66 insulation contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in St. Charles: Home Paramount Pest Control, CR Score 58/100; 4.8★ from 107 Google reviews; open Saturdays until 4 PM.
Best for emergencies (open 24/7): Hyper Roofing LLC, posts 24/7 hours; ranked #3 of 66.
Most-reviewed: Michael & Son Services, 8,326 Google reviews at 4.8★, the most of 66 ranked; ranked #7.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
66 St. Charles insulation contractors are ranked here by CR Score, from ten published factors. 7 are open 24/7, 36 open Saturdays and 13 open Sundays, based on posted hours. The median Google rating is 4.9★ across 66 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Home Paramount Pest Control | 58 | 4.8★ (107) | Waldorf, 2 mi away | Sat | Overall |
| 2 | Environmental Pest Control | 57 | 4.9★ (874) | Dale City, 18 mi away | Sat | — |
| 3 | Hyper Roofing LLC | 56 | 5.0★ (106) | Waldorf, 2 mi away | 24/7 | Emergencies |
| 4 | Home Paramount Pest Control | 55 | 4.8★ (193) | Forestville, 17 mi away | Sat | — |
| 5 | Crawl Space Brothers | 55 | 4.9★ (33) | Arlington, 22 mi away | 24/7 | — |
| 6 | Leonard Splaine Co. | 54 | 4.9★ (1,060) | Dale City, 18 mi away | 24/7 | — |
| 7 | Michael & Son Services | 54 | 4.8★ (8,326) | Hyattsville, 23 mi away | Sat · Sun | Most reviews |
| 8 | Home Paramount Pest Control | 54 | 4.7★ (163) | Dale City, 18 mi away | Sat | — |
| 9 | G & B Insulation: | 54 | 4.1★ (17) | La Plata, 5 mi away | — | — |
| 10 | Senate Termite & Pest Control | 53 | 5.0★ (6) | Mount Vernon, 19 mi away | 24/7 | — |
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Ranked #1 because of its Google rating and trade focus: 4.8★ from 107 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Dale City, 18 mi away
Ranked #2 because of its Google rating and trade focus: 4.9★ from 874 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Waldorf, 2 mi away
Ranked #3 because of its Google rating and review volume: 5.0★ from 106 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Forestville, 17 mi away
Ranked #4 because of its Google rating and trade focus: 4.8★ from 193 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Arlington, 22 mi away
Ranked #5 because of its Google rating and trade focus: 4.9★ from 33 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Dale City, 18 mi away
Ranked #6 because of its Google rating and review volume: 4.9★ from 1,060 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Hyattsville, 23 mi away
Ranked #7 because of its Google rating and review volume: 4.8★ from 8,326 Google reviews, the most in St. Charles.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Dale City, 18 mi away
Ranked #8 because of its Google rating and trade focus: 4.7★ from 163 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in La Plata, 5 mi away
Ranked #9 because of its Google rating and trade focus: 4.1★ from 17 Google reviews, listed on Google as “Insulation contractor”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Mount Vernon, 19 mi away
Ranked #10 because of its Google rating and trade focus: 5.0★ from 6 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Coral Hills, 15 mi away
Ranked #11 because of its Google rating and trade focus: 4.8★ from 39 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in St. Charles
Ranked #12 because of its Google rating and trade focus: 5.0★ from 7 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Arlington, 19 mi away
Ranked #13 because of its Google rating and trade focus: 4.7★ from 221 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Falls Church, 25 mi away
Ranked #14 because of its Google rating and review volume: 4.9★ from 1,580 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Falls Church, 24 mi away
Ranked #15 because of its Google rating and trade focus: 4.6★ from 147 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Washington, D.C., 16 mi away
Ranked #16 because of its Google rating and trade focus: 4.7★ from 15 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Falls Church, 19 mi away
Ranked #17 because of its Google rating and trade focus: 4.6★ from 36 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Falls Church, 22 mi away
Ranked #18 because of its Google rating and trade focus: 5.0★ from 29 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Arbutus, 22 mi away
Ranked #19 because of its Google rating and trade focus: 5.0★ from 23 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Rosaryville, 9 mi away
Ranked #20 because of its Google rating and trade focus: 4.0★ from 4 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Dale City, 21 mi away
Ranked #21 because of its Google rating and trade focus: 4.6★ from 33 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Washington, D.C., 17 mi away
Ranked #22 because of its Google rating and trade focus: 5.0★ from 21 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Alexandria, 16 mi away
Ranked #23 because of its Google rating and availability: 5.0★ from 35 Google reviews, open 24/7.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Alexandria, 16 mi away
Ranked #24 because of its Google rating and trade focus: 4.4★ from 7 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Bethesda, 20 mi away
Ranked #25 because of its Google rating and trade focus: 4.0★ from 4 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 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 66 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 |
|---|---|---|
| Alas Painting | 11 mi | |
| American Roofing and Spray Foam | 20 mi | |
| Attic Insulation DC | 5.0★ (1) | 24 mi |
| Capitol Insulation Services of Maryland | 1.0★ (1) | 23 mi |
| Central Virginia Insulation | 5.0★ (2) | 19 mi |
| DC Spray Foam Insulation | 17 mi | |
| Elite Estate Management LLC | 5.0★ (2) | 1 mi |
| Insulation Service Washington DC | 5.0★ (2) | 20 mi |
| JM INSULATION LLC | 5.0★ (2) | 8 mi |
| JMD Handyman Services LLC | 5.0★ (1) | 23 mi |
| L & M Operations | 19 mi | |
| L.A.INSULATION COMPANY INC. | 3.0★ (1) | 22 mi |
| Mgv spray foam insulation llc | 5.0★ (1) | 20 mi |
| North American Insulation Manufacturers Association, Inc. | 5.0★ (1) | 16 mi |
| Ocean Fireproofing | 5.0★ (2) | 16 mi |
| Rampart Insulation | 16 mi | |
| Robert Koenig & Co | 5.0★ (1) | 11 mi |
| Sabaoth Insulation LLC | 19 mi | |
| Springfield's Spray Foam | 17 mi | |
| Summit Environmental Solutions, Inc. | 2.0★ (2) | 14 mi |
National price ranges in USD, not adjusted for St. Charles. 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 66 St. Charles 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 St. Charles 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 |