42 insulation contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Knoxville: R & M Climate Control Service Experts, CR Score 96/100; 4.9★ from 2,257 Google reviews; open 24/7.
Best for emergencies (open 24/7): Southern Industries Home Improvements, posts 24/7 hours; ranked #5 of 42.
Most-reviewed: Alta Pest Control, 1,192 Google reviews at 4.7★, the most of 42 ranked after R & M Climate Control Service Experts; ranked #3.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
42 Knoxville insulation contractors are ranked here by CR Score, from 8 published factors. 5 are open 24/7, 16 open Saturdays and 9 open Sundays, based on posted hours. The median Google rating is 4.9★ across 42 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | R & M Climate Control Service Experts | 96 | 4.9★ (2,257) | Knoxville | 24/7 | Overall |
| 2 | Forever Guard Crawl Space Encapsulation and Repair of Knoxville | 88 | 5.0★ (90) | Knoxville | Sat · Sun · Evenings | — |
| 3 | Alta Pest Control | 86 | 4.7★ (1,192) | Knoxville | Sat | Most reviews |
| 4 | AFS Foundation & Waterproofing Specialists | 85 | 4.9★ (973) | Knoxville | Sat · Sun · Evenings | — |
| 5 | Southern Industries Home Improvements | 84 | 4.6★ (430) | Knoxville | 24/7 | Emergencies |
| 6 | Koala Insulation of Greater Knoxville | 83 | 5.0★ (345) | Knoxville | — | — |
| 7 | Crawl Space Ninja | 83 | 4.9★ (546) | Knoxville | — | — |
| 8 | iFOAM Insulation | 83 | 4.6★ (13) | Knoxville | — | — |
| 9 | Alpha | 83 | 5.0★ (38) | Knoxville | Sat · Evenings | — |
| 10 | Volunteer Insulation LLC | 83 | 5.0★ (44) | Maryville, 14 mi away | Sat · Sun · Evenings | — |
Ordered by CR Score, a 0–100 score from 8 published factors. Paid placement never changes the order.
Ranked #1 because of its Google rating and review volume: 4.9★ from 2,257 Google reviews, the most Google reviews on this list (2,257).
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Knoxville
Ranked #2 because of its Google rating and trade focus: 5.0★ from 90 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Knoxville
Ranked #3 because of its Google rating and trade focus: 4.7★ from 1,192 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Knoxville
Ranked #4 because of its Google rating and review volume: 4.9★ from 973 Google reviews, 973 Google reviews.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Knoxville
Ranked #5 because of its Google rating and availability: 4.6★ from 430 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Knoxville
Ranked #6 because of its Google rating and trade focus: 5.0★ from 345 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Knoxville
Ranked #7 because of its Google rating and trade focus: 4.9★ from 546 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Knoxville
Ranked #8 because of its Google rating and trade focus: 4.6★ from 13 Google reviews, listed on Google as “Insulation contractor”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in Knoxville
Ranked #9 because of its Google rating and trade focus: 5.0★ from 38 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Maryville, 14 mi away
Ranked #10 because of its Google rating and trade focus: 5.0★ from 44 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Knoxville
Ranked #11 because of its Google rating and availability: 5.0★ from 22 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Knoxville
Ranked #12 because of its Google rating and trade focus: 4.2★ from 16 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Knoxville
Ranked #13 because of its Google rating and trade focus: 4.9★ from 20 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Knoxville
Ranked #14 because of its Google rating and trade focus: 4.9★ from 184 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Knoxville
Ranked #15 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “Insulation contractor”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in Knoxville
Ranked #16 because of its Google rating and trade focus: 4.7★ from 3 Google reviews, listed on Google as “Insulation contractor”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in Sevierville, 22 mi away
Ranked #17 because of its Google rating and availability: 5.0★ from 216 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Clinton, 8 mi away
Ranked #18 because of its Google rating and trade focus: 5.0★ from 6 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Alcoa, 12 mi away
Ranked #19 because of its Google rating and trade focus: 4.9★ from 92 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Knoxville
Ranked #20 because of its Google rating and review volume: 4.9★ from 392 Google reviews, 392 Google reviews.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Knoxville
Ranked #21 because of its Google rating and trade focus: 4.7★ from 74 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Knoxville
Ranked #22 because of its Google rating and trade focus: 4.9★ from 28 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Knoxville
Ranked #23 because of its Google rating and trade focus: 5.0★ from 26 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Knoxville
Ranked #24 because of its Google rating and trade focus: 5.0★ from 17 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Knoxville
Ranked #25 because of its Google rating and review volume: 4.8★ from 83 Google reviews, 83 Google reviews.
Based on 6 of 8 factors; credentials and recency not yet collected.
#1 to #25 are shown in full above. Here are #26 to #42, in CR Score order; each links to its profile.
| Rank | Business | CR Score | Google rating | Distance |
|---|---|---|---|---|
| 26 | Ace Handyman Services West Knoxville | 76 | 4.9★ (377) | In Knoxville |
| 27 | Extreme Spray Foam of Knoxville | 76 | 5.0★ (16) | 5 mi |
| 28 | Crawl Space Ninja | 76 | 5.0★ (9) | In Knoxville |
| 29 | Profoam of Tennessee | 75 | 5.0★ (6) | In Knoxville |
| 30 | Cardwell Insulation | 74 | 4.2★ (6) | 24 mi |
| 31 | BrandSafway Solutions Knoxville | 74 | 4.8★ (4) | In Knoxville |
| 32 | CFI Insulation | 74 | 4.0★ (4) | In Knoxville |
| 33 | A-1 Certified Service, Inc. | 74 | 4.7★ (277) | In Knoxville |
| 34 | Valor Insulation LLC | 73 | 4.4★ (7) | In Knoxville |
| 35 | RetroFoam of East Tennessee | 73 | 4.8★ (98) | In Knoxville |
| 36 | TopLine Home Services | 72 | 4.8★ (62) | In Knoxville |
| 37 | Insta Dri, LLC | 72 | 4.8★ (55) | In Knoxville |
| 38 | Dale Insulation of Knoxville | 71 | 3.4★ (16) | 10 mi |
| 39 | Barnes Exterminating and Pest Control Company | 68 | 4.8★ (37) | 11 mi |
| 40 | American Foundation & Waterproofing | 68 | 4.6★ (124) | 15 mi |
| 41 | Performance Contracting Inc | 66 | 2.4★ (7) | In Knoxville |
| 42 | Knoxville Premier Painting | 65 | 2.8★ (10) | In Knoxville |
20 more insulation contractors within 25 mi that we can't rank yet: too few reviews, or a trade we couldn't confirm. Listed A to Z.
| Business | Google rating | Distance |
|---|---|---|
| Accu-Coat Knoxville | In Knoxville | |
| AdvantaClean of Knoxville & The Smokies | 5.0★ (204) | In Knoxville |
| Associated Equipment Co Inc | 4.6★ (25) | In Knoxville |
| Blass Construction Company | 4.7★ (58) | In Knoxville |
| Breeding Insulation | 3.5★ (2) | In Knoxville |
| EnergyRight Solutions | 3.9★ (7) | In Knoxville |
| Firestop Technologies | 5.0★ (2) | 7 mi |
| Forks River Construction | 4.5★ (31) | In Knoxville |
| Green River LLC | In Knoxville | |
| Industrial Products Co. | 1.0★ (1) | In Knoxville |
| McCamy Construction | 4.3★ (9) | In Knoxville |
| MI Homesiding LLC Roofing | 5.0★ (52) | In Knoxville |
| Old City Kitchens | 4.8★ (166) | In Knoxville |
| Patterson's Home Insulation | 3.0★ (2) | 15 mi |
| Pinnacle Home Improvements | 4.6★ (370) | In Knoxville |
| RetroFoam | In Knoxville | |
| Rocky Top Drywall | In Knoxville | |
| SERVPRO of Rocky Hill, Sequoyah Hills, South Knoxville | 4.9★ (677) | In Knoxville |
| The Premier Handyman | 4.8★ (110) | In Knoxville |
| Witt Building Material Co Inc | 4.5★ (51) | In Knoxville |
National price ranges in USD, not adjusted for Knoxville. Each row names its basis and the month we checked it.
| Job | Low | Typical | High | Basis | Checked |
|---|---|---|---|---|---|
| Attic insulation | $1,700 | $2,100 | $2,500 | Per attic: typical range of customer-reported jobs (about $1 to $3 per sq ft). US national range | October 2026 |
We scored 42 Knoxville insulation contractors on 8 factors, weighted as shown. A business is ranked when its trade is confirmed and it has 3 or more Google reviews or a claimed profile. Unknown factors are left out of the score, not counted as zero. Scores last refreshed October 22, 2026.
Paid placement never changes a rank or score. Featured businesses are paid, labelled, limited to 3 and shown above the ranking, outside it.
| Factor | Weight | Computed from | In Knoxville data |
|---|---|---|---|
| Reputation | 35% | Bayesian-adjusted Google star rating | Measured |
| Credentials | 15% | Active state license 0.6, bond 0.2, workers’ comp 0.2 | Not yet collected |
| Review volume | 10% | log10(reviews + 1) against the list maximum | Measured |
| Recency | 10% | Share of reviews from the last 12 months | Not yet collected |
| Availability | 10% | Weekly open hours, Saturday, Sunday, 24/7 or same-day | Measured |
| Trade focus | 10% | Google main category 1.0, business name 0.7, additional category 0.5 | Measured |
| Proximity | 5% | 1.0 when based in the city, falling to 0 at the trade’s radius | Measured |
| Completeness | 5% | Website, photos, description, hours, claimed profile (0.2 each) | Measured |