46 insulation contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Downingtown: Koala Insulation of Chester County, CR Score 60/100; 4.9★ from 231 Google reviews; open 7 days a week.
Best for emergencies (open 24/7): Zimmerman's Roofing, posts 24/7 hours; ranked #7 of 46.
Most-reviewed: PJ Fitzpatrick, 12,968 Google reviews at 4.8★, the most of 46 ranked; ranked #4.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
46 Downingtown insulation contractors are ranked here by CR Score, from ten published factors. 5 are open 24/7, 21 open Saturdays and 7 open Sundays, based on posted hours. The median Google rating is 4.8★ across 46 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Koala Insulation of Chester County | 60 | 4.9★ (231) | Chester Springs, 5 mi away | Sat · Sun | Overall |
| 2 | EcoShield Pest Solutions | 58 | 4.8★ (10,503) | Norristown, 18 mi away | — | — |
| 3 | Solstice Home Performance | 56 | 5.0★ (9) | Wilmington, 2 mi away | Sat · Sun | — |
| 4 | PJ Fitzpatrick | 54 | 4.8★ (12,968) | New Castle, 23 mi away | Sat · Sun · Evenings | Most reviews |
| 5 | Green Stone Energy LLC | 54 | 4.9★ (79) | West Chester, 8 mi away | — | — |
| 6 | West Chester Inc | 53 | 4.1★ (17) | West Chester, 7 mi away | — | — |
| 7 | Zimmerman's Roofing | 52 | 4.9★ (556) | New Holland, 22 mi away | 24/7 | Emergencies |
| 8 | AGL Spray Foam | 51 | 4.9★ (60) | Sharon Hill, 24 mi away | Sat · Evenings | — |
| 9 | Driveway Lady | 51 | 5.0★ (10) | Chester Springs, 4 mi away | 24/7 | — |
| 10 | United States Insulation | 51 | 4.0★ (10) | Chester Springs, 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: 4.9★ from 231 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Norristown, 18 mi away
Ranked #2 because of its Google rating and trade focus: 4.8★ from 10,503 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Wilmington, 2 mi away
Ranked #3 because of its Google rating and trade focus: 5.0★ from 9 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in New Castle, 23 mi away
Ranked #4 because of its Google rating and review volume: 4.8★ from 12,968 Google reviews, the most in Downingtown.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in West Chester, 8 mi away
Ranked #5 because of its Google rating and trade focus: 4.9★ from 79 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in West Chester, 7 mi away
Ranked #6 because of its Google rating and trade focus: 4.1★ from 17 Google reviews, listed on Google as “Insulation contractor”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in New Holland, 22 mi away
Ranked #7 because of its Google rating and review volume: 4.9★ from 556 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Sharon Hill, 24 mi away
Ranked #8 because of its Google rating and trade focus: 4.9★ from 60 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Chester Springs, 4 mi away
Ranked #9 because of its Google rating and availability: 5.0★ from 10 Google reviews, open 24/7.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Chester Springs, 5 mi away
Ranked #10 because of its Google rating and trade focus: 4.0★ from 10 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Newark, 25 mi away
Ranked #11 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 New Castle, 23 mi away
Ranked #12 because of its Google rating and review volume: 4.8★ from 3,219 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Coatesville, 8 mi away
Ranked #13 because of its Google rating and trade focus: 4.0★ from 5 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Conshohocken, 21 mi away
Ranked #14 because of its Google rating and trade focus: 4.5★ from 154 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Coatesville, 7 mi away
Ranked #15 because of its Google rating and trade focus: 5.0★ from 51 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Newark, 25 mi away
Ranked #16 because of its Google rating and trade focus: 4.9★ from 62 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Pottstown, 18 mi away
Ranked #17 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “Insulation contractor”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Plymouth Meeting, 22 mi away
Ranked #18 because of its Google rating and trade focus: 4.3★ from 35 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Newark, 22 mi away
Ranked #19 because of its Google rating and trade focus: 4.6★ from 10 Google reviews, listed on Google as “Insulation contractor”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Kennett Square, 11 mi away
Ranked #20 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 Brookhaven, 19 mi away
Ranked #21 because of its Google rating and trade focus: 5.0★ 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 Chester, 21 mi away
Ranked #22 because of its Google rating and review volume: 4.4★ from 3,363 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Wilmington, 16 mi away
Ranked #23 because of its Google rating and trade focus: 2.8★ 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 New Castle, 24 mi away
Ranked #24 because of its Google rating and trade focus: 4.6★ from 9 Google reviews, listed on Google as “Insulation contractor”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in New Castle, 25 mi away
Ranked #25 because of its Google rating and trade focus: 4.3★ from 11 Google reviews, listed on Google as “Insulation contractor”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
#1 to #25 are shown in full above. Here are #26 to #46, in CR Score order; each links to its profile.
20 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 | |
| Caripides Roofing | 4.9★ (227) | In Downingtown |
| Dabmar Co. Inc. | 14 mi | |
| Guller Insulation | 5.0★ (1) | 25 mi |
| Hunter Homeworks LLC | 5.0★ (1) | 25 mi |
| IMC Insulation Mat Corporation | 5.0★ (1) | 25 mi |
| Jay Rusden Handyman Service | 5.0★ (2) | 6 mi |
| Mattioni Plumbing, Heating & Cooling | 4.8★ (3,621) | In Downingtown |
| Next Generation Insulaiton Company, LLC | 5.0★ (1) | 20 mi |
| Paul's Plastering | 3.0★ (2) | 23 mi |
| Phillips | 5.0★ (2) | 20 mi |
| Precision Contracting Services, Inc | 4.6★ (26) | In Downingtown |
| RLSC Chimney Cleaning And Atic Insulation Services In Delaware Ltd. | 5.0★ (2) | 23 mi |
| Simmers and Sons Masonry | 6 mi | |
| Spray Foam Insulation of Philadelphia | 5.0★ (1) | 15 mi |
| Spyglass Solutions LLC | 5.0★ (24) | In Downingtown |
| TeamCraft Roofing | 5.0★ (2) | In Downingtown |
| Valley Grove Construction | 5.0★ (37) | In Downingtown |
| Williams Spray Foam | 5.0★ (2) | 20 mi |
| Z- NGI Attic Insulation & Roofing Services Co, PA 19248 | 3.5★ (2) | 21 mi |
National price ranges in USD, not adjusted for Downingtown. 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 46 Downingtown 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 Downingtown 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 |