66 insulation contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in South Gastonia: The CrawlSpace King, CR Score 89/100; 5.0★ from 251 Google reviews; open 24/7.
Best for emergencies (open 24/7): GSM Services, posts 24/7 hours; ranked #2 of 66.
Most-reviewed: GSM Services, 3,506 Google reviews at 4.9★, the most of 66 ranked; ranked #2.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
66 South Gastonia insulation contractors are ranked here by CR Score, from 8 published factors. 8 are open 24/7, 32 open Saturdays and 15 open Sundays, based on posted hours. The median Google rating is 4.9★ across 66 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | The CrawlSpace King | 89 | 5.0★ (251) | Shelby, 15 mi away | 24/7 | Overall |
| 2 | GSM Services | 89 | 4.9★ (3,506) | Gastonia, 4 mi away | 24/7 | Emergencies, Most reviews |
| 3 | Crawl Space Brothers | 88 | 5.0★ (309) | Charlotte, 20 mi away | 24/7 | — |
| 4 | Koala Insulation of Greater Charlotte | 85 | 4.9★ (86) | Charlotte, 19 mi away | 24/7 | — |
| 5 | Simon Quality Construction | 84 | 5.0★ (166) | Charlotte, 19 mi away | Sat · Sun · Evenings | — |
| 6 | Michael Co Inc | 80 | 4.7★ (12) | Gastonia, 19 mi away | 24/7 | — |
| 7 | Distribution International: | 80 | 4.7★ (3) | Gastonia, 4 mi away | — | — |
| 8 | Fort Mill Spray Foam Insulation | 79 | 4.9★ (14) | Gastonia, 11 mi away | Sat · Sun | — |
| 9 | iFOAM Insulation | 79 | 4.9★ (29) | Fort Mill, 18 mi away | — | — |
| 10 | D.A.H Insulation Services | 79 | 4.4★ (7) | Charlotte, 11 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 availability: 5.0★ from 251 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Gastonia, 4 mi away
Ranked #2 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, 20 mi away
Ranked #3 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, 19 mi away
Ranked #4 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, 19 mi away
Ranked #5 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 Gastonia, 19 mi away
Ranked #6 because of its Google rating and availability: 4.7★ from 12 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Gastonia, 4 mi away
Ranked #7 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 Gastonia, 11 mi away
Ranked #8 because of its Google rating and trade focus: 4.9★ from 14 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Fort Mill, 18 mi away
Ranked #9 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 Charlotte, 11 mi away
Ranked #10 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 Gastonia, 3 mi away
Ranked #11 because of its Google rating and availability: 4.7★ from 12 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Monroe, 13 mi away
Ranked #12 because of its Google rating and trade focus: 5.0★ from 219 Google reviews, listed on Google as “Construction company”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Charlotte, 22 mi away
Ranked #13 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 Charlotte, 8 mi away
Ranked #14 because of its Google rating and trade focus: 4.8★ from 23 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Charlotte, 17 mi away
Ranked #15 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, 15 mi away
Ranked #16 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 Charlotte, 19 mi away
Ranked #17 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, 21 mi away
Ranked #18 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 Huntersville, 24 mi away
Ranked #19 because of its Google rating and availability: 5.0★ from 64 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Charlotte, 25 mi away
Ranked #20 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 Charlotte, 21 mi away
Ranked #21 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, 16 mi away
Ranked #22 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 Lincolnton, 13 mi away
Ranked #23 because of its Google rating and trade focus: 5.0★ from 70 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Charlotte, 20 mi away
Ranked #24 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, 15 mi away
Ranked #25 because of its Google rating and trade focus: 5.0★ from 11 Google reviews, listed on Google as “Insulation contractor”.
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 66 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 |
|---|---|---|
| Color Master Contractors | 19 mi | |
| DBI insulation service | 17 mi | |
| GreenPro Moisture Remediation | 5.0★ (1) | 22 mi |
| Heritage Encon Group Inc | 2.0★ (1) | 13 mi |
| Home Free Home Inspection LLC | 5.0★ (1) | 21 mi |
| Insulate America | 19 mi | |
| Insulate America | 20 mi | |
| M.M.I. Moisture, Mold, Insulation | 5.0★ (2) | 11 mi |
| Metrolina Insulation | 3.0★ (1) | 10 mi |
| MultiService Industrial | 5.0★ (1) | 23 mi |
| Pacor Insulation | 5.0★ (1) | 8 mi |
| Performance Contracting Inc. | 2.5★ (2) | 22 mi |
| Precise Thermal | 18 mi | |
| R.S. BLYTHE, INC. | 1.0★ (1) | 20 mi |
| Styro Systems Carolinas | 4.0★ (1) | 25 mi |
| Uniquely Green Insulation of Charlotte NC | 12 mi | |
| United Energy Solutions | 3.0★ (2) | 23 mi |
| Unitherm | 4.0★ (2) | 13 mi |
| Vastago Insulation | 5.0★ (1) | 6 mi |
| Wills Insulation LLC | 5.0★ (2) | 22 mi |
National price ranges in USD, not adjusted for South Gastonia. 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 66 South Gastonia 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 South Gastonia 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 |