42 insulation contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Greendale: Infinity Exteriors, CR Score 87/100; 4.8★ from 2,305 Google reviews; open 24/7.
Best for emergencies (open 24/7): Smart Roofing & Sheet Metal Company, posts 24/7 hours; ranked #2 of 42.
Most-reviewed: Accurate Basement Repair, 834 Google reviews at 4.9★, the most of 42 ranked after Infinity Exteriors; ranked #14.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
42 Greendale insulation contractors are ranked here by CR Score, from 8 published factors. 3 are open 24/7, 15 open Saturdays and 9 open Sundays, based on posted hours. The median Google rating is 4.9★ across 42 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Infinity Exteriors | 87 | 4.8★ (2,305) | New Berlin, 7 mi away | 24/7 | Overall |
| 2 | Smart Roofing & Sheet Metal Company | 85 | 5.0★ (237) | New Berlin, 5 mi away | 24/7 | Emergencies |
| 3 | Larson and Keeney Home Services | 81 | 4.9★ (161) | Pewaukee, 15 mi away | 24/7 | — |
| 4 | Modern Exterior Roofing | 81 | 4.9★ (699) | Waukesha, 13 mi away | Sat · Sun · Evenings | — |
| 5 | Racine Home Insulators, LLC | 80 | 4.7★ (57) | Racine, 20 mi away | Sat · Sun · Evenings | — |
| 6 | USA Insulation of Milwaukee | 79 | 4.3★ (39) | Milwaukee, 15 mi away | Sat · Sun | — |
| 7 | Spraytech Insulators of Milwaukee | 78 | 5.0★ (26) | Milwaukee, 13 mi away | Sat | — |
| 8 | WeatherPro Exteriors | 78 | 4.9★ (544) | West Allis, 7 mi away | Sat | — |
| 9 | ALL ABOUT INSULATION | 78 | 4.9★ (55) | Mount Pleasant, 18 mi away | Sat | — |
| 10 | Nielsen Construction Co | 78 | 4.0★ (3) | Franklin, 4 mi away | — | — |
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 review volume: 4.8★ from 2,305 Google reviews, the most Google reviews on this list (2,305).
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in New Berlin, 5 mi away
Ranked #2 because of its Google rating and availability: 5.0★ from 237 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Pewaukee, 15 mi away
Ranked #3 because of its Google rating and availability: 4.9★ from 161 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Waukesha, 13 mi away
Ranked #4 because of its Google rating and review volume: 4.9★ from 699 Google reviews, 699 Google reviews.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Racine, 20 mi away
Ranked #5 because of its Google rating and trade focus: 4.7★ from 57 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Milwaukee, 15 mi away
Ranked #6 because of its Google rating and trade focus: 4.3★ from 39 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Milwaukee, 13 mi away
Ranked #7 because of its Google rating and trade focus: 5.0★ from 26 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in West Allis, 7 mi away
Ranked #8 because of its Google rating and review volume: 4.9★ from 544 Google reviews, 544 Google reviews.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Mount Pleasant, 18 mi away
Ranked #9 because of its Google rating and trade focus: 4.9★ from 55 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Franklin, 4 mi away
Ranked #10 because of its Google rating and trade focus: 4.0★ from 3 Google reviews, listed on Google as “Insulation contractor”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in Muskego, 8 mi away
Ranked #11 because of its Google rating and availability: 4.9★ from 35 Google reviews, open 7 days a week.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Brookfield, 9 mi away
Ranked #12 because of its Google rating and availability: 4.9★ from 41 Google reviews, open 7 days a week.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Brown Deer, 8 mi away
Ranked #13 because of its Google rating and trade focus: 5.0★ from 6 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Milwaukee, 7 mi away
Ranked #14 because of its Google rating and review volume: 4.9★ from 834 Google reviews, 834 Google reviews.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Burlington, 24 mi away
Ranked #15 because of its Google rating and trade focus: 4.9★ from 223 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Sheboygan, 12 mi away
Ranked #16 because of its Google rating and trade focus: 4.9★ from 102 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Germantown, 21 mi away
Ranked #17 because of its Google rating and trade focus: 4.8★ 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 Milwaukee, 12 mi away
Ranked #18 because of its Google rating and trade focus: 5.0★ from 26 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Milwaukee, 13 mi away
Ranked #19 because of its Google rating and trade focus: 4.8★ from 45 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Whitefish Bay, 13 mi away
Ranked #20 because of its Google rating and trade focus: 3.9★ from 7 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in New Berlin, 6 mi away
Ranked #21 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Hales Corners, 2 mi away
Ranked #22 because of its Google rating and availability: 3.2★ from 9 Google reviews, open 7 days a week.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Milwaukee, 14 mi away
Ranked #23 because of its Google rating and trade focus: 4.6★ from 14 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in New Berlin, 8 mi away
Ranked #24 because of its Google rating and trade focus: 4.4★ from 17 Google reviews, listed on Google as “Contractor”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in Delafield, 20 mi away
Ranked #25 because of its Google rating and review volume: 4.9★ from 511 Google reviews, 511 Google reviews.
Based on 6 of 8 factors; credentials and recency not yet collected.
National price ranges in USD, not adjusted for Greendale. 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 42 Greendale 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 Greendale 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 |