27 insulation contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in North Bel Air: Mister Insulation, LLC, CR Score 80/100; 5.0★ from 15 Google reviews; open Saturdays until 3 PM.
Most-reviewed: Park Heights Roofing, 529 Google reviews at 4.9★, the most of 27 ranked; ranked #14.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
27 North Bel Air insulation contractors are ranked here by CR Score, from 8 published factors. 11 open Saturdays and 4 open Sundays, based on posted hours. The median Google rating is 4.4★ across 27 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Mister Insulation, LLC | 80 | 5.0★ (15) | Bel Air North, 1 mi away | Sat · Evenings | Overall |
| 2 | Home Paramount Pest Control | 79 | 4.2★ (70) | Fallston, 4 mi away | Sat | — |
| 3 | Mid Atlantic Spray Foam LLC | 79 | 4.2★ (5) | Bel Air North, 1 mi away | — | — |
| 4 | Doyle | 78 | 2.9★ (14) | Bel Air, 1 mi away | Sat · Sun · Evenings | — |
| 5 | New Generation Group, LLC | 76 | 4.9★ (129) | Carney, 12 mi away | Sat | — |
| 6 | Prestige Roofing | 75 | 4.9★ (40) | Lutherville, 16 mi away | Sat · Sun | — |
| 7 | Frontier Insulation Contractors | 74 | 5.0★ (13) | Baltimore, 21 mi away | Sat · Evenings | — |
| 8 | Home Paramount Pest Control | 74 | 3.0★ (46) | Bel Air North, 3 mi away | Sat | — |
| 9 | Summit Insulation and Contracting | 73 | 4.0★ (21) | Dundalk, 19 mi away | Sat | — |
| 10 | Zerodraft Maryland | 73 | 4.6★ (43) | Timonium, 16 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 trade focus: 5.0★ from 15 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Fallston, 4 mi away
Ranked #2 because of its Google rating and trade focus: 4.2★ from 70 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Bel Air North, 1 mi away
Ranked #3 because of its Google rating and trade focus: 4.2★ from 5 Google reviews, listed on Google as “Insulation contractor”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in Bel Air, 1 mi away
Ranked #4 because of its Google rating and trade focus: 2.9★ from 14 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Carney, 12 mi away
Ranked #5 because of its Google rating and review volume: 4.9★ from 129 Google reviews, 129 Google reviews.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Lutherville, 16 mi away
Ranked #6 because of its Google rating and availability: 4.9★ from 40 Google reviews, open 7 days a week.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Baltimore, 21 mi away
Ranked #7 because of its Google rating and trade focus: 5.0★ from 13 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Bel Air North, 3 mi away
Ranked #8 because of its Google rating and trade focus: 3.0★ from 46 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Dundalk, 19 mi away
Ranked #9 because of its Google rating and trade focus: 4.0★ from 21 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Timonium, 16 mi away
Ranked #10 because of its Google rating and trade focus: 4.6★ from 43 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Baltimore, 16 mi away
Ranked #11 because of its Google rating and availability: 5.0★ from 9 Google reviews, open 7 days a week.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Towson, 16 mi away
Ranked #12 because of its Google rating and review volume: 4.9★ from 197 Google reviews, 197 Google reviews.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Owings Mills, 24 mi away
Ranked #13 because of its Google rating and trade focus: 4.7★ from 67 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Pikesville, 23 mi away
Ranked #14 because of its Google rating and review volume: 4.9★ from 529 Google reviews, the most Google reviews on this list (529).
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Edgewood, 20 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 5 of 8 factors; credentials, recency and availability not yet collected.
Based in Dundalk, 19 mi away
Ranked #16 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 Dundalk, 22 mi away
Ranked #17 because of its Google rating and trade focus: 3.7★ from 3 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Edgemere, 22 mi away
Ranked #18 because of its Google rating and trade focus: 4.4★ from 25 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Middle River, 16 mi away
Ranked #19 because of its Google rating and trade focus: 4.6★ from 9 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in White Marsh, 10 mi away
Ranked #20 because of its Google rating and trade focus: 3.3★ from 7 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Baltimore, 14 mi away
Ranked #21 because of its Google rating and review volume: 4.0★ from 103 Google reviews, 103 Google reviews.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Baltimore, 16 mi away
Ranked #22 because of its Google rating and trade focus: 3.8★ from 12 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Baltimore, 15 mi away
Ranked #23 because of its Google rating and trade focus: 4.0★ from 5 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Rosedale, 18 mi away
Ranked #24 because of its Google rating and trade focus: 4.8★ from 4 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Baltimore, 19 mi away
Ranked #25 because of its Google rating and trade focus: 4.3★ from 4 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
#1 to #25 are shown in full above. Here are #26 to #27, in CR Score order; each links to its profile.
| Rank | Business | CR Score | Google rating | Distance |
|---|---|---|---|---|
| 26 | GreenWorks Systems | 67 | 4.7★ (28) | 12 mi |
| 27 | Superior Design | 64 | 3.8★ (129) | 12 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 |
|---|---|---|
| A&A Insulation, LLC | 17 mi | |
| Adorable Spray Foam Contractor Co | 3.0★ (2) | 22 mi |
| Atlantic Service Corporation | 5.0★ (1) | 16 mi |
| Champion Insulations Co | 21 mi | |
| Clear View | 21 mi | |
| Enchanting Attic Clean Up Co | 23 mi | |
| G & H Insulation Inc | 5.0★ (1) | 24 mi |
| GC Construction LLC MHIC License #150915 | 24 mi | |
| HMI Insulation LLC | 5.0★ (1) | 14 mi |
| Insupro Attic Insulation of Baltimore | 5.0★ (2) | 23 mi |
| Nicer Insulation Services Inc | 5.0★ (1) | 23 mi |
| Old Dominion Insulation, Inc. | 5.0★ (1) | 13 mi |
| Polytemp Corporation | 14 mi | |
| Pure Home Insulation | 24 mi | |
| RG Pro Insulation | 17 mi | |
| Riverview Insulation Inc | 5.0★ (1) | 20 mi |
| Robust Spray Foam Co | 21 mi | |
| Trotters Exterior Insulation - Dryvit | 16 mi | |
| USG Walls LLC | 20 mi | |
| Winner Insulation | 21 mi |
National price ranges in USD, not adjusted for North Bel Air. 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 27 North Bel Air 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 North Bel Air 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 |