30 insulation contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Wentzville: iFOAM Insulation of O'Fallon, CR Score 61/100; 5.0★ from 113 Google reviews; open 24/7.
Best for emergencies (open 24/7): West County Insulation, posts 24/7 hours; ranked #3 of 30.
Most-reviewed: Moxie Pest Control, 3,165 Google reviews at 4.6★, the most of 30 ranked; ranked #16.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
30 Wentzville insulation contractors are ranked here by CR Score, from ten published factors. 8 are open 24/7, 15 open Saturdays and 12 open Sundays, based on posted hours. The median Google rating is 4.9★ across 30 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | iFOAM Insulation of O'Fallon | 61 | 5.0★ (113) | O'Fallon, 7 mi away | 24/7 | Overall |
| 2 | Foam Co. | 58 | 4.9★ (155) | Saint Peters, 14 mi away | Sat · Sun | — |
| 3 | West County Insulation | 58 | 5.0★ (129) | St. Louis, 23 mi away | 24/7 | Emergencies |
| 4 | Buckingham Pest Control | 58 | 5.0★ (937) | Saint Peters, 17 mi away | — | — |
| 5 | Air Comfort Service Inc. | 57 | 5.0★ (1,159) | Saint Peters, 15 mi away | 24/7 | — |
| 6 | West County Insulation | 55 | 5.0★ (5) | O'Fallon, 9 mi away | 24/7 | — |
| 7 | Bug Out | 55 | 5.0★ (185) | Saint Peters, 10 mi away | 24/7 | — |
| 8 | Better Home Insulation | 55 | 4.9★ (160) | Chesterfield, 20 mi away | Sun · Evenings | — |
| 9 | Air Comfort Service, Inc. | 55 | 4.9★ (2,041) | Hazelwood, 25 mi away | 24/7 | — |
| 10 | Bone Dry Roofing | 55 | 4.7★ (575) | Saint Peters, 12 mi away | 24/7 | — |
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Scores below: based on 8 of 10 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.
Ranked #1 because of its Google rating and trade focus: 5.0★ from 113 Google reviews, listed on Google as “Insulation contractor”.
Based in Saint Peters, 14 mi away
Ranked #2 because of its Google rating and trade focus: 4.9★ from 155 Google reviews, listed on Google as “Insulation contractor”.
Based in St. Louis, 23 mi away
Ranked #3 because of its Google rating and trade focus: 5.0★ from 129 Google reviews, listed on Google as “Insulation contractor”.
Based in Saint Peters, 17 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 in Saint Peters, 15 mi away
Ranked #5 because of its Google rating and review volume: 5.0★ from 1,159 Google reviews.
Based in O'Fallon, 9 mi away
Ranked #6 because of its Google rating and trade focus: 5.0★ from 5 Google reviews, listed on Google as “Insulation contractor”.
Based in Saint Peters, 10 mi away
Ranked #7 because of its Google rating and review volume: 5.0★ from 185 Google reviews.
Based in Chesterfield, 20 mi away
Ranked #8 because of its Google rating and trade focus: 4.9★ from 160 Google reviews, listed on Google as “Insulation contractor”.
Based in Hazelwood, 25 mi away
Ranked #9 because of its Google rating and review volume: 4.9★ from 2,041 Google reviews.
Based in Saint Peters, 12 mi away
Ranked #10 because of its Google rating and review volume: 4.7★ from 575 Google reviews.
Based in Bridgeton, 22 mi away
Ranked #11 because of its Google rating and trade focus: 4.9★ from 528 Google reviews, listed on Google as “Insulation contractor”.
Based in O'Fallon, 8 mi away
Ranked #12 because of its Google rating and trade focus: 4.8★ from 69 Google reviews, listed on Google as “Insulation contractor”.
Based in Chesterfield, 16 mi away
Ranked #13 because of its Google rating and trade focus: 5.0★ from 24 Google reviews, listed on Google as “Insulation contractor”.
Based in Saint Peters, 11 mi away
Ranked #14 because of its Google rating and trade focus: 4.9★ from 35 Google reviews, listed on Google as “Insulation contractor”.
Based in Warrenton, 10 mi away
Ranked #15 because of its Google rating and trade focus: 4.5★ from 24 Google reviews, listed on Google as “Insulation contractor”.
Based in Bridgeton, 23 mi away
Ranked #16 because of its Google rating and review volume: 4.6★ from 3,165 Google reviews, the most in Wentzville.
Based in Saint Peters, 17 mi away
Ranked #17 because of its Google rating and trade focus: 5.0★ from 8 Google reviews, listed on Google as “Insulation contractor”.
Based in Saint Charles, 14 mi away
Ranked #18 because of its Google rating and trade focus: 3.7★ from 3 Google reviews, listed on Google as “Insulation contractor”.
Based in Pacific, 24 mi away
Ranked #19 because of its Google rating and availability: 5.0★ from 39 Google reviews, open 24/7.
Based in Saint Charles, 19 mi away
Ranked #20 because of its Google rating and trade focus: 4.7★ from 14 Google reviews, listed on Google as “Insulation contractor”.
Based in Maryland Heights, 22 mi away
Ranked #21 because of its Google rating and trade focus: 4.2★ from 10 Google reviews, listed on Google as “Insulation contractor”.
Based in Saint Peters, 21 mi away
Ranked #22 because of its Google rating and trade focus: 4.2★ from 9 Google reviews, listed on Google as “Insulation contractor”.
Based in Maryland Heights, 25 mi away
Ranked #23 because of its Google rating and trade focus: 4.3★ from 21 Google reviews, listed on Google as “Insulation contractor”.
Based in Ballwin, 25 mi away
Ranked #24 because of its Google rating and review volume: 4.9★ from 377 Google reviews.
Based in East Saint Louis, 19 mi away
Ranked #25 because of its Google rating and trade focus: 4.8★ from 19 Google reviews, listed on Google as “Dry wall contractor”.
#1 to #25 are shown in full above. Here are #26 to #30, in CR Score order; each links to its profile.
| Rank | Business | CR Score | Google rating | Distance |
|---|---|---|---|---|
| 26 | Luna's Improvement Inc | 46 | 5.0★ (12) | 14 mi |
| 27 | Thermaltech, Inc. | 46 | 2.3★ (3) | 20 mi |
| 28 | Con-Tech Insulation LLC | 46 | 3.5★ (19) | 24 mi |
| 29 | St Charles Painting & Remodeling | 45 | 4.9★ (16) | 14 mi |
| 30 | ShowMe Roofing & Exteriors | 44 | 4.8★ (19) | 23 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 |
|---|---|---|
| air barrier spray foam systems | 12 mi | |
| All-time foam insulators | 5.0★ (2) | 12 mi |
| Crown Insulation LLC | 20 mi | |
| Divine Insulation Solutions | 16 mi | |
| Elite Heating and Cooling | 5.0★ (476) | In Wentzville |
| Ellisvilles Insulation Solutions | 5.0★ (1) | 9 mi |
| Frontline Home Solutions | 16 mi | |
| Industrial Construction And Engineering | 1.0★ (1) | 13 mi |
| Johnson Heating and Cooling | 4.7★ (88) | In Wentzville |
| Marquez Home Renovations | 20 mi | |
| Midtown Home Improvements | 4.1★ (1,651) | In Wentzville |
| MNH Services LLC | 7 mi | |
| Pro Insulation Inc | 13 mi | |
| SERVPRO of Western O'Fallon/Wentzville | 4.8★ (68) | In Wentzville |
| Sundermeyer Ltd. | 5.0★ (2) | 23 mi |
| TMI Coatings, LLC | In Wentzville | |
| Wentzville Insulation | 5.0★ (2) | 15 mi |
| West County Insulation | 16 mi | |
| West County Insulation | 19 mi | |
| Wooding Heating and Cooling | 5.0★ (7) | In Wentzville |
National price ranges in USD, not adjusted for Wentzville. 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 30 Wentzville 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 Wentzville 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 |