47 insulation contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Griffith: Gasca Spray Foam Insulation & Roofing, CR Score 81/100; 5.0★ from 17 Google reviews.
Best for emergencies (open 24/7): DAP & Son, posts 24/7 hours; ranked #10 of 47.
Most-reviewed: Indiana Spray Foam, 805 Google reviews at 4.9★, the most of 47 ranked; ranked #2.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
47 Griffith insulation contractors are ranked here by CR Score, from 8 published factors. 1 is open 24/7, 20 open Saturdays and 6 open Sundays, based on posted hours. The median Google rating is 4.7★ across 47 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Gasca Spray Foam Insulation & Roofing | 81 | 5.0★ (17) | Steger, 11 mi away | — | Overall |
| 2 | Indiana Spray Foam | 81 | 4.9★ (805) | Lowell, 17 mi away | — | Most reviews |
| 3 | NM Enterprise's Energy Solutions | 81 | 4.9★ (34) | Merrillville, 5 mi away | Sat | — |
| 4 | NM Enterprise's Energy Solutions | 80 | 5.0★ (44) | Dyer, 12 mi away | Sat | — |
| 5 | Dream Work Contracting | 80 | 5.0★ (9) | Hobart, 10 mi away | — | — |
| 6 | Sub-Cooled Heating and Air Conditioning | 80 | 4.9★ (198) | Portage, 12 mi away | Sat · Sun | — |
| 7 | Qute Insulation | 78 | 4.6★ (17) | Lynwood, 6 mi away | Sat | — |
| 8 | Eco-Pro Insulation | 77 | 4.7★ (15) | Downers Grove, 24 mi away | Sat · Sun · Evenings | — |
| 9 | Thornton Insulation Contractors | 77 | 5.0★ (8) | Frankfort, 7 mi away | Sat | — |
| 10 | DAP & Son | 77 | 4.2★ (11) | Chicago, 20 mi away | 24/7 | Emergencies |
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 trade focus: 5.0★ from 17 Google reviews, listed on Google as “Insulation contractor”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in Lowell, 17 mi away
Ranked #2 because of its Google rating and review volume: 4.9★ from 805 Google reviews, the most Google reviews on this list (805).
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Merrillville, 5 mi away
Ranked #3 because of its Google rating and trade focus: 4.9★ from 34 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Dyer, 12 mi away
Ranked #4 because of its Google rating and trade focus: 5.0★ from 44 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Hobart, 10 mi away
Ranked #5 because of its Google rating and trade focus: 5.0★ from 9 Google reviews, listed on Google as “Insulation contractor”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in Portage, 12 mi away
Ranked #6 because of its Google rating and review volume: 4.9★ from 198 Google reviews, 198 Google reviews.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Lynwood, 6 mi away
Ranked #7 because of its Google rating and trade focus: 4.6★ from 17 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Downers Grove, 24 mi away
Ranked #8 because of its Google rating and trade focus: 4.7★ from 15 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Frankfort, 7 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 6 of 8 factors; credentials and recency not yet collected.
Based in Chicago, 20 mi away
Ranked #10 because of its Google rating and trade focus: 4.2★ from 11 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in South Holland, 11 mi away
Ranked #11 because of its Google rating and trade focus: 4.9★ from 71 Google reviews, listed on Google as “Roofing contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in South Holland, 12 mi away
Ranked #12 because of its Google rating and trade focus: 4.7★ from 58 Google reviews, listed on Google as “Roofing contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Oak Lawn, 20 mi away
Ranked #13 because of its Google rating and trade focus: 4.5★ from 46 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Monee, 16 mi away
Ranked #14 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Crestwood, 4 mi away
Ranked #15 because of its Google rating and availability: 5.0★ from 8 Google reviews, open 7 days a week.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Crown Point, 8 mi away
Ranked #16 because of its Google rating and trade focus: 4.4★ from 78 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Bridgeview, 25 mi away
Ranked #17 because of its Google rating and trade focus: 4.2★ from 20 Google reviews, listed on Google as “Insulation contractor”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in Frankfort, 22 mi away
Ranked #18 because of its Google rating and review volume: 4.9★ from 301 Google reviews, 301 Google reviews.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Downers Grove, 25 mi away
Ranked #19 because of its Google rating and trade focus: 4.3★ from 54 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Markham, 16 mi away
Ranked #20 because of its Google rating and trade focus: 4.8★ from 44 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Merrillville, 5 mi away
Ranked #21 because of its Google rating and trade focus: 3.9★ from 9 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Chicago, 22 mi away
Ranked #22 because of its Google rating and trade focus: 4.6★ from 56 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Orland Park, 25 mi away
Ranked #23 because of its Google rating and trade focus: 4.3★ from 7 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Chicago, 15 mi away
Ranked #24 because of its Google rating and trade focus: 4.6★ from 20 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Chicago, 24 mi away
Ranked #25 because of its Google rating and trade focus: 5.0★ from 23 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
National price ranges in USD, not adjusted for Griffith. 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 47 Griffith 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 Griffith 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 |