16 insulation contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Bay City: Koala Insulation of Mid-Michigan, CR Score 60/100; 4.7★ from 281 Google reviews.
Best for emergencies (open 24/7): J & J Contracting, posts 24/7 hours; ranked #14 of 16.
Most-reviewed: Storm Master Exteriors, 78 Google reviews at 4.7★, the most of 16 ranked after Koala Insulation of Mid-Michigan; ranked #11.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
16 Bay City insulation contractors are ranked here by CR Score, from ten published factors. 1 is open 24/7, 4 open Saturdays and 3 open Sundays, based on posted hours. The median Google rating is 4.7★ across 16 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Koala Insulation of Mid-Michigan | 60 | 4.7★ (281) | Saginaw, 9 mi away | — | Overall |
| 2 | Michigan Spray Foam Insulation | 56 | 5.0★ (27) | Koreatown, 15 mi away | Sat · Evenings | — |
| 3 | Cream Company | 56 | 4.0★ (43) | Bay City | — | — |
| 4 | Saginaw Spray Foam Insulation | 55 | 5.0★ (18) | Bridgeport, 8 mi away | — | — |
| 5 | MAG Insulation | 54 | 4.6★ (29) | Midland, 10 mi away | — | — |
| 6 | BrandSafway Industries Bay City | 53 | 4.7★ (3) | Bay City | — | — |
| 7 | Do It Drywall | 51 | 5.0★ (73) | Bridgeport, 11 mi away | — | — |
| 8 | T & C Insulation | 51 | 3.7★ (3) | Saginaw, 13 mi away | — | — |
| 9 | A-1 Insulation Co of Saginaw | 51 | 1.0★ (3) | Saginaw, 10 mi away | — | — |
| 10 | G E Co | 50 | 5.0★ (6) | Midland, 23 mi away | — | — |
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 review volume: 4.7★ from 281 Google reviews, the most in Bay City.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Koreatown, 15 mi away
Ranked #2 because of its Google rating and trade focus: 5.0★ from 27 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Bay City
Ranked #3 because of its Google rating and trade focus: 4.0★ from 43 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Bridgeport, 8 mi away
Ranked #4 because of its Google rating and trade focus: 5.0★ from 18 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Midland, 10 mi away
Ranked #5 because of its Google rating and trade focus: 4.6★ from 29 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Bay City
Ranked #6 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 Bridgeport, 11 mi away
Ranked #7 because of its Google rating and review volume: 5.0★ from 73 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Saginaw, 13 mi away
Ranked #8 because of its Google rating and trade focus: 3.7★ from 3 Google reviews, listed on Google as “Insulation contractor”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Saginaw, 10 mi away
Ranked #9 because of its Google rating and trade focus: 1.0★ from 3 Google reviews, listed on Google as “Insulation contractor”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Midland, 23 mi away
Ranked #10 because of its Google rating and trade focus: 5.0★ from 6 Google reviews, listed on Google as “Insulation contractor”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Freeland, 12 mi away
Ranked #11 because of its Google rating and review volume: 4.7★ from 78 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Bridgeport, 18 mi away
Ranked #12 because of its Google rating and trade focus: 5.0★ from 25 Google reviews, listed on Google as “Roofing contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Bridgeport, 23 mi away
Ranked #13 because of its Google rating and trade focus: 4.6★ from 10 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Saginaw, 17 mi away
Ranked #14 because of its Google rating and availability: 3.3★ from 14 Google reviews, open 24/7.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Bridgeport, 12 mi away
Ranked #15 because of its Google rating and trade focus: 5.0★ from 5 Google reviews, listed on Google as “Roofing contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Bridgeport, 15 mi away
Ranked #16 because of its Google rating and trade focus: 4.6★ from 5 Google reviews, listed on Google as “Roofing contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
16 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 |
|---|---|---|
| ASI Improvement & Roofing - Bay City | 5.0★ (1) | In Bay City |
| Bay City Roofers | 4.6★ (19) | In Bay City |
| Blanket Pro Insulation | 16 mi | |
| Bondy Insulation - Midland, MI | 16 mi | |
| Elliot Environmental | 5.0★ (117) | In Bay City |
| Energy Solutions Insulation | 12 mi | |
| Foam Tec | 3.0★ (2) | 22 mi |
| G.E. Insulation Co. | 15 mi | |
| Haertel Heating & Cooling | 4.9★ (373) | In Bay City |
| Irex Advanced Industrial | 18 mi | |
| McCoy Heating & Cooling | 4.4★ (127) | In Bay City |
| Midwest | In Bay City | |
| Midwest Spray Foam Insulation | 5.0★ (1) | In Bay City |
| Phoenix Home Performance | 5.0★ (1) | 10 mi |
| Thermico Inc | 15 mi | |
| USA Insulation of Mid Michigan | 15 mi |
National price ranges in USD, not adjusted for Bay City. 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 16 Bay City 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 Bay City 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 |