31 insulation contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Upper Alton: West County Insulation, CR Score 58/100; 5.0★ from 129 Google reviews; open 24/7.
Best for emergencies (open 24/7): Air Comfort Service, Inc., posts 24/7 hours; ranked #2 of 31.
Most-reviewed: Moxie Pest Control, 3,165 Google reviews at 4.6★, the most of 31 ranked; ranked #11.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
31 Upper Alton insulation contractors are ranked here by CR Score, from ten published factors. 5 are open 24/7, 13 open Saturdays and 8 open Sundays, based on posted hours. The median Google rating is 4.8★ across 31 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | West County Insulation | 58 | 5.0★ (129) | St. Louis, 22 mi away | 24/7 | Overall |
| 2 | Air Comfort Service, Inc. | 57 | 4.9★ (2,041) | Hazelwood, 16 mi away | 24/7 | Emergencies |
| 3 | Mid States Spray Foam | 57 | 5.0★ (10) | Godfrey, 2 mi away | Sat · Sun · Evenings | — |
| 4 | Buckingham Pest Control | 56 | 5.0★ (937) | Saint Peters, 24 mi away | — | — |
| 5 | Koala Insulation of Gateway West & Metro East IL | 56 | 4.9★ (528) | Bridgeton, 18 mi away | — | — |
| 6 | Gateway RetroFoam LLC | 55 | 4.9★ (86) | Warrenton, 19 mi away | — | — |
| 7 | Central Mechanical Insulation | 54 | 4.1★ (8) | East Alton, 4 mi away | — | — |
| 8 | Janssen Heating Cooling Plumbing & Insulation | 53 | 5.0★ (52) | East Alton, 5 mi away | Sat | — |
| 9 | Energy Stars Heating & Cooling Co | 53 | 4.9★ (1,175) | East Saint Louis, 15 mi away | Sat | — |
| 10 | Brady Pest Solutions | 53 | 4.8★ (36) | Collinsville, 18 mi away | Sat | — |
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Ranked #1 because of its Google rating and trade focus: 5.0★ from 129 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Hazelwood, 16 mi away
Ranked #2 because of its Google rating and review volume: 4.9★ from 2,041 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Godfrey, 2 mi away
Ranked #3 because of its Google rating and trade focus: 5.0★ from 10 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Saint Peters, 24 mi away
Ranked #4 because of its Google rating and trade focus: 5.0★ from 937 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Bridgeton, 18 mi away
Ranked #5 because of its Google rating and trade focus: 4.9★ from 528 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Warrenton, 19 mi away
Ranked #6 because of its Google rating and trade focus: 4.9★ from 86 Google reviews, listed on Google as “Insulation contractor”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in East Alton, 4 mi away
Ranked #7 because of its Google rating and trade focus: 4.1★ from 8 Google reviews, listed on Google as “Insulation contractor”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in East Alton, 5 mi away
Ranked #8 because of its Google rating and trade focus: 5.0★ from 52 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in East Saint Louis, 15 mi away
Ranked #9 because of its Google rating and review volume: 4.9★ from 1,175 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Collinsville, 18 mi away
Ranked #10 because of its Google rating and trade focus: 4.8★ from 36 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Bridgeton, 18 mi away
Ranked #11 because of its Google rating and review volume: 4.6★ from 3,165 Google reviews, the most in Upper Alton.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in St. Louis, 20 mi away
Ranked #12 because of its Google rating and review volume: 4.9★ from 87 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Berkeley, 24 mi away
Ranked #13 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Troy, 18 mi away
Ranked #14 because of its Google rating and trade focus: 4.8★ from 24 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Maryville, 16 mi away
Ranked #15 because of its Google rating and availability: 4.6★ from 38 Google reviews, open 24/7.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in St. Louis, 19 mi away
Ranked #16 because of its Google rating and review volume: 4.9★ from 72 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in St. Louis, 22 mi away
Ranked #17 because of its Google rating and trade focus: 5.0★ from 5 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Saint Peters, 25 mi away
Ranked #18 because of its Google rating and trade focus: 5.0★ from 8 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Saint Charles, 20 mi away
Ranked #19 because of its Google rating and trade focus: 4.7★ from 14 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Maryland Heights, 20 mi away
Ranked #20 because of its Google rating and trade focus: 4.3★ from 21 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in St. Louis, 20 mi away
Ranked #21 because of its Google rating and trade focus: 3.9★ from 20 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Maryland Heights, 21 mi away
Ranked #22 because of its Google rating and trade focus: 4.2★ from 10 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Saint Peters, 20 mi away
Ranked #23 because of its Google rating and trade focus: 4.2★ from 9 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in St. Louis, 18 mi away
Ranked #24 because of its Google rating and trade focus: 4.7★ from 3 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in St. Louis, 24 mi away
Ranked #25 because of its Google rating and trade focus: 3.9★ from 13 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
#1 to #25 are shown in full above. Here are #26 to #31, in CR Score order; each links to its profile.
| Rank | Business | CR Score | Google rating | Distance |
|---|---|---|---|---|
| 26 | Bi-State Insulation, Inc. | 46 | 5.0★ (3) | 23 mi |
| 27 | ShowMe Roofing & Exteriors | 44 | 4.8★ (19) | 22 mi |
| 28 | St. Louis Ceiling Installers LLC | 43 | 4.9★ (16) | 22 mi |
| 29 | All Star & Roofing | 41 | 4.3★ (6) | 22 mi |
| 30 | BROCK INDUSTRIAL | 41 | 3.9★ (10) | 22 mi |
| 31 | Clayton Restoration Company | 39 | 2.3★ (3) | 25 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 |
|---|---|---|
| AbsoSeal Injection | 4.5★ (2) | 19 mi |
| Acme Fire Proofing & Installation | 5.0★ (1) | 19 mi |
| Bay Insulation of Missouri Inc | 5.0★ (1) | 21 mi |
| Crown Insulation LLC | 21 mi | |
| D&L Painting and Drywall | 2.0★ (1) | 18 mi |
| Dardenne Insulation Solutions | 1.0★ (1) | 16 mi |
| Diversified Painting & Contracting, LLC | 18 mi | |
| Gonz Insulation | 5.0★ (2) | 24 mi |
| Greenmark Home Performance, LLC | 1.0★ (1) | 24 mi |
| Grizealy Home Remodeling | 21 mi | |
| Insulation Masters, Inc. | 19 mi | |
| ISS Insulation Services & Solutions | 20 mi | |
| KB Insulation and Drywall, LLC | 19 mi | |
| M.I.S Insulation | 19 mi | |
| Manchesters Insulation Solutions | 11 mi | |
| Paragon Pipecoverers, Inc. Mechanical Insulation Contractor | 5.0★ (1) | 17 mi |
| Sidney Insulation Inc | 5.0★ (1) | 21 mi |
| St. Louis Insulation Pros | 20 mi | |
| Sundermeyer Ltd. | 5.0★ (2) | 18 mi |
| West County Insulation | 21 mi |
National price ranges in USD, not adjusted for Upper Alton. 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 31 Upper Alton insulation contractors on ten 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. A business with no Google reviews scores zero on rating, review volume and recency. Other unknown factors are left out, 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 Upper Alton data |
|---|---|---|---|
| Reputation | 25% | Google star rating, adjusted for how many reviews back it | Measured |
| Credentials | 15% | Active state license, bond and workers’ comp on file | Not yet collected |
| Review volume | 10% | Number of Google reviews, compared with the most-reviewed business on the list | Measured |
| Recency | 5% | Share of reviews from the last 12 months | Not yet collected |
| Availability | 5% | Weekly open hours, Saturday, Sunday, 24/7 or same-day | Measured |
| Trade focus | 10% | How clearly the business does this trade (its Google category and name) | Measured |
| Proximity | 5% | Based in the city scores highest, less the farther away it is | Measured |
| Claimed profile | 10% | The business has claimed its ContractorsRanked profile (free or paid earn the same) | Measured |
| Partnered | 5% | The business links to ContractorsRanked from its own website with our badge, checked periodically | Measured |
| ContractorsRanked reviews | 10% | Verified customer reviews collected by ContractorsRanked: their rating and how many there are | Measured |