Knoxville, TN · Flat Roof

Flat Roof Contractors in Knoxville, Tennessee

Commercial or residential flat roof — compare local roofing companies. 25 local roofers listed, 4 verified.

Short answer: Flat and low-slope roofs in Knoxville are usually TPO ($5.50–$9 a sq ft installed), EPDM ($4.50–$8) or modified bitumen ($3–$7); the membrane lasts 15–25 years, mostly decided by how well the drains are kept clear. In Knoxville: 9.2 heavy-rain days a year (1 inch+). 4 of the roofers below have a license we checked; for any other, ask for a license number and a certificate of insurance.

Get a free quote See Knoxville in numbers
  • 9.2heavy-rain days a year (1 inch+)
  • 54.3 inrain a year
  • 24days a year at 90°F or hotter
  • 43%of homes are not single-family houses

How much life is left in my Knoxville roof?

Typical lifespans are published ranges for each material; for a Knoxville house, real life also depends on installation, attic ventilation and the weather Knoxville gets.

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Flat and low-slope roofs in Knoxville perform reliably when drainage is maintained and membrane seams and penetrations are inspected annually — most flat roof leaks trace to neglected drains or failed seals around HVAC units and vents. Common flat roof systems in Knoxville include TPO (heat-welded, energy-efficient), EPDM (durable rubber membrane), and modified bitumen — each with different cost, longevity, and maintenance profiles worth discussing with a local contractor.

Knoxville in numbers

Public records for Knoxville and its county, not estimates. Each figure shows its source.

  • #11of 209Knoxville ranks #11 of the 209 cities we cover for damaging thunderstorm-wind days.
  • #169of 209Knoxville ranks #169 of the 209 cities we cover for largest hailstone on record (low end).
  • #43of 209Knoxville ranks #43 of the 209 cities we cover for yearly rainfall.

Hail reports per year in the county

Hail events per year in the county, 2017 to 2025 5 2017 2 2018 1 2019 1 2020 1 2021 8 2023 3 2024 16 2025
Hail events per year in the county, 2017 to 2025
20175
20182
20191
20201
20211
20238
20243
202516

37 recorded events across 8 years represented in the data. 2025 had the most events among represented full years: 16.

Years without a data row: 2022. Missing rows are not treated as zero; no annual average is shown.

Source: NOAA hail events, county level · data as of 2017–2025

Costliest storm day on record

Aug 7, 2023

3 reports that day (2 wind, 1 tornado); reported property damage $3,700,000; county FIPS 47093, 2014–June 2026

Source: NOAA Storm Events · data as of 2014–June 2026

When storms hit Knoxville

Hail reports by month in the county, all years combined 0 Jan 1 Feb 3 Mar 11 Apr 11 May 5 Jun 5 Jul 2 Aug 9 Sep 1 Oct 0 Nov 0 Dec
Hail reports by month in the county, all years combined
Jan0
Feb1
Mar3
Apr11
May11
Jun5
Jul5
Aug2
Sep9
Oct1
Nov0
Dec0

Most hail reports come in April; the season runs March to September. Book inspections and repairs before that window, not after.

Source: NOAA Storm Events · data as of 2014–June 2026

Roofing trade around Knoxville

  • 34 roofing companies with payroll in the county, employing about 361 people; 53% have fewer than 5 employees.
  • A roofer's median pay here is $45,030 a year (Knoxville, TN Metro Area).
Source: Census CBP · data as of 2023 Source: BLS OEWS, roofers · data as of May 2025

Knoxville storm record: Knox County

What the National Weather Service logged in Knox County in 2014–2026. County level, because storm reports are filed by county, not by city limits.

  • 1786Founded
  • 886 ft (270 m)Elevation
  • Henry KnoxNamed after

Where hail of 1 inch or more was reported in Knox County

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  • 371 to 1.74 in
  • 71.75 to 2.74 in, golf ball to tennis ball
  • 02.75 in and up, baseball

Largest plotted stone: 1.75 in. Bigger dots are bigger stones.

44 reports of 1 inch or larger have coordinates. Each dot is a reported location, not a storm path.

Sources: NOAA, Census county outline

Biggest hail days

DateLargest hailReports that dayWhere it was reported
September 4, 2025 1.75 in, about the size of a golf ball 9 Beaver Ridge
April 10, 2025 1.75 in, about the size of a golf ball 6 Solway
May 2, 2016 1.75 in, about the size of a golf ball 3 Farragut
“A cold front pushing through the Mid-South in an environment of 30 knots of effective shear and plenty of CAPE fueled several severe thunderstorms that tracked across portions of East Tennessee, producing several instances of severe wind damage and severe hail.”
National Weather Service report, September 4, 2025
Source: NOAA Storm Events Database · data as of 2014–2026

Last big hail on record

September 4, 2025

Hail of 1.75 inches (golf ball) or larger fell on 6 days in 2014–2026. Our records end where NOAA's do, so a newer storm may not be listed yet.

Strongest tornado

EF2 · August 7, 2023

It stayed on the ground for 3.7 miles and was up to 200 yards wide. The tornado started on Yarnell Road, then reached peak intensity and width as it passed the Lovell Crossing apartment complex.

Strongest thunderstorm gust

72 mph · May 20, 2025

What it means for flat roof

Flat and low-slope roofs hold hail on the surface instead of letting it bounce. With 1.75-inch hail on record in Knox County, ask what membrane and cover board the contractor specifies.

Storm data: NOAA Storm Events (public domain). City facts: Wikidata (CC0).

What it costs in Knoxville

Asphalt-shingle re-roof, 2,000 sq ft home, adjusted for Knoxville labor and material prices. Your quote depends on roof size, pitch and scope.

That typical price is about 4.7% of the median Knoxville home value ($214,000).

Source: Census ACS (Knoxville city) · data as of 2019–2023

Full Knoxville cost guide by material →

Roofers in Knoxville, TN

25 listed, first 20 shown. Roofers we verified against a public registry come first.

This list covers roofing companies generally. Confirm flat roof experience, materials, insurance and current availability with each company. A Verified badge refers to the registry check, not a confirmed specialty.

Flat Roof in Knoxville: questions

How do I find a flat roof company in Knoxville?
PickARoofer lists roofing companies serving Knoxville, TN. This is a general roofing directory; confirm flat roof experience and availability with each company. A Verified badge describes a separate registry check, not a confirmed service specialty or insurance check. Confirm scope, insurance and availability directly. Requests go to one contractor at a time, with up to three attempts; a response or start date is not guaranteed. Free for homeowners.
Should I repair or fully re-roof in Knoxville?
Ask a roofer to document the damage and compare a written repair scope with a replacement estimate. Roof condition, remaining life, materials and the extent of damage affect the decision. Confirm any inspection fee before booking.
When is hail season in Knoxville?
April is the worst month: 23% of the 48 hail reports NOAA holds for the county came then. Reports run from March to September. Book the inspection before March, while crews still have open dates.
How big does hail get near Knoxville?
The largest hail NOAA logged near Knoxville measured 1.75 inches, about the size of a golf ball. Hail of an inch or more fell on 22 days in the same record. The biggest day was September 4, 2025, with 9 reports. The National Weather Service calls hail of 1 inch or larger severe; the bigger the stone, the more likely it is to crack a shingle.
How old are the homes in Knoxville, and does it matter for the roof?
The median home in Knoxville was built in 1974, and 59.4% of homes date from before 1980 (Census ACS). A roof on a home that old has often been re-covered at least once, so ask the roofer whether there is a second layer underneath: it changes the tear-off cost. The area sees about 66 freeze-thaw days a year, which loosens flashing and sealant.
What does roofing cost in Knoxville?
For an average 2,000 sq ft home we model asphalt-shingle re-roof at $6,230 to $13,795 in Knoxville, around $10,000 in the middle. That is about 4.7% of the median home value of $214,000. Your quote moves with roof size, pitch and how many layers come off.
How many roofing companies work around Knoxville?
The Census Bureau counts 34 roofing companies with payroll in Knox County, employing about 361 people. 52.9% of them have fewer than five employees, so most quotes come from owner-run crews. A roofer's median pay is $45,030 a year (BLS).
How long does a flat roof last in Knoxville?
A properly installed flat roof in Knoxville lasts 15 to 25 years depending on material and maintenance. TPO and EPDM systems at the higher end; modified bitumen at the lower end without coating renewal. The biggest variable is drainage maintenance: a flat roof that drains properly and gets annual inspections reaches its rated lifespan; one with chronically clogged drains fails years early. Commercial buildings and multi-family properties benefit from a maintenance agreement that includes two drain clearings per year.
What is the difference between TPO, EPDM, and modified bitumen for Knoxville properties?
TPO (thermoplastic polyolefin) uses heat-welded seams and a white reflective surface — the current industry standard for new commercial and residential flat roofs, best for energy efficiency. EPDM (ethylene propylene diene monomer) is a rubber membrane installed with taped or adhesive seams — very durable and forgiving, widely used on residential flat roofs for decades. Modified bitumen is a reinforced asphalt sheet applied by torch or cold adhesive — economical and familiar to many local Knoxville contractors, though it runs warmer than TPO and may require more frequent coating. Cost, pitch, and building type typically dictate the right choice — a Knoxville flat-roof specialist can walk you through the tradeoffs for your specific structure.
Do I need a permit for flat roof in Tennessee?
Permit requirements depend on the property, scope of work and local jurisdiction. Check with the city or county building department and confirm who will obtain any required permit before work starts.

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Figures above: NOAA Storm Events Database (hail, wind, tornado; county of the city, 2014–2026), U.S. Census Bureau American Community Survey 5-year estimates (housing), NASA POWER (temperature and rain, 2014–2023). Prices: our published price method. How we collect data.