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Capital Insulation, LLC

Batt, Rolled or Reflective Insulation Install or Upgrade, Blown In Insulation Install or Upgrade, Spray Foam Insulation Installation,

About us

We are residential insulation specialists that have been servicing northern Virginia since 2005. We offer many different types of custom insulation work. Our goal is to improve the thermal efficiency of residential homes by providing the highest quality, state of the art insulations available today at competitive prices.

Business highlights

20 years of experience

Services we offer

Attic Air Seal, Batt, Rolled or Reflective Insulation - Remove, Install, or Upgrade, Blown-In Insulation - Remove, Install, or Upgrade, Crawl Space Insulation and Encapsulation, Sprayfoam Insulation

Amenities

Free Estimates

Yes

Accepted Payment Methods

  • CreditCard
Reviews
4.960 Reviews
Number of StarsImage of DistributionNumber of Ratings
5
68%
4
2%
3
0%
2
0%
1
0%

Filter reviews by service

Showing 1-25 of 60 reviews
Ken S.
Oct 2025
5.0
Blown In Insulation Install or Upgrade
Capital Insulation just finished a two-day project at my home, removing old, poor quality attic insulation and replaced it with 21 inches of blown fiber glass insulation. They sealed joints, insulated and sealed around sky lights, recessed lights, put new covers over recessed ceiling lights, etc. Jon, team lead, is awesome, a true professional, and task focused to deliver superior results. The crew worked together well with a positive work attitude which I admired. You can see that they enjoy their work and take pride in what they do. Since most of us home owners don't get up into our attics much, if at all, it is important to find a company you know will do the work you pay for. This is a high-quality company with integrity that will do outstanding work for you and you will no longer need to worry about what is going on in your attic. Karl, the company owner, was also in the attic doing work at my home and pointing out to me things he found and offered solutions for fixing problems

Wayne E.
Sep 2024
5.0
Yes, I recommend this pro
$3,000
When my Dominion Home Energy Report showed that I â used 101% more electricity than average homes,â I knew it was time to do something! I read reviews and then reached out to several companies for an estimate to replace my attic insulation. Capital Insulation provided an itemized quote that was the best value. I was happy every step of the process from working with Karl on the estimate to scheduling the installation with Lisa and communication with the crew while they did the work. The installation was completed quickly, they cleaned up when done, and payment via bank transfer was simple through QuickBooks. I will gladly recommend Capital Insulation to friends and family.

Kevin R.
Feb 2024
5.0
Yes, I recommend this pro
$1,920
Excellent service and competitive pricing. Very professional and I highly recommend this company!

JAIME C.
Jan 2023
5.0
Blown In Insulation Install or Upgrade
Yes, I recommend this pro
This is a great company highly recommended response dive and responsable and honest

Michael B.
May 2021
5.0
Batt, Rolled or Reflective Insulation Install or Upgrade
Yes, I recommend this pro
$5,000
They did an excellent job within the start and end times provided in the estimate. In fact they finished almost 2 hours early.

Anne Q.
Apr 2021
5.0
Blown In Insulation Install or Upgrade
Yes, I recommend this pro
$3,600
Karl and his team did a great job for a very reasonable price. In addition, there was some post-installation repairs that needed to be done, as a result of their work, and the issues were fixed within 2 weeks of the job being completed. That is a sign of a good company that cares about their customers and stands behind their work. We highly recommend this company!

Andy Z.
Oct 2020
5.0
Yes, I recommend this pro
$3,114
I wholeheartedly endorse Capital Insulation to do your next insulation home improvement project. Karl and his team were professional and engaging experts on my home project. He was very responsive to our multi-stage project to remove insulation, build a platform, and install new insulation. Capital Insulation also provided an excellent value for their project. Over the course of the project, the Capital Insulation team communicated what could be done and we talked through how best to achieve my goal for the project. They were flexible in the project and made improvements while it was underway. I was thrilled with how the work of Karl's team was executed. I enthusiastically recommend Capital Insulation.

BARBARA E.
Oct 2020
N/A
Batt, Rolled or Reflective Insulation Install or Upgrade
Yes, I recommend this pro
They were as good as it gets!!!

Andrew D.
Aug 2020
5.0
Batt, Rolled or Reflective Insulation Install or Upgrade
Yes, I recommend this pro
I went with Capital Insulation because he was the least pushy by far. The two other companies bombarded me with voicemails, calls, texts, and emails. He was very friendly, fast, fair-priced, and did a great job as far as I can tell.

Lauren K.
Sep 2019
5.0
Blown In Insulation Install or Upgrade
Yes, I recommend this pro
Karl and his team did a great job. He showed up on time and we are happy with the work he did. Priced better than his competitors and I would highly recommend.

Andy F.
Oct 2018
4.5
Batt, Rolled or Reflective Insulation Install or Upgrade
Yes, I recommend this pro
$1,800
Overall Karl and his team did a great job replacing attic insulation in my 80 year old home. Karl is a seasoned pro and very thorough. Gave us good options for our job and was upfront about certain aspects of the job that were not essential and would just inflate the price. His price point a fraction higher but worth it for piece of mind. Flexible in scheduling. Showed on time and completed a tough, dirty job in under 3 hours. Amazing.

Bob B.
Aug 2018
5.0
Batt, Rolled or Reflective Insulation Install or Upgrade
Yes, I recommend this pro
Great company to deal with. Very professional and prompt. Estimate was informative,timely & friendly! Karl was efficient & worked well with his crew even in August heat. Job well done!

Tony C.
Jun 2018
5.0
Spray Foam Insulation Installation
Yes, I recommend this pro
$11,400
Karl supervised and made sure the work is done properly. Karl provided a detailed estimate and executed a quality job. He worked on my attic and crawl space. I highly recommend him.

Elmar C.
Sep 2017
5.0
Batt, Rolled or Reflective Insulation Install or Upgrade
Yes, I recommend this pro
Karl, the owner, personally came to estimate the job and also when the job was actually being done. He provided very upfront, detailed estimate, explained every option and steps to be taken and did exactly what he promised (actually better, as he found ways to avoid some cuts in the ceiling - saving me money). The whole job was done very professionally, clean and right on time. Would definitely recommend.

Jason S.
Jul 2017
5.0
Batt, Rolled or Reflective Insulation Install or Upgrade
Yes, I recommend this pro
Fantastic service, punctual, and do to quality work. I would hire them again without a second thought.

Courtney H.
Apr 2017
5.0
Blown In Insulation Install or Upgrade
Yes, I recommend this pro
Company did a very professional and thorough job of answering questions on-site and via e-mail.

Robert T.
Mar 2017
5.0
Batt, Rolled or Reflective Insulation Install or Upgrade
Yes, I recommend this pro
$1,278
Capital was fast in responding, took great care in performing quality work and made sure they addressed any requirements of concerns. The owner worked on my project with his crew and ensured things were done right. I was very impressed and highly recommend them to anyone seeking to install insulation.

Bruce M.
Feb 2017
5.0
Blown In Insulation Install or Upgrade
Yes, I recommend this pro
We enjoyed the experience of a first-rate company doing first-rate work.

Julie M.
Dec 2016
5.0
Blown In Insulation Install or Upgrade
Yes, I recommend this pro
$1,986
I had such a good first impression of the company from the very first phone call with their scheduler. The owner Karl came and gave us our estimate and then was here when the work was being completed, from start to finish. They came on a very rainy day and cleaned up behind themselves...all of the employees on site that day were very friendly. Karl answered our questions timely and was a real pleasure to work with. I would recommend Capital Insulation to anyone needing to replace or upgrade their current insulation.

Peter C.
Nov 2016
5.0
Batt, Rolled or Reflective Insulation Install or Upgrade
Yes, I recommend this pro
Did a great job. No issues

Dale J.
Apr 2016
4.5
Blown In Insulation Install or Upgrade
Yes, I recommend this pro
$1,575
They were very professional and customer focused. There were a couple areas that they found during the installation that they insulated without questions or seeking additional payment. They did an outstanding job and provided service beyond the basic contract, very, very rare but much appreciated. I can not say enough about their work. They cleaned up and I didn't find a single speck of insulation or any other items. They treated my home as if they were doing the job for themselves. The estimate was very clear and broke out several additional services. They actually encouraged me to not pay them to do some of the items as they said it was something that I could easily handle. They were correct and with their guidance I saved a couple hundred $$s.

PETER W.
Feb 2016
5.0
Blown In Insulation Install or Upgrade
Yes, I recommend this pro
$2,100
Great customer relations -- work done really professionally. Pointed out and replaced a seized attic fan. Explained why they did what they did. I recommend Capital as a 5+........

Jeff S.
Feb 2016
5.0
Blown In Insulation Install or Upgrade
Yes, I recommend this pro
Great communication, everything done exactly as discussed. Very happy with the work.

Sara G.
Sep 2014
5.0
Batt, Rolled or Reflective Insulation Install or Upgrade
Yes, I recommend this pro
Very knowledgeable, professional and fairly priced. I highly recommend this company.

Mike B.
Sep 2014
5.0
Batt, Rolled or Reflective Insulation Install or Upgrade
Yes, I recommend this pro
$3,000
=very professional,excellent work
Showing 1-25 of 60

Licensing

State Contractor License Requirements

All statements concerning insurance, licenses, and bonds are informational only, and are self-reported. Since insurance, licenses and bonds can expire and can be cancelled, homeowners should always check such information for themselves. To find more licensing information for your state, visit our Find Licensing Requirements page.

*Contact business to see additional licenses.

FAQ

Capital Insulation, LLC is currently rated 4.9 overall out of 5.

Monday: 9:00 AM - 4:00 PM Tuesday: 9:00 AM - 4:00 PM Wednesday: 9:00 AM - 4:00 PM Thursday: 9:00 AM - 4:00 PM Friday: 9:00 AM - 4:00 PM Saturday: Closed Sunday: Closed

Capital Insulation, LLC accepts the following forms of payment: CreditCard

Yes, Capital Insulation, LLC offers free project estimates.

No, Capital Insulation, LLC does not offer eco-friendly accreditations.

No, Capital Insulation, LLC does not offer a senior discount.

No, Capital Insulation, LLC does not offer emergency services.

No, Capital Insulation, LLC does not offer warranties.