26 insulation contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Westminster: AROCON Roofing & Construction, CR Score 60/100; 4.8★ from 1,809 Google reviews; open 7 days a week.
Best for emergencies (open 24/7): Wallace Roofing siding gutter sign window commercial residential flat metal asphalt shingle drywall insulation repairs, posts 24/7 hours; ranked #16 of 26.
Most-reviewed: S&K Roofing, Siding and Windows, 1,092 Google reviews at 4.9★, the most of 26 ranked after AROCON Roofing & Construction; ranked #8.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
26 Westminster insulation contractors are ranked here by CR Score, from ten published factors. 2 are open 24/7, 13 open Saturdays and 6 open Sundays, based on posted hours. The median Google rating is 4.8★ across 26 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | AROCON Roofing & Construction | 60 | 4.8★ (1,809) | Westminster | Sat · Sun · Evenings | Overall |
| 2 | Advanced Spray Foam and Coatings LLC | 60 | 5.0★ (172) | Hampstead, 7 mi away | Sat | — |
| 3 | Environmental Pest Control | 57 | 4.8★ (231) | Mount Airy, 17 mi away | Sat | — |
| 4 | Koala Insulation | 55 | 5.0★ (288) | Baltimore, 22 mi away | — | — |
| 5 | Home Paramount Pest Control | 55 | 4.5★ (65) | Eldersburg, 12 mi away | Sat | — |
| 6 | Bealing Roofing & Exteriors, Inc. | 54 | 4.9★ (433) | Hanover, 14 mi away | Sat · Sun · Evenings | — |
| 7 | Home Paramount Pest Control | 54 | 4.5★ (93) | Hanover, 17 mi away | Sat | — |
| 8 | S&K Roofing, Siding and Windows | 53 | 4.9★ (1,092) | Eldersburg, 10 mi away | — | Most reviews |
| 9 | Winner Insulation | 53 | 5.0★ (110) | Baltimore, 21 mi away | — | — |
| 10 | Ace Handyman Services Central Maryland | 53 | 4.9★ (1,010) | Eldersburg, 12 mi away | Evenings | — |
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Scores below: based on 8 of 10 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.
Ranked #1 because of its Google rating and review volume: 4.8★ from 1,809 Google reviews, the most in Westminster.
Based in Hampstead, 7 mi away
Ranked #2 because of its Google rating and trade focus: 5.0★ from 172 Google reviews, listed on Google as “Insulation contractor”.
Based in Mount Airy, 17 mi away
Ranked #3 because of its Google rating and trade focus: 4.8★ from 231 Google reviews, listed on Google as “Insulation contractor”.
Based in Baltimore, 22 mi away
Ranked #4 because of its Google rating and trade focus: 5.0★ from 288 Google reviews, listed on Google as “Insulation contractor”.
Based in Eldersburg, 12 mi away
Ranked #5 because of its Google rating and trade focus: 4.5★ from 65 Google reviews, listed on Google as “Insulation contractor”.
Based in Hanover, 14 mi away
Ranked #6 because of its Google rating and review volume: 4.9★ from 433 Google reviews.
Based in Hanover, 17 mi away
Ranked #7 because of its Google rating and trade focus: 4.5★ from 93 Google reviews, listed on Google as “Insulation contractor”.
Based in Eldersburg, 10 mi away
Ranked #8 because of its Google rating and review volume: 4.9★ from 1,092 Google reviews.
Based in Baltimore, 21 mi away
Ranked #9 because of its Google rating and trade focus: 5.0★ from 110 Google reviews, listed on Google as “Insulation contractor”.
Based in Eldersburg, 12 mi away
Ranked #10 because of its Google rating and review volume: 4.9★ from 1,010 Google reviews.
Based in Frederick, 22 mi away
Ranked #11 because of its Google rating and trade focus: 4.6★ from 86 Google reviews, listed on Google as “Insulation contractor”.
Based in Owings Mills, 16 mi away
Ranked #12 because of its Google rating and trade focus: 4.7★ from 67 Google reviews, listed on Google as “Insulation contractor”.
Based in Eldersburg, 10 mi away
Ranked #13 because of its Google rating and trade focus: 4.6★ from 24 Google reviews, listed on Google as “Insulation contractor”.
Based in Hampstead, 8 mi away
Ranked #14 because of its Google rating and review volume: 4.5★ from 389 Google reviews.
Based in Frederick, 9 mi away
Ranked #15 because of its Google rating and trade focus: 4.4★ from 16 Google reviews, listed on Google as “Insulation contractor”.
Based in Baltimore, 21 mi away
Ranked #16 because of its Google rating and trade focus: 4.8★ from 19 Google reviews, listed on Google as “Roofing contractor”.
Based in Frederick, 19 mi away
Ranked #17 because of its Google rating and trade focus: 5.0★ from 5 Google reviews, listed on Google as “Insulation contractor”.
Based in Hanover, 19 mi away
Ranked #18 because of its Google rating and review volume: 4.6★ from 59 Google reviews.
Based in Timonium, 22 mi away
Ranked #19 because of its Google rating and trade focus: 4.6★ from 43 Google reviews, listed on Google as “Insulation contractor”.
Based in Ballenger Creek, 24 mi away
Ranked #20 because of its Google rating and trade focus: 5.0★ from 23 Google reviews, listed on Google as “Insulation contractor”.
Based in Pikesville, 20 mi away
Ranked #21 because of its Google rating and review volume: 4.9★ from 529 Google reviews.
Based in Frederick, 15 mi away
Ranked #22 because of its Google rating and review volume: 5.0★ from 87 Google reviews.
Based in Lutherville, 23 mi away
Ranked #23 because of its Google rating and trade focus: 4.9★ from 40 Google reviews, listed on Google as “Roofing contractor”.
Based in Towson, 23 mi away
Ranked #24 because of its Google rating and review volume: 4.9★ from 197 Google reviews.
Based in Gettysburg, 22 mi away
Ranked #25 because of its Google rating and trade focus: 4.9★ from 10 Google reviews, listed on Google as “Roofing contractor”.
#1 to #25 are shown in full above. Here are #26 to #26, in CR Score order; each links to its profile.
| Rank | Business | CR Score | Google rating | Distance |
|---|---|---|---|---|
| 26 | Rocky's Roofing & Siding Inc | 42 | 3.8★ (17) | 19 mi |
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 |
|---|---|---|
| Atlantic Service Corporation | 5.0★ (1) | 19 mi |
| C and R Insulation,llc | 8 mi | |
| Clean Sweep Enterprises, Inc. | 4.9★ (978) | In Westminster |
| Colt Insulation, Inc. | 4.0★ (2) | 8 mi |
| Equity Restoration of Hanover | 17 mi | |
| Excel Insulation | 5.0★ (1) | 14 mi |
| First Quality Drywall and Paint LLC | 4.2★ (5) | In Westminster |
| Frost Fire Insulation Inc. | 5.0★ (2) | 16 mi |
| G & H Insulation Inc | 5.0★ (1) | 15 mi |
| GC Construction LLC MHIC License #150915 | 12 mi | |
| Home Guard Termite, Pest, and Home Services | 5.0★ (1) | 24 mi |
| JBN Corporation - Mechanical Pipe Division | 22 mi | |
| Kelco Insulation Inc | 5.0★ (2) | 20 mi |
| Mid Atlantic Spray Foam LLC | 5.0★ (1) | In Westminster |
| Optimum Spray Foam Insulation | 4.0★ (2) | 22 mi |
| Person & Reed Insulation LLC | 16 mi | |
| Pure Home Insulation | 16 mi | |
| Robey Incorporated | 4.6★ (22) | In Westminster |
| SERVPRO of Carroll County | 4.6★ (159) | In Westminster |
| Winner Insulation | 21 mi |
National price ranges in USD, not adjusted for Westminster. 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 26 Westminster 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 Westminster 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 |