89/100CR Score
Ranked #1 because of its Google rating and availability: 4.6★ from 2,638 Google reviews, open 24/7.
- 4.6★ from 2,638 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 8656 Dakota Dr, Gaithersburg, MD 20877
Best Insulation Contractors in Herndon, VA (2026)
141 insulation contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Herndon: Senate Termite & Pest Control, CR Score 89/100; 4.6★ from 2,638 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): Michael & Son Services, posts 24/7 hours; ranked #2 of 141.
- 3
Most-reviewed: EcoShield Pest Solutions, 4,576 Google reviews at 4.7★, the most of 141 ranked; ranked #3.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
141 Herndon insulation contractors are ranked here by CR Score, from 8 published factors. 18 are open 24/7, 82 open Saturdays and 40 open Sundays, based on posted hours. The median Google rating is 4.8★ across 141 rated businesses.
Top 10 insulation contractors in Herndon at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Senate Termite & Pest Control | 89 | 4.6★ (2,638) | Gaithersburg, 16 mi away | 24/7 | Overall |
| 2 | Michael & Son Services | 87 | 4.9★ (1,501) | Sterling, 3 mi away | 24/7 | Emergencies |
| 3 | EcoShield Pest Solutions | 87 | 4.7★ (4,576) | Sterling, 3 mi away | Sat | Most reviews |
| 4 | Environmental Pest Control | 84 | 4.8★ (483) | Reston, 2 mi away | Sat | — |
| 5 | Environmental Pest Control | 84 | 4.9★ (2,014) | Germantown, 15 mi away | Sat | — |
| 6 | Founders Insulation | 84 | 4.8★ (99) | Chantilly, 7 mi away | Sat · Sun | — |
| 7 | Crawl Space Brothers | 84 | 4.9★ (33) | Arlington, 16 mi away | 24/7 | — |
| 8 | Comfenergy | 83 | 4.8★ (378) | Sterling, 3 mi away | Sat | — |
| 9 | EDGE Energy | 82 | 4.9★ (87) | Reston, 2 mi away | 24/7 | — |
| 10 | Senate Termite & Pest Control | 82 | 4.6★ (2,022) | Manassas, 13 mi away | 24/7 | — |
The 141 best insulation contractors in Herndon, ranked
Ordered by CR Score, a 0–100 score from 8 published factors. Paid placement never changes the order.
Scores below: based on 6 of 8 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.
Based in Sterling, 3 mi away
87/100CR ScoreRanked #2 because of its Google rating and availability: 4.9★ from 1,501 Google reviews, open 24/7.
- 4.9★ from 1,501 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 45681 Oakbrook Ct STE 101, Sterling, VA 20166
Based in Sterling, 3 mi away
87/100CR ScoreRanked #3 because of its Google rating and review volume: 4.7★ from 4,576 Google reviews, the most Google reviews on this list (4,576).
- 4.7★ from 4,576 Google reviews
- Hours
- Mon–Fri 8 AM–5 PM · Sat 9 AM–1 PM · Sun closed
- Address
- 22560 Glenn Dr Suite 113, Sterling, VA 20164
Based in Reston, 2 mi away
84/100CR ScoreRanked #4 because of its Google rating and trade focus: 4.8★ from 483 Google reviews, listed on Google as “Insulation contractor”.
- 4.8★ from 483 Google reviews
- Hours
- Mon–Fri 8 AM–6 PM · Sat 8 AM–2 PM · Sun closed
- Address
- 11874 Sunrise Valley Dr STE 201, Reston, VA 20191
Based in Germantown, 15 mi away
84/100CR ScoreRanked #5 because of its Google rating and trade focus: 4.9★ from 2,014 Google reviews, listed on Google as “Insulation contractor”.
- 4.9★ from 2,014 Google reviews
- Hours
- Mon–Fri 8 AM–6 PM · Sat 8 AM–2 PM · Sun closed
- Address
- 18815 Sparkling Water Dr Unit N, Germantown, MD 20874
Based in Chantilly, 7 mi away
84/100CR ScoreRanked #6 because of its Google rating and trade focus: 4.8★ from 99 Google reviews, listed on Google as “Insulation contractor”.
- 4.8★ from 99 Google reviews
- Hours
- Mon–Fri 7 AM–5 PM · Sat–Sun 9 AM–5 PM
- Address
- 4447 Brookfield Corporate Dr A, Chantilly, VA 20151
Based in Arlington, 16 mi away
84/100CR ScoreRanked #7 because of its Google rating and availability: 4.9★ from 33 Google reviews, open 24/7.
- 4.9★ from 33 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 4601 Fairfax Dr Suite 1200, Arlington, VA 22203
#8 Comfenergy
Based in Sterling, 3 mi away
83/100CR ScoreRanked #8 because of its Google rating and trade focus: 4.8★ from 378 Google reviews, listed on Google as “Insulation contractor”.
- 4.8★ from 378 Google reviews
- Hours
- Mon–Thu 8 AM–5:30 PM · Fri 8 AM–5 PM · Sat 9 AM–1 PM · Sun closed
- Address
- 45714 Oakbrook Ct #180, Sterling, VA 20166
#9 EDGE Energy
Based in Reston, 2 mi away
82/100CR ScoreRanked #9 because of its Google rating and availability: 4.9★ from 87 Google reviews, open 24/7.
- 4.9★ from 87 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 12020 Sunrise Valley Dr #100, Reston, VA 20191
Based in Manassas, 13 mi away
82/100CR ScoreRanked #10 because of its Google rating and availability: 4.6★ from 2,022 Google reviews, open 24/7.
- 4.6★ from 2,022 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 10413 Balls Ford Rd, Manassas, VA 20109
Based in Bethesda, 16 mi away
82/100CR ScoreRanked #11 because of its Google rating and availability: 4.8★ from 822 Google reviews, open 24/7.
- 4.8★ from 822 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- Third Floor, 4845 Rugby Ave Suite 303, Bethesda, MD 20814
Based in Falls Church, 11 mi away
82/100CR ScoreRanked #12 because of its Google rating and review volume: 4.9★ from 1,580 Google reviews, 1,580 Google reviews.
- 4.9★ from 1,580 Google reviews
- Hours
- Mon–Fri 8 AM–8 PM · Sat–Sun 8 AM–4 PM
- Address
- 2841 Hartland Rd Ste 306, Falls Church, VA 22043
Based in Chillum, 10 mi away
82/100CR ScoreRanked #13 because of its Google rating and trade focus: 4.5★ from 98 Google reviews, listed on Google as “Insulation contractor”.
- 4.5★ from 98 Google reviews
- Hours
- Mon–Fri 7 AM–7 PM · Sat–Sun 8 AM–2 PM
Based in Dale City, 22 mi away
81/100CR ScoreRanked #14 because of its Google rating and availability: 4.9★ from 1,060 Google reviews, open 24/7.
- 4.9★ from 1,060 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 13300 Occoquan Rd, Woodbridge, VA 22191
#15 PestNow
Based in Sterling, 4 mi away
81/100CR ScoreRanked #15 because of its Google rating and trade focus: 4.6★ from 2,654 Google reviews, listed on Google as “Insulation contractor”.
- 4.6★ from 2,654 Google reviews
- Hours
- Mon–Fri 7:30 AM–5 PM · Sat–Sun closed
- Address
- 22395 Powers Ct, Sterling, VA 20166
Based in Dale City, 25 mi away
80/100CR ScoreRanked #16 because of its Google rating and trade focus: 4.9★ from 874 Google reviews, listed on Google as “Insulation contractor”.
- 4.9★ from 874 Google reviews
- Hours
- Mon–Fri 8 AM–6 PM · Sat 8 AM–2 PM · Sun closed
- Address
- 14843 D Farm Creek Dr, Woodbridge, VA 22191
Based in Bethesda, 9 mi away
80/100CR ScoreRanked #17 because of its Google rating and availability: 5.0★ from 14 Google reviews, open 24/7.
- 5.0★ from 14 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Rockville, 15 mi away
80/100CR ScoreRanked #18 because of its Google rating and availability: 4.4★ from 5 Google reviews, open 24/7.
- 4.4★ from 5 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 330 N Stonestreet Ave Suite P, Rockville, MD 20850
Based in Sterling, 3 mi away
80/100CR ScoreRanked #19 because of its Google rating and trade focus: 5.0★ from 22 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 22 Google reviews
- Hours
- Mon–Sat 6 AM–6 PM · Sun closed
- Address
- 45326 Daveno Square, Sterling, VA 20164
Based in Mount Vernon, 20 mi away
80/100CR ScoreRanked #20 because of its Google rating and availability: 5.0★ from 6 Google reviews, open 24/7.
- 5.0★ from 6 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Manassas, 16 mi away
80/100CR ScoreRanked #21 because of its Google rating and review volume: 4.9★ from 975 Google reviews, 975 Google reviews.
- 4.9★ from 975 Google reviews
- Hours
- Mon–Fri 8 AM–6 PM · Sat–Sun 10 AM–4 PM
- Address
- 12200 Livingston Rd #100, Manassas, VA 20109
#22 ElevationBuild
Based in Reston, 3 mi away
79/100CR ScoreRanked #22 because of its Google rating and availability: 4.9★ from 99 Google reviews, open 24/7.
- 4.9★ from 99 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1900 Campus Commons Dr Ste 100, Reston, VA 20191
Based in Falls Church, 12 mi away
79/100CR ScoreRanked #23 because of its Google rating and trade focus: 4.6★ from 147 Google reviews, listed on Google as “Insulation contractor”.
- 4.6★ from 147 Google reviews
- Hours
- Mon–Fri 7:30 AM–6 PM · Sat 8 AM–4 PM · Sun closed
- Address
- 110 Gordons Rd, Falls Church, VA 22046
Based in Manassas, 16 mi away
79/100CR ScoreRanked #24 because of its Google rating and availability: 5.0★ from 62 Google reviews, open 24/7.
- 5.0★ from 62 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 9532 Liberia Ave Unit 110, Manassas, VA 20110
#25 Super Foam Usa
Based in Bethesda, 7 mi away
78/100CR ScoreRanked #25 because of its Google rating and trade focus: 5.0★ from 15 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 15 Google reviews
- Hours
- Mon–Sat 7 AM–8 PM · Sun closed
Insulation contractors ranked #26 to #50
#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 141 ranked insulation contractors here; the rest are on their profiles.
Also serving Herndon
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 |
|---|---|---|
| AJC Consulting | In Herndon | |
| EcoGuard Insulation | 5.0★ (1) | 7 mi |
| Foremost Attic Clean Up Llc | 5.0★ (2) | 15 mi |
| Indepa Painting Services & Chimney Inspection, | 5.0★ (5) | In Herndon |
| Insulation Service Washington DC | 5.0★ (2) | 21 mi |
| Jacob Air Duct Cleaning & Attic Insulation | 5.0★ (2) | 19 mi |
| JCP Painting and Remodeling | In Herndon | |
| L & C Spray Foam Insulators | 5.0★ (2) | 2 mi |
| MCL Construction, LLC | 5.0★ (2) | 20 mi |
| Mr Joaquin Painting, LLC | 4.5★ (2) | 14 mi |
| Ocean Fireproofing | 5.0★ (2) | 21 mi |
| Optimum Spray Foam Insulation | 5.0★ (2) | 23 mi |
| Osman Painting and Remodel | 5.0★ (2) | 19 mi |
| Pro Desk at The Home Depot | 4.5★ (2) | 11 mi |
| Pro Desk at The Home Depot | 5.0★ (2) | 15 mi |
| Pro Desk at The Home Depot | 5.0★ (2) | 22 mi |
| Pro Desk at The Home Depot | 5.0★ (1) | 5 mi |
| Pro Desk at The Home Depot | 5.0★ (1) | 8 mi |
| Smart Home Improvement DMV | 5.0★ (2) | 14 mi |
| Southeastern Insulation Contractors Association | In Herndon |
How much do insulation contractors cost in Herndon?
National price ranges in USD, not adjusted for Herndon. 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 |
How we ranked Herndon insulation contractors
We scored 141 Herndon 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 Herndon 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 |
Insulation contractors in Herndon: frequently asked questions
Who is the best insulation contractor in Herndon?
By CR Score, the highest-ranked insulation contractor in Herndon, VA is Senate Termite & Pest Control with a CR Score of 89/100. It has 4.6★ from 2,638 Google reviews. It is open 24/7. Michael & Son Services (#2) and EcoShield Pest Solutions (#3) follow. We ranked 141 insulation contractors on 8 factors, last updated October 22, 2026.
How many insulation contractors are there in Herndon?
ContractorsRanked ranks 141 insulation contractors serving Herndon, VA. Another 20 within 25 mi are listed but not ranked yet. Counts are as of October 2026.
Which insulation contractors in Herndon are open 24/7?
18 ranked insulation contractors in Herndon post 24/7 hours. The highest-ranked are Senate Termite & Pest Control (#1), Michael & Son Services (#2) and Crawl Space Brothers (#7). Hours come from each business's Google listing as of October 2026, so call to confirm.
Which insulation contractors in Herndon work on weekends?
82 of 141 ranked insulation contractors post Saturday hours and 40 post Sunday hours. The highest-ranked open Saturdays are Senate Termite & Pest Control (#1), Michael & Son Services (#2) and EcoShield Pest Solutions (#3). Posted hours are office hours; crews may book weekend jobs separately.
How much does attic insulation cost in Herndon?
Attic insulation typically costs $1,700 to $2,500, with $2,100 typical (Per attic: typical range of customer-reported jobs (about $1 to $3 per sq ft). US national range). This is a national range, not adjusted for Herndon. Prices were last checked October 2026. Get at least two written quotes before you hire.
What Google rating do Herndon insulation contractors have?
The median Google rating among 141 rated insulation contractors in Herndon is 4.8★, with a median of 23 reviews. EcoShield Pest Solutions has the most, 4,576 reviews, and ranks #3. We adjust ratings for review count, so a few five-star reviews cannot top the list.
How does ContractorsRanked rank insulation contractors?
Each insulation contractor gets a 0–100 CR Score from 8 published factors, led by reputation (35%), credentials (15%), review volume (10%) and recency (10%). Factors we cannot measure are left out, not scored as zero. Only businesses with a confirmed trade and 3 or more reviews, or a claimed profile, are ranked.
Do insulation contractors outside Herndon count in this ranking?
Yes, if they are within 25 mi of the Herndon city center, our service radius for insulation contractors. Each listing shows where the business is based and how far away it is. Proximity is 5% of the CR Score, so a nearby business gets a small edge.
Update log for Herndon
- October 2026: CR Scores recalculated for 141 insulation contractors serving Herndon.
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