37 insulation contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Gantt: Crawl Space Brothers, CR Score 91/100; 4.9★ from 210 Google reviews; open 24/7.
Best for emergencies (open 24/7): TVL Insulation, posts 24/7 hours; ranked #2 of 37.
Most-reviewed: Southern Industries Home Improvements, 713 Google reviews at 4.6★, the most of 37 ranked; ranked #3.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
37 Gantt insulation contractors are ranked here by CR Score, from 8 published factors. 5 are open 24/7, 21 open Saturdays and 8 open Sundays, based on posted hours. The median Google rating is 4.8★ across 37 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Crawl Space Brothers | 91 | 4.9★ (210) | Greenville, 8 mi away | 24/7 | Overall |
| 2 | TVL Insulation | 88 | 5.0★ (20) | Gantt | 24/7 | Emergencies |
| 3 | Southern Industries Home Improvements | 85 | 4.6★ (713) | Greenville, 8 mi away | 24/7 | Most reviews |
| 4 | Comfort Shield Insulation | 85 | 4.8★ (40) | Greenville, 4 mi away | Sat · Sun · Evenings | — |
| 5 | Atwood & Son | 84 | 4.4★ (14) | Greenville, 3 mi away | 24/7 | — |
| 6 | Koala Insulation of Greenville | 84 | 4.9★ (444) | Piedmont, 2 mi away | — | — |
| 7 | Ace Handyman Services Upstate South Carolina and Greenville | 82 | 4.9★ (533) | Taylors, 10 mi away | — | — |
| 8 | Alpha Spray Foam Insulation & Crawlspace Encapsulation Greenville SC | 81 | 5.0★ (24) | Greenville, 2 mi away | Sat | — |
| 9 | Upstate Home Maintenance Services LLC | 81 | 4.9★ (160) | Greer, 21 mi away | Sat · Evenings | — |
| 10 | A-1 Insulation | 79 | 4.8★ (56) | Greenville, 17 mi away | Sat | — |
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: 4.9★ from 210 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Gantt
Ranked #2 because of its Google rating and availability: 5.0★ from 20 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Greenville, 8 mi away
Ranked #3 because of its Google rating and review volume: 4.6★ from 713 Google reviews, the most Google reviews on this list (713).
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Greenville, 4 mi away
Ranked #4 because of its Google rating and trade focus: 4.8★ from 40 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Greenville, 3 mi away
Ranked #5 because of its Google rating and availability: 4.4★ from 14 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Piedmont, 2 mi away
Ranked #6 because of its Google rating and trade focus: 4.9★ from 444 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Taylors, 10 mi away
Ranked #7 because of its Google rating and trade focus: 4.9★ from 533 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Greenville, 2 mi away
Ranked #8 because of its Google rating and trade focus: 5.0★ from 24 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Greer, 21 mi away
Ranked #9 because of its Google rating and trade focus: 4.9★ from 160 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Greenville, 17 mi away
Ranked #10 because of its Google rating and trade focus: 4.8★ from 56 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Greer, 19 mi away
Ranked #11 because of its Google rating and trade focus: 5.0★ from 31 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Simpsonville, 9 mi away
Ranked #12 because of its Google rating and availability: 4.1★ from 38 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Greenville, 7 mi away
Ranked #13 because of its Google rating and availability: 4.4★ from 93 Google reviews, open 7 days a week.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Greenville, 2 mi away
Ranked #14 because of its Google rating and trade focus: 5.0★ from 18 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Greenville, 6 mi away
Ranked #15 because of its Google rating and trade focus: 3.9★ from 36 Google reviews, listed on Google as “Insulation contractor”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in Simpsonville, 15 mi away
Ranked #16 because of its Google rating and availability: 4.8★ from 90 Google reviews, open 7 days a week.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Berea, 4 mi away
Ranked #17 because of its Google rating and trade focus: 4.8★ from 26 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Greenville, 17 mi away
Ranked #18 because of its Google rating and trade focus: 5.0★ from 29 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Greenville, 20 mi away
Ranked #19 because of its Google rating and trade focus: 4.8★ from 10 Google reviews, listed on Google as “Insulation contractor”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in Greenville, 5 mi away
Ranked #20 because of its Google rating and trade focus: 4.6★ from 23 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Piedmont, 5 mi away
Ranked #21 because of its Google rating and trade focus: 4.3★ from 6 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Anderson, 21 mi away
Ranked #22 because of its Google rating and trade focus: 5.0★ 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 Greenville, 1 mi away
Ranked #23 because of its Google rating and review volume: 4.9★ from 131 Google reviews, 131 Google reviews.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Anderson, 19 mi away
Ranked #24 because of its Google rating and trade focus: 4.4★ from 16 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Greenville, 6 mi away
Ranked #25 because of its Google rating and trade focus: 5.0★ from 3 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 #37, in CR Score order; each links to its profile.
| Rank | Business | CR Score | Google rating | Distance |
|---|---|---|---|---|
| 26 | Punch Services Upstate | 73 | 1.8★ (5) | 8 mi |
| 27 | Sopko Solar | 73 | 5.0★ (9) | In Gantt |
| 28 | South Carolina Spray Foam Insulation | 73 | 5.0★ (10) | 25 mi |
| 29 | Gale Contractor Services | 72 | 3.4★ (17) | 1 mi |
| 30 | Glenco Foam & Insulation | 71 | 5.0★ (14) | 19 mi |
| 31 | 31-W Insulation | 71 | 3.8★ (20) | 11 mi |
| 32 | Blue Ridge Building Products | 71 | 4.8★ (11) | 17 mi |
| 33 | Extreme Spray Foam of Anderson | 69 | 5.0★ (9) | 24 mi |
| 34 | Discount Crawl Space | 69 | 5.0★ (19) | 22 mi |
| 35 | Thing | 66 | 1.6★ (56) | 4 mi |
| 36 | American Eagle Home Improvement and Insulation | 66 | 3.5★ (27) | 22 mi |
| 37 | My Energy Masters | 64 | 5.0★ (4) | 7 mi |
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 |
|---|---|---|
| Airnest insulation | 4 mi | |
| Bernoulli Insulation Contractors, Inc. | 6 mi | |
| Etc | In Gantt | |
| Foam Insulation Greenville SC | 10 mi | |
| Foothills Insulation Inc | 3 mi | |
| Galloway Bell Inc | 5.0★ (1) | 3 mi |
| Galloway Insulation | 5.0★ (1) | 2 mi |
| Glenco Foam & Insulation, Inc | 6 mi | |
| Hot Attic Services Pro | 3 mi | |
| HydroHelp911 Crawl Space & Foundation Repair | 5.0★ (1) | 7 mi |
| Insulation Commandos of Greenville | 5 mi | |
| Insulation Commandos of Greenville | 10 mi | |
| Lamar Foam Insulation | 5.0★ (1) | 15 mi |
| Matias Insulation Service | 5.0★ (1) | 6 mi |
| Repairgenics Home Repair, LLC | In Gantt | |
| Sealing Solutions | 1.0★ (1) | 13 mi |
| Spray Foam Insulation Contractor | Greenville, SC | 5.0★ (1) | 10 mi |
| SprayTech Spray Foam | 3 mi | |
| The Spray Foam Insulation Specialists | 3 mi | |
| Vernon Insulation Co | 5.0★ (1) | 9 mi |
National price ranges in USD, not adjusted for Gantt. 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 37 Gantt 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 Gantt 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 |