15 insulation contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Portage: USA Insulation of Kalamazoo, CR Score 63/100; 4.8★ from 175 Google reviews; open Saturdays until 2 PM.
Best for emergencies (open 24/7): Worthy Construction LLC, posts 24/7 hours; ranked #5 of 15.
Most-reviewed: Clearview Roofing and Restoration, 290 Google reviews at 5.0★, the most of 15 ranked; ranked #4.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
15 Portage insulation contractors are ranked here by CR Score, from ten published factors. 1 is open 24/7, 6 open Saturdays and 3 open Sundays, based on posted hours. The median Google rating is 4.9★ across 15 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | USA Insulation of Kalamazoo | 63 | 4.8★ (175) | Portage | Sat | Overall |
| 2 | Mulder Insulation Inc. | 60 | 5.0★ (30) | Portage | Sat · Evenings | — |
| 3 | Precision Insulation Kalamazoo | 60 | 5.0★ (59) | Kalamazoo, 7 mi away | Sat · Evenings | — |
| 4 | Clearview Roofing and Restoration | 57 | 5.0★ (290) | Kalamazoo, 14 mi away | Sat · Sun · Evenings | Most reviews |
| 5 | Worthy Construction LLC | 57 | 4.9★ (63) | Kalamazoo, 5 mi away | 24/7 | Emergencies |
| 6 | Kasten Insulation Services Inc | 56 | 3.6★ (7) | Portage | — | — |
| 7 | Kalamazoo Spray Foam Insulation | 56 | 5.0★ (18) | Eastwood, 4 mi away | — | — |
| 8 | Michigan Spray Foam Insulation | 56 | 5.0★ (22) | Kalamazoo, 7 mi away | — | — |
| 9 | Great Lakes Insulation | 56 | 5.0★ (8) | Kalamazoo, 12 mi away | Sat · Sun | — |
| 10 | Leading Edge Insulation Services | 52 | 5.0★ (3) | Kalamazoo, 5 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 trade focus: 4.8★ from 175 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Portage
Ranked #2 because of its Google rating and trade focus: 5.0★ from 30 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Kalamazoo, 7 mi away
Ranked #3 because of its Google rating and trade focus: 5.0★ from 59 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Kalamazoo, 14 mi away
Ranked #4 because of its Google rating and review volume: 5.0★ from 290 Google reviews, the most in Portage.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Kalamazoo, 5 mi away
Ranked #5 because of its Google rating and review volume: 4.9★ from 63 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Portage
Ranked #6 because of its Google rating and trade focus: 3.6★ from 7 Google reviews, listed on Google as “Insulation contractor”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Eastwood, 4 mi away
Ranked #7 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 Kalamazoo, 7 mi away
Ranked #8 because of its Google rating and trade focus: 5.0★ from 22 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Kalamazoo, 12 mi away
Ranked #9 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 Kalamazoo, 5 mi away
Ranked #10 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 Kalamazoo, 6 mi away
Ranked #11 because of its Google rating and review volume: 4.7★ from 66 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Kalamazoo, 8 mi away
Ranked #12 because of its Google rating and review volume: 4.8★ from 45 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Portage
Ranked #13 because of its Google rating and trade focus: 4.0★ from 8 Google reviews, listed on Google as “Mechanical contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Battle Creek, 21 mi away
Ranked #14 because of its Google rating and review volume: 4.9★ from 18 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Battle Creek, 21 mi away
Ranked #15 because of its Google rating and review volume: 3.6★ from 43 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
National price ranges in USD, not adjusted for Portage. 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 15 Portage 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 Portage 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 |