimated range | $5,100–$14,750 | $5,000–$14,450 |
| Labor index (vs US) | ×0.97 | ×0.95 |
| Climate zone | Mixed | Mixed |
| Climate factor | ×1 | ×1 |
| Local permit | $275 | $250 |
| Labor share | $5,950 | $5,850 |
| Materials/equipment | $4,000 | $3,900 |
Flat roof replacement numbers here are 2026 planning ranges, adjusted per city — useful for budgeting, not a substitute for an actual quote.
How much should this gap actually matter?
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: Brentwood vs Knoxville
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 | Brentwood | Knoxville |
|---|---|---|
| EPDM (rubber) | $5,100–$11,850 | $5,000–$11,600 |
| TPO | $6,050–$12,850 | $5,950–$12,550 |
| PVC | $7,050–$14,750 | $6,850–$14,450 |
| Modified bitumen | $5,100–$10,900 | $5,000–$10,650 |
| Built-up roofing (BUR) | $6,550–$13,800 | $6,400–$13,500 |
All figures are 2026 localized planning estimates for flat roof replacement — get an actual quote before you commit.
Flat roof replacement by roof size: Brentwood vs Knoxville
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 | Brentwood | Knoxville |
|---|---|---|
| 1,000 sq ft (10 squares) | $4,150–$8,500 | $4,050–$8,300 |
| 1,500 sq ft (15 squares) | $5,100–$10,900 | $5,000–$10,650 |
| 2,000 sq ft (20 squares) | $6,050–$13,800 | $5,950–$13,500 |
| 2,500 sq ft (25 squares) | $7,500–$15,750 | $7,350–$15,400 |
| 3,000+ sq ft (30 squares) | $8,950–$18,650 | $8,750–$18,200 |
Treat these as 2026 localized estimates for flat roof replacement, not quotes from a contractor.
What roofing pros earn in each metro
Since labor accounts for around 60% of what a flat roof replacement job costs, it's the biggest lever behind any price gap between cities. What you're seeing below is actual BLS metro wage data for skilled installers — not a guess.
Nashville-Davidson--Murfreesboro--Franklin metro · about 6% below the US average installer wage.
No BLS metro wage series for Knoxville; we use Tennessee 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
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?
Two roofs of the same square footage can price hundreds apart because of something you can't see from the ground — the deck under the old shingles. Add the tear-off-versus-overlay call and the shingle grade, and you have the decisions that actually move the number.
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 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 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.
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.
Brentwood vs Knoxville
Is flat roof replacement cheaper in Brentwood or Knoxville?
In 2026, flat roof replacement is cheaper in Knoxville at about $9,750, versus $9,950 in Brentwood — a difference of about $200 (2%).
Why does flat roof replacement cost more in Brentwood than Knoxville?
The main driver is local labor rates: Brentwood's labor index is 0.97 versus 0.95 in Knoxville. Climate zone (mixed vs mixed) and permit fees also shift the total.
How much is flat roof replacement in Brentwood, TN?
Expect to pay $5,100 to $14,750 for flat roof replacement in Brentwood in 2026, averaging around $9,950.
When is the cheapest time to buy flat roof replacement — and does it differ by city?
It doesn't vary by location — Late spring to early fall (dry, 45–85°F) is the discount window in both Brentwood and Knoxville (roughly 5–10% off), while mid-winter and the post-storm rush tends to be the most expensive in either city.
Should I choose where to live based on flat roof replacement cost?
Rarely. The $200 difference is real but one-time, and you can often close most of it in Brentwood 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