1. Northern Virginia Insulation

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Northern Virginia Insulation

3.9 (20 reviews)
Open • 7:00 am - 7:00 pm

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Services - Northern Virginia Insulation

Window repair services

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Attic Insulation
Michael Amir B.

Totally love Jeff and his professional crew. He speaks to you about what is needed vs what could be up-charged by others. Hence he doesn't assume you are an attic expert, so he breaks things down in a way to best determine the most cost effective path forward. Plus the overall temperature in the house is much better. Thank you !

After, thick insulation
Josh L.

We used Northern Virginia Insulation to increase the insulation in our attic. We had some warm spots in summer on the second floor that I attributed to the poor insulation in our attic. Jeff stated their process would increase the thermal barrier in the attic to ~ R 49. The crew was in and out in a morning and we noticed a more consistent temperature upstairs.

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1 year ago

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3 months ago

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Jeff F.

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2 years ago

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4 years ago

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6 years ago

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4 years ago

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Jeff F.

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5 years ago

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6 years ago

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5 years ago

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Jeff F.

Helpful 3
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6 years ago

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7 years ago

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7 years ago

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11 years ago

Helpful 4
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11 years ago

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11 years ago

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Jeff F.

So sorry! Had a new born baby and was going through a lot at the time!

Helpful 4
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9 years ago

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Jeff F.

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8 years ago

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10 years ago

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11 years ago

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9 years ago

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Review Highlights - Northern Virginia Insulation

“My wife and I looked at 4 other companies and chose Eco because Jeff treated us as if we were his only client.”

Mentioned in 13 reviews

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Founders Insulation - Spray foaming a residential garage with Open Cell Spray foam.

Founders Insulation

(22 reviews)

After getting several quotes, I chose Founders insulation to remove my old fiberglass insulation…read moreand replace it with cellulose. I would give them five stars for their prompt communication setting up the initial appointment, for providing a competitive quote and then answering all my questions about the insulation product they were going to use. I felt my concerns were heard and responded to respectfully, especially by the owner Brian. The crew that did the removal and installation were also punctual, friendly and took good care of my property. Despite working long hours in 100 plus degree conditions. The only reason I dropped a star was because after the dust settled and we were able to access the attic we noted a few things that bothered us. Most of these issues could have been easily addressed if the installation crew had been more communicative with us throughout the process. Instead we had to deal with these issues afterwards which was rather frustrating and took several weeks to resolve and required us to call in other contractors. I would still recommend this company for all the things that they did well. But more and better communication from the work crew would have made this an overall five star experience.

HIGHLY RECOMMENDED! GREAT WORK AND STELLAR CUSTOMER SERVICE!…read moreI had an excellent experience with Founders Insulation and owner Brian Handy. Brian's a great guy--knowledgeable, honest, responsive, and easy to work with. He clearly explained what was needed, what was optional, and why. He showed exactly where the insulation and air-sealing problems were, giving me complete confidence in his recommendations. There was no pressure to add unnecessary work, and everything stayed within budget. Work included removing old attic insulation, extensive air sealing, insulating the attic to R-60, sealing the attic hatch, adding insulation to vaulted ceilings, and spray-foaming problem areas and a cantilever. The team did an incredible job. I was especially impressed with how thoroughly they cleaned up afterward. Most importantly, I've noticed a significant decrease in my heating and A/C costs since the work was completed. Excellent communication, quality work, fair pricing, and no surprises.

Comfenergy

Comfenergy

(32 reviews)

I purchased a 1950's home in Alexandria, VA in 2018; one of the first steps that needed to be…read moreundertaken was air sealing and re-insulating the attic and encapsulating the crawlspace to bring the home to modern comfort and health standards. I went with Comfenergy due to their professionalism and expertise. From the energy audit and consultation (Matt), to the removal and re-installation of attic insulation, crawlspace encapsulation and dehumidifier installation (Dylan & crew), things have performed as expected over a year later. No more humidity, no more overworked HVAC, and no more mud pit under the house. I am writing this review because I had an issue with the dehumidifier that was installed (throwing an error code). I called on a Monday before a holiday and explained the situation. Comfenergy had someone (Ariel) out by Friday to diagnose. He fixed the issue, offered amazing advice, answered all of my questions, and even performed an inspection of their previous work (going as far to spot repair a few places that had weakened due to settling). This kind of customer service, over one year after performing their work, made me feel a whole lot better over such a major investment and project for my home. I believe this is one of those instances where "you get what you pay for," and Comfenergy certainly exceeded my expectations.

The first time they came out we noticed no difference in the comfort of the two rooms we wanted to…read moreaddress, they left the drywall in horrendous shape and the product they put in the recessed lights started to come out littering the floor below. To their credit they came out again but there was again no difference in the rooms and there were gaps left after installing some insulation under an addition. We are now in the process of trying to get someone else to do correctly the work we contracted them to do.

Alpha Pest Management - We go to great lengths to secure your attic from unwanted pests before replacing installation.

Alpha Pest Management

(182 reviews)

I was very happy with the work performed by Justin and Philip. About a week previously, my…read moredaughter noted "a lot of bees" in the attic playroom. The bees were coming in through a hole in the drywall. There were hundreds of bees throughout the room. My first thought was holy s&$! Alpha pest management was recommended by one of my neighbors. Justin called me back on the day when I put in a service request via their website. While I had to wait a bit that day to get a response (this is not a big firm with lots of sales agents and so forth), I spoke with Justin (an exterminator) himself. I didn't have to waste my time speaking to some sales agent. Just asked me to send some pictures of the bees. He immediately told me they were not carpenter bees, which do not sting, but hornets which do! He came the next day to take a look around and recommended taping up the hole in the drywall. This solved the immediate problem of hundreds of bees getting into the attic. Despite Monday being a holiday, he said he was available. He came with his associate, Phillip, who does the drywall repair. Overall, a very professional and positive experience. I am very happy that these @&$!ing hornets are dead.

In April 2026 I asked Justin to remove three squirrels from our attic and fix the hole in the…read moresoffit that squirrels used to get in and out. Five months after the job was done, the soffit patch started deteriorating and fell apart. I contacted Justin to let him know and asked him whether I could count on him to redo the work. I received no response. This company will charge you a high price for anything that is not pest management, and they will have someone else do the work with a very poor quality of materials and craftmanship. Awful customer service and even worse accountability of their work. By the way, Justin's response below is absolutely false. My advice is that you look elsewhere for real professionals that are accountable for their work.

Northern Virginia Insulation - windowsinstallation - Updated November 2026

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