23 insulation contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Charles Town: Knauf Insulation, CR Score 84/100; 4.2★ from 87 Google reviews; open 24/7.
Best for emergencies (open 24/7): Emergency Water and Mold Removal, posts 24/7 hours; ranked #5 of 23.
Most-reviewed: Atlas Home Energy Solutions, 858 Google reviews at 4.9★, the most of 23 ranked; ranked #4.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
23 Charles Town insulation contractors are ranked here by CR Score, from 8 published factors. 3 are open 24/7, 8 open Saturdays and 4 open Sundays, based on posted hours. The median Google rating is 4.7★ across 23 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Knauf Insulation | 84 | 4.2★ (87) | Martinsburg, 12 mi away | 24/7 | Overall |
| 2 | Koala Insulation of Frederick – Mt. Airy | 83 | 5.0★ (47) | Halfway, 16 mi away | — | — |
| 3 | Home Paramount Pest Control | 81 | 4.8★ (111) | Purcellville, 15 mi away | Sat | — |
| 4 | Atlas Home Energy Solutions | 79 | 4.9★ (858) | Frederick, 25 mi away | — | Most reviews |
| 5 | Emergency Water and Mold Removal | 79 | 5.0★ (25) | Martinsburg, 14 mi away | 24/7 | Emergencies |
| 6 | Petti Pest Control | 78 | 4.7★ (25) | Martinsburg, 14 mi away | 24/7 | — |
| 7 | Four State Insulation Co | 78 | 2.3★ (3) | Charles Town | — | — |
| 8 | Xceptional Wildlife Removal | 77 | 4.1★ (17) | Spring Ridge, 23 mi away | Sat · Sun · Evenings | — |
| 9 | Creative Conservation, Inc. - Winchester | 76 | 4.2★ (5) | Winchester, 16 mi away | — | — |
| 10 | Home Paramount Pest Control | 75 | 4.4★ (72) | Hagerstown, 24 mi away | Sat | — |
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 availability: 4.2★ from 87 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Halfway, 16 mi away
Ranked #2 because of its Google rating and trade focus: 5.0★ from 47 Google reviews, listed on Google as “Insulation contractor”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in Purcellville, 15 mi away
Ranked #3 because of its Google rating and trade focus: 4.8★ from 111 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Frederick, 25 mi away
Ranked #4 because of its Google rating and review volume: 4.9★ from 858 Google reviews, the most Google reviews on this list (858).
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Martinsburg, 14 mi away
Ranked #5 because of its Google rating and availability: 5.0★ from 25 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Martinsburg, 14 mi away
Ranked #6 because of its Google rating and availability: 4.7★ from 25 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Charles Town
Ranked #7 because of its Google rating and trade focus: 2.3★ from 3 Google reviews, listed on Google as “Insulation contractor”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in Spring Ridge, 23 mi away
Ranked #8 because of its Google rating and trade focus: 4.1★ from 17 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Winchester, 16 mi away
Ranked #9 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 Hagerstown, 24 mi away
Ranked #10 because of its Google rating and trade focus: 4.4★ from 72 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Martinsburg, 12 mi away
Ranked #11 because of its Google rating and trade focus: 4.8★ from 25 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Leesburg, 20 mi away
Ranked #12 because of its Google rating and trade focus: 5.0★ from 5 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Winchester, 16 mi away
Ranked #13 because of its Google rating and review volume: 4.6★ from 189 Google reviews, 189 Google reviews.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Hagerstown, 25 mi away
Ranked #14 because of its Google rating and trade focus: 4.9★ from 48 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Frederick, 21 mi away
Ranked #15 because of its Google rating and review volume: 4.9★ from 476 Google reviews, 476 Google reviews.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Frederick, 22 mi away
Ranked #16 because of its Google rating and review volume: 4.8★ from 186 Google reviews, 186 Google reviews.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Winchester, 19 mi away
Ranked #17 because of its Google rating and review volume: 4.8★ from 139 Google reviews, 139 Google reviews.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Winchester, 17 mi away
Ranked #18 because of its Google rating and trade focus: 3.0★ from 23 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Frederick, 25 mi away
Ranked #19 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 Leesburg, 22 mi away
Ranked #20 because of its Google rating and trade focus: 4.7★ from 19 Google reviews, listed on Google as “Plumbing supply store”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Winchester, 19 mi away
Ranked #21 because of its Google rating and trade focus: 4.3★ from 12 Google reviews, listed on Google as “Plumbing supply store”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Hagerstown, 24 mi away
Ranked #22 because of its Google rating and trade focus: 4.8★ from 15 Google reviews, listed on Google as “Insulation materials store”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Hagerstown, 25 mi away
Ranked #23 because of its Google rating and trade focus: 4.5★ from 16 Google reviews, listed on Google as “Plumbing supply store”.
Based on 6 of 8 factors; credentials and recency not yet collected.
11 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 |
|---|---|---|
| Beallair by Wormald | 4.4★ (22) | In Charles Town |
| D & D Painting & Repairs | 20 mi | |
| Dempsey's Painting Company | 22 mi | |
| DMV Painting LLC | 5.0★ (1) | 21 mi |
| Mid Atlantic Spray Foam, LLC | 1.0★ (1) | 21 mi |
| Old Dominion Insulation, Inc. | 22 mi | |
| Optimum Spray Foam Insulation | 5.0★ (2) | 22 mi |
| Presidents Pointe by Stanley Martin Homes | 4.7★ (69) | In Charles Town |
| Pro Desk at The Home Depot | 4.0★ (2) | 24 mi |
| Pro Desk at The Home Depot | 5.0★ (1) | 21 mi |
| Sahara Dry Basement | In Charles Town |
National price ranges in USD, not adjusted for Charles Town. 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 Charles Town 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 Charles Town 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 |