69 insulation contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Dundalk: Smart Energy Pros, CR Score 85/100; 4.9★ from 246 Google reviews; open 7 days a week.
Best for emergencies (open 24/7): Crawl Space Brothers, posts 24/7 hours; ranked #3 of 69.
Most-reviewed: EcoShield Pest Solutions, 9,707 Google reviews at 4.8★, the most of 69 ranked; ranked #2.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
69 Dundalk insulation contractors are ranked here by CR Score, from 8 published factors. 5 are open 24/7, 33 open Saturdays and 14 open Sundays, based on posted hours. The median Google rating is 4.8★ across 69 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Smart Energy Pros | 85 | 4.9★ (246) | Baltimore, 9 mi away | Sat · Sun | Overall |
| 2 | EcoShield Pest Solutions | 84 | 4.8★ (9,707) | Bowie, 17 mi away | Sat | Most reviews |
| 3 | Crawl Space Brothers | 82 | 4.9★ (30) | Laurel, 21 mi away | 24/7 | Emergencies |
| 4 | C & R Insulation, LLC | 80 | 4.6★ (72) | Arnold, 15 mi away | Sat · Sun | — |
| 5 | Environmental Pest Control | 80 | 4.9★ (600) | Crofton, 20 mi away | Sat | — |
| 6 | Insulation Solutions, Inc. | 79 | 5.0★ (4) | Dundalk | — | — |
| 7 | Fireworks Construction | 79 | 4.4★ (16) | Beltsville, 24 mi away | 24/7 | — |
| 8 | DeVere Insulation Home Performance | 79 | 4.9★ (786) | Glen Burnie, 11 mi away | — | — |
| 9 | Daniel Attic Insulation Co | 79 | 3.7★ (3) | Dundalk | Sat · Sun · Evenings | — |
| 10 | Wallace Roofing siding gutter sign window commercial residential flat metal asphalt shingle drywall insulation repairs | 79 | 4.8★ (19) | Baltimore, 14 mi away | 24/7 | — |
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, 17 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 Laurel, 21 mi away
Ranked #3 because of its Google rating and availability: 4.9★ from 30 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Arnold, 15 mi away
Ranked #4 because of its Google rating and trade focus: 4.6★ from 72 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Crofton, 20 mi away
Ranked #5 because of its Google rating and trade focus: 4.9★ from 600 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Dundalk
Ranked #6 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 Beltsville, 24 mi away
Ranked #7 because of its Google rating and availability: 4.4★ from 16 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Glen Burnie, 11 mi away
Ranked #8 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 Dundalk
Ranked #9 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 Baltimore, 14 mi away
Ranked #10 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 Baltimore, 14 mi away
Ranked #11 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 Baltimore, 5 mi away
Ranked #12 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 Annapolis, 19 mi away
Ranked #13 because of its Google rating and trade focus: 4.9★ from 200 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Bowie, 12 mi away
Ranked #14 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
Ranked #15 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 Baltimore, 13 mi away
Ranked #16 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 Baltimore, 14 mi away
Ranked #17 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 Baltimore, 9 mi away
Ranked #18 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, 13 mi away
Ranked #19 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 Annapolis, 18 mi away
Ranked #20 because of its Google rating and trade focus: 4.6★ from 131 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Ashton-Sandy Spring, 22 mi away
Ranked #21 because of its Google rating and trade focus: 4.8★ from 92 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 #22 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 Baltimore, 16 mi away
Ranked #23 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 Annapolis, 19 mi away
Ranked #24 because of its Google rating and trade focus: 5.0★ from 22 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Baltimore, 9 mi away
Ranked #25 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.
#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 69 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 |
|---|---|---|
| A-L Abatement Inc | 5.0★ (7) | In Dundalk |
| Ackermann Enterprises, Inc | In Dundalk | |
| Adorable Spray Foam Contractor Co | 3.0★ (2) | 6 mi |
| Atlantic Service Corporation | 5.0★ (1) | 20 mi |
| Champion Insulations Co | 4 mi | |
| Chaste Spray Foam Contractor Experts | 5.0★ (1) | 8 mi |
| East Painting Service & Dryer Vent Cleaning Services Dundalk, MD | In Dundalk | |
| G & H Insulation Inc | 5.0★ (1) | 19 mi |
| HMI Insulation LLC | 5.0★ (1) | 8 mi |
| Home Guard Termite, Pest, and Home Services | 5.0★ (1) | 15 mi |
| Insupro Attic Insulation of Baltimore | 5.0★ (2) | 6 mi |
| Insupro Attic Insulation of Columbia | 5.0★ (1) | 19 mi |
| Irex Advanced Specialty | 5.0★ (2) | 13 mi |
| Nicer Insulation Services Inc | 5.0★ (1) | 6 mi |
| Old Dominion Insulation, Inc. | 5.0★ (1) | 9 mi |
| Overjoyed Spray Foam Llc | 5.0★ (1) | 19 mi |
| Rabco Insulation Inc | 5.0★ (2) | 19 mi |
| Riverview Insulation Inc | 5.0★ (1) | In Dundalk |
| Robust Spray Foam Co | 4 mi | |
| USG Walls LLC | In Dundalk |
National price ranges in USD, not adjusted for Dundalk. 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 69 Dundalk 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 Dundalk 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 |