Flat Roof Replacement cost: Collierville vs Knoxville (2026)
The two metros aren't quite in sync on flat roof replacement: Collierville sits 1% above Knoxville, or roughly $9,850 versus $9,750 — about $100 apart.
Collierville TN
Typically around $9,850
Knoxville TN
Lower costTypically around $9,750
Collierville vs Knoxville: full breakdown
| Factor | Collierville | Knoxville |
|---|---|---|
| Typical 2026 cost | $9,850 | $9,750 |
| Estimated range | $5,050–$14,650 | $5,000–$14,450 |
| Labor index (vs US) | ×0.96 | ×0.95 |
| Climate zone | Mixed | Mixed |
| Climate factor | ×1 | ×1 |
| Local permit | $250 | $250 |
| Labor share | $5,900 | $5,850 |
| Materials/equipment | $3,950 | $3,900 |
All figures are 2026 localized planning estimates for flat roof replacement — get an actual quote before you commit.
Is the gap worth worrying about?
That 1% gap is small — for flat roof replacement it's usually less than the spread between two local contractors' quotes, so the metro matters far less than who you hire and when you buy.
Flat roof replacement by type: Collierville vs Knoxville
Every flat roof replacement type gets its own localized price for each metro, using the same labor, climate and permit adjustments — a true apples-to-apples comparison.
| Type | Collierville | Knoxville |
|---|---|---|
| EPDM (rubber) | $5,050–$11,750 | $5,000–$11,600 |
| TPO | $6,000–$12,700 | $5,950–$12,550 |
| PVC | $6,950–$14,650 | $6,850–$14,450 |
| Modified bitumen | $5,050–$10,800 | $5,000–$10,650 |
| Built-up roofing (BUR) | $6,500–$13,650 | $6,400–$13,500 |
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: Collierville 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 | Collierville | Knoxville |
|---|---|---|
| 1,000 sq ft (10 squares) | $4,100–$8,400 | $4,050–$8,300 |
| 1,500 sq ft (15 squares) | $5,050–$10,800 | $5,000–$10,650 |
| 2,000 sq ft (20 squares) | $6,000–$13,650 | $5,950–$13,500 |
| 2,500 sq ft (25 squares) | $7,450–$15,600 | $7,350–$15,400 |
| 3,000+ sq ft (30 squares) | $8,900–$18,450 | $8,750–$18,200 |
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
About 60% of a flat roof replacement bill goes to labor, so wage differences between these two metros matter more than almost anything else. These are real, government-sourced (BLS OEWS) installer wages, not estimates.
Memphis metro · about 7% 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
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?
Before you compare roofing bids, know that the biggest variables are hidden: whether the crew tears off or lays over, what grade of shingle goes down, and what the decking looks like once it's exposed. Each one can shift the total well past the advertised price.
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
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.
Insist on tear-off over overlay, get the deck-repair rate in writing before work starts, and lean toward architectural shingles. Skipping any of the three tends to cost more later than it saves now.
Collierville vs Knoxville
Is flat roof replacement cheaper in Collierville or Knoxville?
In 2026, flat roof replacement is cheaper in Knoxville at about $9,750, versus $9,850 in Collierville — a difference of about $100 (1%).
Why does flat roof replacement cost more in Collierville than Knoxville?
It comes down to labor: Collierville indexes at 0.96 against Knoxville's 0.95. The mixed-vs-mixed climate difference adds to the gap.
How much is flat roof replacement in Collierville, TN?
Collierville homeowners can expect $5,050 to $14,650 for flat roof replacement in 2026, with $9,850 the typical number.
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 Collierville 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 $100 difference is real but one-time, and you can often close most of it in Collierville 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