91 insulation contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Charlotte: Crawl Space Brothers, CR Score 93/100; 5.0★ from 309 Google reviews; open 24/7.
Best for emergencies (open 24/7): Koala Insulation of Greater Charlotte, posts 24/7 hours; ranked #2 of 91.
Most-reviewed: GSM Services, 3,506 Google reviews at 4.9★, the most of 91 ranked; ranked #5.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
91 Charlotte insulation contractors are ranked here by CR Score, from 8 published factors. 14 are open 24/7, 47 open Saturdays and 25 open Sundays, based on posted hours. The median Google rating is 4.9★ across 91 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Crawl Space Brothers | 93 | 5.0★ (309) | Charlotte | 24/7 | Overall |
| 2 | Koala Insulation of Greater Charlotte | 90 | 4.9★ (86) | Charlotte | 24/7 | Emergencies |
| 3 | Simon Quality Construction | 89 | 5.0★ (166) | Charlotte | Sat · Sun · Evenings | — |
| 4 | Crawl Space Brothers | 87 | 4.9★ (52) | Matthews, 10 mi away | 24/7 | — |
| 5 | GSM Services | 85 | 4.9★ (3,506) | Gastonia, 19 mi away | 24/7 | Most reviews |
| 6 | Home Shield Insulation of Charlotte | 84 | 4.9★ (136) | Charlotte | Sat · Evenings | — |
| 7 | Behr Insulation | 84 | 5.0★ (73) | Matthews, 11 mi away | Sat · Sun · Evenings | — |
| 8 | Koala Insulation of Greater South Charlotte | 84 | 4.4★ (18) | Matthews, 9 mi away | 24/7 | — |
| 9 | Standard Insulating Company | 84 | 5.0★ (620) | Charlotte | — | — |
| 10 | Crawl Space Ninja of Charlotte | 83 | 4.8★ (125) | Stallings, 13 mi away | Sat · Sun | — |
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 availability: 5.0★ from 309 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Charlotte
Ranked #2 because of its Google rating and availability: 4.9★ from 86 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Charlotte
Ranked #3 because of its Google rating and trade focus: 5.0★ from 166 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Matthews, 10 mi away
Ranked #4 because of its Google rating and availability: 4.9★ from 52 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Gastonia, 19 mi away
Ranked #5 because of its Google rating and review volume: 4.9★ from 3,506 Google reviews, the most Google reviews on this list (3,506).
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Charlotte
Ranked #6 because of its Google rating and trade focus: 4.9★ from 136 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Matthews, 11 mi away
Ranked #7 because of its Google rating and trade focus: 5.0★ from 73 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Matthews, 9 mi away
Ranked #8 because of its Google rating and availability: 4.4★ from 18 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Charlotte
Ranked #9 because of its Google rating and trade focus: 5.0★ from 620 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Stallings, 13 mi away
Ranked #10 because of its Google rating and trade focus: 4.8★ from 125 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Charlotte
Ranked #11 because of its Google rating and trade focus: 4.6★ from 18 Google reviews, listed on Google as “Insulation contractor”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in Charlotte
Ranked #12 because of its Google rating and trade focus: 5.0★ from 56 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Charlotte
Ranked #13 because of its Google rating and availability: 4.8★ from 73 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Charlotte
Ranked #14 because of its Google rating and trade focus: 5.0★ from 37 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Charlotte
Ranked #15 because of its Google rating and trade focus: 4.9★ from 66 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Charlotte
Ranked #16 because of its Google rating and trade focus: 5.0★ from 5 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Cornelius, 18 mi away
Ranked #17 because of its Google rating and availability: 4.8★ from 900 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Charlotte
Ranked #18 because of its Google rating and trade focus: 4.4★ from 7 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Charlotte
Ranked #19 because of its Google rating and review volume: 4.7★ from 526 Google reviews, 526 Google reviews.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Fort Mill, 10 mi away
Ranked #20 because of its Google rating and trade focus: 4.9★ from 29 Google reviews, listed on Google as “Insulation contractor”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in Matthews, 11 mi away
Ranked #21 because of its Google rating and availability: 4.8★ from 215 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Charlotte
Ranked #22 because of its Google rating and availability: 4.8★ from 257 Google reviews, open 7 days a week.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Charlotte
Ranked #23 because of its Google rating and trade focus: 4.3★ from 6 Google reviews, listed on Google as “Insulation contractor”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in Charlotte
Ranked #24 because of its Google rating and trade focus: 4.9★ from 200 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Charlotte
Ranked #25 because of its Google rating and review volume: 4.7★ from 2,444 Google reviews, 2,444 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 #50, in CR Score order; each links to its profile. We publish the top 50 of 91 ranked insulation contractors here; the rest are on their profiles.
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 |
|---|---|---|
| Acousti Engineering Company | 4.6★ (7) | In Charlotte |
| Apex Energy Solutions | 4.9★ (548) | In Charlotte |
| Arrowood's Drywall Service | 4.0★ (20) | In Charlotte |
| BCI Shingle Specialist | 5.0★ (14) | In Charlotte |
| Bumble Roofing of Charlotte | 5.0★ (38) | In Charlotte |
| Carrier Corporation | 3.6★ (139) | In Charlotte |
| CHS Construction Group | 4.9★ (36) | In Charlotte |
| Eastern Stucco Restorations | 5.0★ (2) | In Charlotte |
| Emergency Restoration Team LLC | 5.0★ (14) | In Charlotte |
| Greenserve | 4.8★ (42) | In Charlotte |
| JMD Drywall LLC | 4.9★ (81) | In Charlotte |
| JY CLT Waterproofing LLC | 4.6★ (11) | In Charlotte |
| K Plus Services | 5.0★ (1) | In Charlotte |
| MultiService Industrial | 5.0★ (1) | In Charlotte |
| Performance Acoustics, LLC | 4.8★ (26) | In Charlotte |
| Rhino Shield Carolina | 4.4★ (44) | In Charlotte |
| Roofers Supply of Greenville | 5.0★ (7) | In Charlotte |
| Tar Heel Basement Systems | 4.7★ (23) | In Charlotte |
| Unitherm | 4.0★ (2) | In Charlotte |
| Watershed Builders | 5.0★ (50) | In Charlotte |
National price ranges in USD, not adjusted for Charlotte. 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 91 Charlotte 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 Charlotte 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 |