15 insulation contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Reading: Zimmerman's Roofing, CR Score 85/100; 4.9★ from 556 Google reviews; open 24/7.
Most-reviewed: Koala Insulation of Chester County, 231 Google reviews at 4.9★, the most of 15 ranked after Zimmerman's Roofing; ranked #2.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
15 Reading insulation contractors are ranked here by CR Score, from 8 published factors. 1 is open 24/7, 8 open Saturdays and 2 open Sundays, based on posted hours. The median Google rating is 5.0★ across 15 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Zimmerman's Roofing | 85 | 4.9★ (556) | New Holland, 19 mi away | 24/7 | Overall |
| 2 | Koala Insulation of Chester County | 84 | 4.9★ (231) | Chester Springs, 25 mi away | Sat · Sun | Most reviews |
| 3 | Berks Spray Foam Insulation | 82 | 5.0★ (21) | Reading | Sat | — |
| 4 | Keystone Spray Foam of Allentown | 80 | 4.9★ (14) | Allentown, 9 mi away | Sat | — |
| 5 | King Conservation Group | 77 | 5.0★ (140) | Lancaster, 24 mi away | — | — |
| 6 | Interpipe Insulation | 77 | 5.0★ (4) | Pottstown, 15 mi away | — | — |
| 7 | SCO Attic Insulation & Roofing Services Reading, PA | 75 | 5.0★ (4) | Reading | Sat · Evenings | — |
| 8 | Extreme Spray Foam of Philadelphia | 75 | 5.0★ (9) | Philadelphia, 11 mi away | — | — |
| 9 | Inspire Contracting | 74 | 4.8★ (80) | Pottstown, 17 mi away | Sat | — |
| 10 | Lantz Insulation | 72 | 5.0★ (14) | Leola, 22 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: 4.9★ from 556 Google reviews, the most Google reviews on this list (556).
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Chester Springs, 25 mi away
Ranked #2 because of its Google rating and trade focus: 4.9★ from 231 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Reading
Ranked #3 because of its Google rating and trade focus: 5.0★ from 21 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Allentown, 9 mi away
Ranked #4 because of its Google rating and trade focus: 4.9★ from 14 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Lancaster, 24 mi away
Ranked #5 because of its Google rating and trade focus: 5.0★ from 140 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Pottstown, 15 mi away
Ranked #6 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “Insulation contractor”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in Reading
Ranked #7 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “Construction company”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Philadelphia, 11 mi away
Ranked #8 because of its Google rating and trade focus: 5.0★ from 9 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Pottstown, 17 mi away
Ranked #9 because of its Google rating and review volume: 4.8★ from 80 Google reviews, 80 Google reviews.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Leola, 22 mi away
Ranked #10 because of its Google rating and trade focus: 5.0★ from 14 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Coatesville, 23 mi away
Ranked #11 because of its Google rating and review volume: 5.0★ from 51 Google reviews, 51 Google reviews.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Ephrata, 18 mi away
Ranked #12 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “Roofing contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Chester Springs, 22 mi away
Ranked #13 because of its Google rating and trade focus: 4.0★ from 10 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Lancaster, 24 mi away
Ranked #14 because of its Google rating and trade focus: 3.3★ from 3 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Pottstown, 14 mi away
Ranked #15 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “HVAC contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
13 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 |
|---|---|---|
| Ace Resources | 16 mi | |
| Barrier Spray Foam, Llc | 5.0★ (2) | 21 mi |
| Burkholder Home Solutions LLC | 14 mi | |
| Dabmar Co. Inc. | 22 mi | |
| Essig Plumbing & Heating | 4.9★ (3,841) | In Reading |
| Homegrown Handyman LLC | 23 mi | |
| IMC Insulation Materials | 24 mi | |
| Integrity Mechanical Insulation LLC | 5.0★ (1) | 22 mi |
| Jay Rusden Handyman Service | 5.0★ (2) | 25 mi |
| Sunrise Valley Spray Foam Insulation | 5.0★ (2) | 16 mi |
| Williams Spray Foam | 5.0★ (2) | 19 mi |
| Z - DGZ Attic Insulation & Roofing Services Co, PA | 4.5★ (2) | In Reading |
| Z - SRG Attic Insulation & Roofing Services Co, PA | In Reading |
National price ranges in USD, not adjusted for Reading. 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 Reading 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 Reading 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 |