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ContractorsRanked

Best Insulation Contractors in Fairfax, VA (2026)

147 insulation contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →

The short answer

  1. 1

    Best overall in Fairfax: Senate Termite & Pest Control, CR Score 86/100; 4.6★ from 2,638 Google reviews; open 24/7.

  2. 2

    Best for emergencies (open 24/7): Crawl Space Brothers, posts 24/7 hours; ranked #2 of 147.

  3. 25

    Most-reviewed: Michael & Son Services, 8,326 Google reviews at 4.8★, the most of 147 ranked; ranked #25.

Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank

147 Fairfax insulation contractors are ranked here by CR Score, from 8 published factors. 18 are open 24/7, 86 open Saturdays and 42 open Sundays, based on posted hours. The median Google rating is 4.8★ across 147 rated businesses.

Top 10 insulation contractors in Fairfax at a glance

Top 10 insulation contractors in Fairfax at a glance
RankBusinessCR ScoreGoogle ratingBased inHoursBest for
1Senate Termite & Pest Control864.6★ (2,638)Gaithersburg, 21 mi away24/7Overall
2Crawl Space Brothers854.9★ (33)Arlington, 10 mi away24/7Emergencies
3Michael & Son Services844.9★ (1,501)Sterling, 13 mi away24/7—
4Founders Insulation834.8★ (99)Chantilly, 8 mi awaySat · Sun—
5Leonard Splaine Co.834.9★ (1,060)Dale City, 13 mi away24/7—
6EcoShield Pest Solutions834.7★ (4,576)Sterling, 12 mi awaySat—
7Ameritech Construction Corporation834.9★ (1,580)Falls Church, 5 mi awaySat · Sun · Evenings—
8Environmental Pest Control824.8★ (483)Reston, 7 mi awaySat—
9Senate Termite & Pest Control825.0★ (6)Mount Vernon, 10 mi away24/7—
10Environmental Pest Control824.9★ (874)Dale City, 15 mi awaySat—

The 147 best insulation contractors in Fairfax, 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.

  4. #4 Founders Insulation

    Based in Chantilly, 8 mi away

    83/100CR Score

    Ranked #4 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
    View profile for Founders Insulation(703) 213-7591

  6. #6 EcoShield Pest Solutions

    Based in Sterling, 12 mi away

    83/100CR Score

    Ranked #6 because of its Google rating and trade focus: 4.7★ from 4,576 Google reviews, listed on Google as “Insulation contractor”.

    • 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
    View profile for EcoShield Pest Solutions(202) 558-5388

  14. #14 Environmental Pest Control

    Based in Germantown, 22 mi away

    82/100CR Score

    Ranked #14 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
    View profile for Environmental Pest Control(540) 441-7397

  15. #15 Green Pest Services

    Based in Bethesda, 15 mi away

    81/100CR Score

    Ranked #15 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
    View profile for Green Pest Services(703) 961-8484

  16. #16 EDGE Energy

    Based in Reston, 8 mi away

    80/100CR Score

    Ranked #16 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
    View profile for EDGE Energy(571) 462-2218

  18. #18 Comfenergy

    Based in Sterling, 13 mi away

    80/100CR Score

    Ranked #18 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
    View profile for Comfenergy(571) 659-6059

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 147 ranked insulation contractors here; the rest are on their profiles.

insulation contractors in Fairfax, ranks 26 to 50
RankBusinessCR ScoreGoogle ratingDistance
26Home Paramount Pest Control794.7★ (163)13 mi
27Performance Insulation795.0★ (29)8 mi
28Virginia Diamond Roofing785.0★ (35)11 mi
29Super Foam Usa785.0★ (15)4 mi
30The Fifth Fuel784.9★ (305)10 mi
31Crawl Space Brothers784.8★ (89)15 mi
32PestNow784.6★ (2,654)13 mi
33Hyper Roofing785.0★ (35)13 mi
34ElevationBuild784.9★ (99)7 mi
35DMV Foam774.6★ (36)10 mi
36Champion Insulation Inc775.0★ (22)13 mi
37Home Paramount Pest Control774.8★ (193)23 mi
38EDGE Energy774.8★ (56)16 mi
39METRO SHIELD EXTERIORS775.0★ (11)9 mi
40Home Paramount Pest Control764.2★ (58)8 mi
41Ace Handyman Services NoVa764.7★ (286)In Fairfax
42AB Insulation Foam & Attic764.0★ (4)16 mi
43Prudent Homes Insulation764.6★ (33)13 mi
44The King Insulator765.0★ (9)5 mi
45Ratpack Pest Control765.0★ (40)6 mi
46Attic Insulation DC Pro765.0★ (3)3 mi
47FT Insulation LLC755.0★ (6)5 mi
48Home & Foam Insulation Inc755.0★ (3)5 mi
49Virginia Spray Foam Insulation755.0★ (17)2 mi
50NOVA Insulation and Exteriors755.0★ (4)6 mi

Also serving Fairfax

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.

Unranked insulation contractors serving Fairfax
BusinessGoogle ratingDistance
A & R Door Solutions5.0★ (4)In Fairfax
Alpha Masonry & Chimney Repair Services5.0★ (1)In Fairfax
Construction Systems of Virginia Inc.5.0★ (20)In Fairfax
Geothermal Options LLCIn Fairfax
Home Performance Solutions - Home Energy AuditsIn Fairfax
Home Service Doctors4.8★ (2,036)In Fairfax
Insulation Service Washington DC5.0★ (2)16 mi
L & C Spray Foam Insulators5.0★ (2)8 mi
Mr Joaquin Painting, LLC4.5★ (2)10 mi
Nova Basement Finishing4.7★ (15)In Fairfax
Ocean Fireproofing5.0★ (2)14 mi
Pro Desk at The Home Depot4.5★ (2)In Fairfax
Pro Desk at The Home DepotIn Fairfax
Pro Desk at The Home Depot5.0★ (2)13 mi
Quest 1 ConstructionIn Fairfax
Signature Home Studio5.0★ (3)In Fairfax
Smart Home Improvement DMV5.0★ (2)8 mi
The Home Depot4.1★ (1,660)In Fairfax
The Vent Guys5.0★ (1,759)In Fairfax
Ultimate Water Damage Restoration, LLC5.0★ (119)In Fairfax

How much do insulation contractors cost in Fairfax?

National price ranges in USD, not adjusted for Fairfax. Each row names its basis and the month we checked it.

How much do insulation contractors cost in Fairfax?
JobLowTypicalHighBasisChecked
Attic insulation$1,700$2,100$2,500Per attic: typical range of customer-reported jobs (about $1 to $3 per sq ft). US national rangeOctober 2026

How we ranked Fairfax insulation contractors

We scored 147 Fairfax 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.

Read the full method: formula, sources and exclusions

CR Score factors and weights
FactorWeightComputed fromIn Fairfax data
Reputation35%Bayesian-adjusted Google star ratingMeasured
Credentials15%Active state license 0.6, bond 0.2, workers’ comp 0.2Not yet collected
Review volume10%log10(reviews + 1) against the list maximumMeasured
Recency10%Share of reviews from the last 12 monthsNot yet collected
Availability10%Weekly open hours, Saturday, Sunday, 24/7 or same-dayMeasured
Trade focus10%Google main category 1.0, business name 0.7, additional category 0.5Measured
Proximity5%1.0 when based in the city, falling to 0 at the trade’s radiusMeasured
Completeness5%Website, photos, description, hours, claimed profile (0.2 each)Measured

Insulation contractors in Fairfax: frequently asked questions

Who is the best insulation contractor in Fairfax?

By CR Score, the highest-ranked insulation contractor in Fairfax, VA is Senate Termite & Pest Control with a CR Score of 86/100. It has 4.6★ from 2,638 Google reviews. It is open 24/7. Crawl Space Brothers (#2) and Michael & Son Services (#3) follow. We ranked 147 insulation contractors on 8 factors, last updated October 22, 2026.

How many insulation contractors are there in Fairfax?

ContractorsRanked ranks 147 insulation contractors serving Fairfax, VA. 3 of them are based in Fairfax; the rest serve it from nearby towns. Another 20 within 25 mi are listed but not ranked yet. Counts are as of October 2026.

Which insulation contractors in Fairfax are open 24/7?

18 ranked insulation contractors in Fairfax post 24/7 hours. The highest-ranked are Senate Termite & Pest Control (#1), Crawl Space Brothers (#2) and Michael & Son Services (#3). Hours come from each business's Google listing as of October 2026, so call to confirm.

Which insulation contractors in Fairfax work on weekends?

86 of 147 ranked insulation contractors post Saturday hours and 42 post Sunday hours. The highest-ranked open Saturdays are Senate Termite & Pest Control (#1), Crawl Space Brothers (#2) and Michael & Son Services (#3). Posted hours are office hours; crews may book weekend jobs separately.

How much does attic insulation cost in Fairfax?

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 Fairfax. Prices were last checked October 2026. Get at least two written quotes before you hire.

What Google rating do Fairfax insulation contractors have?

The median Google rating among 147 rated insulation contractors in Fairfax is 4.8★, with a median of 24 reviews. Michael & Son Services has the most, 8,326 reviews, and ranks #25. 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 Fairfax count in this ranking?

Yes, if they are within 25 mi of the Fairfax 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 Fairfax

  1. October 2026: CR Scores recalculated for 147 insulation contractors serving Fairfax.
  2. October 2026: 1 duplicate listing merged.

More insulation contractors and Fairfax pages

Other trades in Fairfax