36 insulation contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Oak Ridge: R & M Climate Control Service Experts, CR Score 94/100; 4.9★ from 2,257 Google reviews; open 24/7.
Best for emergencies (open 24/7): Ark Home Insulation, posts 24/7 hours; ranked #8 of 36.
Most-reviewed: Alta Pest Control, 1,192 Google reviews at 4.7★, the most of 36 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
36 Oak Ridge insulation contractors are ranked here by CR Score, from 8 published factors. 4 are open 24/7, 14 open Saturdays and 7 open Sundays, based on posted hours. The median Google rating is 4.8★ across 36 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | R & M Climate Control Service Experts | 94 | 4.9★ (2,257) | Knoxville, 10 mi away | 24/7 | Overall |
| 2 | Forever Guard Crawl Space Encapsulation and Repair of Knoxville | 86 | 5.0★ (90) | Knoxville, 8 mi away | Sat · Sun · Evenings | — |
| 3 | Alta Pest Control | 83 | 4.7★ (1,192) | Knoxville, 12 mi away | Sat | Most reviews |
| 4 | Volunteer Insulation LLC | 80 | 5.0★ (44) | Maryville, 23 mi away | Sat · Sun · Evenings | — |
| 5 | Koala Insulation of Greater Knoxville | 80 | 5.0★ (345) | Knoxville, 11 mi away | — | — |
| 6 | iFOAM Insulation | 80 | 4.6★ (13) | Knoxville, 10 mi away | — | — |
| 7 | Crawl Space Ninja | 79 | 4.9★ (546) | Knoxville, 15 mi away | — | — |
| 8 | Ark Home Insulation | 79 | 5.0★ (6) | Clinton, 13 mi away | 24/7 | Emergencies |
| 9 | One Way Air | 79 | 5.0★ (22) | Knoxville, 11 mi away | 24/7 | — |
| 10 | Southern Industries Home Improvements | 79 | 4.6★ (430) | Knoxville, 22 mi away | 24/7 | — |
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, 8 mi away
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, 12 mi away
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 Maryville, 23 mi away
Ranked #4 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, 11 mi away
Ranked #5 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, 10 mi away
Ranked #6 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, 15 mi away
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 Clinton, 13 mi away
Ranked #8 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 Knoxville, 11 mi away
Ranked #9 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, 22 mi away
Ranked #10 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 Alcoa, 22 mi away
Ranked #11 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, 19 mi away
Ranked #12 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 Knoxville, 14 mi away
Ranked #13 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, 10 mi away
Ranked #14 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, 16 mi away
Ranked #15 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, 15 mi away
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 Knoxville, 21 mi away
Ranked #17 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, 13 mi away
Ranked #18 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, 21 mi away
Ranked #19 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, 15 mi away
Ranked #20 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, 13 mi away
Ranked #21 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.
Based in Pigeon Forge, 23 mi away
Ranked #22 because of its Google rating and review volume: 5.0★ from 95 Google reviews, 95 Google reviews.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Farragut, 20 mi away
Ranked #23 because of its Google rating and trade focus: 5.0★ 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, 22 mi away
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, 17 mi away
Ranked #25 because of its Google rating and review volume: 4.9★ from 377 Google reviews, 377 Google reviews.
Based on 6 of 8 factors; credentials and recency not yet collected.
National price ranges in USD, not adjusted for Oak Ridge. 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 36 Oak Ridge 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 Oak Ridge 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 |