75 insulation contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Timonium: Smart Energy Pros, CR Score 83/100; 4.9★ from 246 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 #3 of 75.
Most-reviewed: EcoShield Pest Solutions, 9,707 Google reviews at 4.8★, the most of 75 ranked; ranked #2.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
75 Timonium insulation contractors are ranked here by CR Score, from 8 published factors. 2 are open 24/7, 37 open Saturdays and 21 open Sundays, based on posted hours. The median Google rating is 4.6★ across 75 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Smart Energy Pros | 83 | 4.9★ (246) | Baltimore, 16 mi away | Sat · Sun | Overall |
| 2 | EcoShield Pest Solutions | 82 | 4.8★ (9,707) | Bowie, 23 mi away | Sat | Most reviews |
| 3 | Wallace Roofing siding gutter sign window commercial residential flat metal asphalt shingle drywall insulation repairs | 79 | 4.8★ (19) | Baltimore, 10 mi away | 24/7 | Emergencies |
| 4 | Advanced Spray Foam and Coatings LLC | 79 | 5.0★ (172) | Hampstead, 20 mi away | Sat | — |
| 5 | Koala Insulation | 78 | 5.0★ (288) | Baltimore, 10 mi away | — | — |
| 6 | Prestige Roofing | 77 | 4.9★ (40) | Lutherville, 1 mi away | Sat · Sun | — |
| 7 | Baltimore Roofing & Remodeling | 77 | 4.9★ (71) | Baltimore, 18 mi away | 24/7 | — |
| 8 | AROCON Roofing & Construction | 77 | 4.8★ (1,809) | Westminster, 22 mi away | Sat · Sun · Evenings | — |
| 9 | Frontier Insulation Contractors | 77 | 5.0★ (13) | Baltimore, 10 mi away | Sat · Evenings | — |
| 10 | DeVere Insulation Home Performance | 77 | 4.9★ (786) | Glen Burnie, 19 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: 4.9★ from 246 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Bowie, 23 mi away
Ranked #2 because of its Google rating and review volume: 4.8★ from 9,707 Google reviews, the most Google reviews on this list (9,707).
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Baltimore, 10 mi away
Ranked #3 because of its Google rating and availability: 4.8★ from 19 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Hampstead, 20 mi away
Ranked #4 because of its Google rating and trade focus: 5.0★ from 172 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Baltimore, 10 mi away
Ranked #5 because of its Google rating and trade focus: 5.0★ from 288 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Lutherville, 1 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, 18 mi away
Ranked #7 because of its Google rating and availability: 4.9★ from 71 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Westminster, 22 mi away
Ranked #8 because of its Google rating and review volume: 4.8★ from 1,809 Google reviews, 1,809 Google reviews.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Baltimore, 10 mi away
Ranked #9 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 Glen Burnie, 19 mi away
Ranked #10 because of its Google rating and trade focus: 4.9★ from 786 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Baltimore, 10 mi away
Ranked #11 because of its Google rating and trade focus: 5.0★ from 110 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Timonium
Ranked #12 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 Bel Air North, 16 mi away
Ranked #13 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 Baltimore, 16 mi away
Ranked #14 because of its Google rating and availability: 4.9★ from 104 Google reviews, open 7 days a week.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Hanover, 19 mi away
Ranked #15 because of its Google rating and trade focus: 4.9★ from 365 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Baltimore, 6 mi away
Ranked #16 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 Baltimore, 21 mi away
Ranked #17 because of its Google rating and trade focus: 4.0★ from 37 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Eldersburg, 18 mi away
Ranked #18 because of its Google rating and trade focus: 4.5★ from 65 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Fallston, 13 mi away
Ranked #19 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 Bowie, 23 mi away
Ranked #20 because of its Google rating and trade focus: 4.9★ from 459 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Dundalk, 12 mi away
Ranked #21 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, 14 mi away
Ranked #22 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 Bel Air North, 16 mi away
Ranked #23 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 Owings Mills, 9 mi away
Ranked #24 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 Carney, 8 mi away
Ranked #25 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.
#1 to #25 are shown in full above. Here are #26 to #50, in CR Score order; each links to its profile. We publish the top 50 of 75 ranked insulation contractors here; the rest are on their profiles.
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 |
|---|---|---|
| Adorable Spray Foam Contractor Co | 3.0★ (2) | 10 mi |
| Atlantic Service Corporation | 5.0★ (1) | 6 mi |
| B.S.C. Chimney Repair Services Ltd | 4.3★ (3) | In Timonium |
| Colt Insulation, Inc. | 4.0★ (2) | 15 mi |
| Four Twelve Roofing | 4.9★ (16) | In Timonium |
| G & H Insulation Inc | 5.0★ (1) | 8 mi |
| Hallmark Home Energy LLC | 5.0★ (7) | In Timonium |
| HMI Insulation LLC | 5.0★ (1) | 8 mi |
| Home Pro Masters | 5.0★ (11) | In Timonium |
| Insupro Attic Insulation of Baltimore | 5.0★ (2) | 11 mi |
| Irex Advanced Specialty | 5.0★ (2) | 18 mi |
| Lowe's Home Improvement | 4.0★ (1,202) | In Timonium |
| Mc Ardle & Walsh Inc | 4.9★ (12) | In Timonium |
| Nicer Insulation Services Inc | 5.0★ (1) | 11 mi |
| Old Dominion Insulation, Inc. | 5.0★ (1) | 10 mi |
| Pro Desk at The Home Depot | 4.0★ (2) | 2 mi |
| Pro Desk at The Home Depot | 1.0★ (2) | 21 mi |
| Pro Desk at The Home Depot | 4.0★ (1) | 11 mi |
| Riverview Insulation Inc | 5.0★ (1) | 13 mi |
| Schumacher & Seiler | 4.0★ (39) | In Timonium |
National price ranges in USD, not adjusted for Timonium. 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 75 Timonium 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 Timonium 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 |