23 insulation contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Glasgow: PJ Fitzpatrick, CR Score 57/100; 4.8★ from 12,968 Google reviews; open 7 days a week.
Best for emergencies (open 24/7): Newark Co Inc, posts 24/7 hours; ranked #2 of 23.
Most-reviewed: Power Home Remodeling, 3,363 Google reviews at 4.4★, the most of 23 ranked after PJ Fitzpatrick; ranked #14.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
23 Glasgow insulation contractors are ranked here by CR Score, from ten published factors. 4 are open 24/7, 11 open Saturdays and 4 open Sundays, based on posted hours. The median Google rating is 4.8★ across 23 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | PJ Fitzpatrick | 57 | 4.8★ (12,968) | New Castle, 11 mi away | Sat · Sun · Evenings | Overall |
| 2 | Newark Co Inc | 56 | 5.0★ (3) | Newark, 4 mi away | 24/7 | Emergencies |
| 3 | Koala Insulation of Newark | 55 | 4.9★ (62) | Newark, 3 mi away | — | — |
| 4 | Home Paramount Pest Control | 55 | 4.5★ (63) | New Castle, 6 mi away | Sat | — |
| 5 | EcoShield Pest Solutions | 53 | 4.8★ (3,219) | New Castle, 11 mi away | Sat | — |
| 6 | Sealright Injection Foam | 53 | 4.6★ (10) | Newark, 8 mi away | — | — |
| 7 | County Insulation Co | 53 | 4.6★ (9) | New Castle, 8 mi away | — | — |
| 8 | Eastern Industrial Services Inc | 52 | 4.3★ (11) | New Castle, 9 mi away | — | — |
| 9 | Delaware Spray Foam | 52 | 5.0★ (3) | North Star, 5 mi away | Sat | — |
| 10 | High Point Roofing & Remodeling | 52 | 4.9★ (491) | Carneys Point, 24 mi away | 24/7 | — |
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 review volume: 4.8★ from 12,968 Google reviews, the most in Glasgow.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Newark, 4 mi away
Ranked #2 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 Newark, 3 mi away
Ranked #3 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 New Castle, 6 mi away
Ranked #4 because of its Google rating and trade focus: 4.5★ from 63 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in New Castle, 11 mi away
Ranked #5 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 Newark, 8 mi away
Ranked #6 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 New Castle, 8 mi away
Ranked #7 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, 9 mi away
Ranked #8 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.
Based in North Star, 5 mi away
Ranked #9 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 Carneys Point, 24 mi away
Ranked #10 because of its Google rating and review volume: 4.9★ from 491 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in New Castle, 8 mi away
Ranked #11 because of its Google rating and trade focus: 4.4★ from 24 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Newark, 7 mi away
Ranked #12 because of its Google rating and trade focus: 4.3★ from 6 Google reviews, listed on Google as “Contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Elkton, 6 mi away
Ranked #13 because of its Google rating and review volume: 4.8★ from 302 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Chester, 25 mi away
Ranked #14 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 Edgewood, 24 mi away
Ranked #15 because of its Google rating and trade focus: 4.3★ 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 Wilmington, 20 mi away
Ranked #16 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 Newark, 4 mi away
Ranked #17 because of its Google rating and trade focus: 4.8★ from 8 Google reviews, listed on Google as “Contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Kennett Square, 17 mi away
Ranked #18 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 Wilmington, 17 mi away
Ranked #19 because of its Google rating and availability: 5.0★ from 7 Google reviews, open 24/7.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Brookhaven, 25 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 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Chester, 25 mi away
Ranked #21 because of its Google rating and trade focus: 4.2★ from 14 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Wilmington, 12 mi away
Ranked #22 because of its Google rating and trade focus: 5.0★ from 10 Google reviews, listed on Google as “Contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Middletown, 9 mi away
Ranked #23 because of its Google rating and trade focus: 4.7★ from 12 Google reviews, listed on Google as “Roofing contractor”.
Based on 8 of 10 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 |
|---|---|---|
| A & R General Contractor, LLC | 5 mi | |
| Delaware Firestopping, Inc. | 3 mi | |
| IMC Insulation Mat Corporation | 5.0★ (1) | 9 mi |
| Irex Advanced Nuclear | 25 mi | |
| J R Blevins Inc | 22 mi | |
| Old Dominion Insulation, Inc. | 4 mi | |
| Patriot Insulation Contractor LLC | 5.0★ (1) | 8 mi |
| Paul's Plastering | 3.0★ (2) | 13 mi |
| Phillips | 5.0★ (2) | 12 mi |
| RLSC Chimney Cleaning And Atic Insulation Services In Delaware Ltd. | 5.0★ (2) | 12 mi |
| S | 14 mi | |
| Thermal Seal Experts | 12 mi | |
| VIP Drywall & Painting | 4.7★ (65) | In Glasgow |
National price ranges in USD, not adjusted for Glasgow. 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 23 Glasgow 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 Glasgow 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 |