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Insulation Services
Spray Foam Insulation
Attic Insulation
Super Attic System
Blown-In Insulation

Types of Home Insulation

Basement Insulation
Crawl Space Insulation
Garage Insulation
Wall Insulation

Air Sealing Services
Blower Door Test

Additional Services
Ductwork Solutions
Home Energy Audit
Replacement Windows
Replacement Doors
Interior Window Inserts

Before and After Pictures from Alexandria
Knee-Wall Spray Foam-Alexandria, VA

Knee-Wall Spray Foam-Alexandria, VA

Before After
Knee-Wall Spray Foam-Alexandria, VA Knee-Wall Spray Foam-Alexandria, VA

There were severs drafts coming through the knee-walls of this Alexandria, VA home. Comfenergy used closed cell spray foam to air seal and insulate them to stop these drafts. 

Thermax in knee-wall-Alexandria, VA

Thermax in knee-wall-Alexandria, VA

Before After
Thermax in knee-wall-Alexandria, VA Thermax in knee-wall-Alexandria, VA

This Alexandria, VA home had a tremendous amount of air drafting through the knee-wall/storage space.  Comfenergy used Thermax foam boards to air seal and insulate them. Thermax is used in storage areas due to its ability to also provide a fire resistant flame barrier per code.

Basement Spray Foam-Alexandria, VA

Basement Spray Foam-Alexandria, VA

Before After
Basement Spray Foam-Alexandria, VA Basement Spray Foam-Alexandria, VA

Closed cell spray foam was used to insulate the exterior walls of this basement remodeling project in Alexandria, VA.

Company Awards
Loudoun's Favorite Insulation Company 2019
The results are in from Loudoun Now's Annual Favorites Poll. Comfenergy is the winner for Favorite Insulation Company!... [Read more]
Best of Loudoun - 2019
We won the Best Insulation Company in Loudoun County again this year!!... [Read more]
2018 Superior Service Business of the Year
Comfenergy earned the 2018 Superior Service Business of the Year award from the Loudoun County Chamber of Commerce... [Read more]
More Awards

Spray Foam Insulation, Window Replacement & Home Energy Audit Specialist in Alexandria

The salesperson did a great job!  The crew was outstanding.  They were the absolute best!...
Happy Customers Surrounding Alexandria, VA
Work Requests

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Reviews From Alexandria
Testimonials From Alexandria
Excellent job. All the men were helpful and professional.
Testimonial by Lynn S. from Alexandria, VA
Ismael was extremely professional throughout...
Testimonial by Jerome T. from Alexandria, VA
This was also the only company of four that gave an appraisal that provided health and safety information on the product and how ventilation should be...
Testimonial by James S. from Alexandria, VA

Home Insulation Experts Serving Alexandria, VA

Comfenergy is Alexandria's authorized dealer of the nationally renowned Dr. Energy Saver network of the best energy-conservation contractors across the country. We are not just a contractor company, we specialize in helping you understand your home's current energy efficiency, suggest repairs, and we also do the work! You'll receive the maximum energy and cost-saving results with least amount of hassle. Customer satisfaction is our goal, and we take whatever steps necessary to ensure that you are more than happy with our service. At Comfenergy our slogan is "We Fix Uncomfortable Homes!", and we guarantee will do that. If your energy costs are too high, or there are areas of your home that are too cold in the winter or hot in the summer, contact us today!

Expert Spray Foam Insulation Company

At one point pink fiberglass insulation was the best option for home insulation. However, today spray foam insulation is the much better option. Spray foam insulation has several benefits and beats the traditional fiber-glass product in every way. Spray foam insulation is the top choice for homeowners, contractors and building scientists (the experts who study home energy performance) for several reasons. Here are the top reasons spray foam insulation should be your number 1 choice:

Advantages of Spray Foam Insulation:

  • Provides both insulation and air sealing
  • Fills gaps and cracks
  • High R-value
  • Speedy installation
  • Spray foam won't shift, settle, or fall out of place

Help Your Home with Attic Insulation

Upgrading your home’s attic insulation is a very effective & popular energy-saving method because there is usually a lot of room for improvement. Most homeowners believe their attic has enough insulation but once we explain how much insulation is actually needed to make your home efficient people understand that they don’t have anywhere near enough. It is common knowledge that hot air rises which is why a properly insulation attic is one of the most important things you can do for your home. By adding attic insulation to your home you are guaranteeing to save money and also have a more comfortable home. Not having a properly insulated attic is equivalent to constantly leaving one of your windows open. Don’t wait any longer to learn more about the attic insulation methods we have available in your area!.

Attic Insulation Services Available in Alexandria:

  • Blown-in Insulation
  • Blown Fiberglass Insulation
  • Radiant Barrier
  • Rigid Foam Insulation

Crawl Space Insulation Experts

Do you need crawl space insulation installed or replaced? If so, you're in the right place! A damp crawl space with falling or sagging insulation usually means the space has a moisture problem. If that is the case our team of experts can provide a vapor barrier to keep moisture out of your crawl space. We can then replace your existing insulation with a better option such as rigid foam or spray foam insulation. If your crawl space is completely missing insulation then your home is most likely cold and drafty. This is because the environment in your crawl space will transfer to other parts of your home, which is why proper crawl space insulation is essential to keeping your home comfortable and your energy bills low. To learn more about crawl space insulation cost, call or click today!

Complete Insulation Services You Can Trust!

Comfenergy is Northern VA's preferred home insulation and air sealing services company. We have helped many homeowners not only reduce their home energy bills but improve the overall comfort of their homes without patented home insulation solutions.  Did you know that most modern homes do not have adequate insulation? Because of this, your home may feel drafty or uncomfortable throughout the year, mostly in the summer and winter, and this can increase your home energy costs. Proper insulation in your home allows your heating or air conditioning systems to work more efficiently which will save you money. 

We offer a wide variety of home insulation products and services, and each one serves its own unique purpose.  Our most popular form of insulation is spray foam.  Spray foam insulation is extremely versatile and can be used almost anywhere in your home. Spray foam insulation is one of the best ways to lower energy costs, sometimes 30% or more!

Along with spray foam, we use many other different types of insulation as well. Some of our other insulation products include rigid foam, blown-in, cellulose, fiberglass, radiant barrier, and much more.  We understand that insulation is only part of the home energy and comfort equation, so because of this, we can insulate any area of your home.  We insulate spaces such as attics, basements, crawl spaces, walls, floors, garages, and much more.  If your home is uncomfortable or energy bills are too high, contact us today for a FREE home insulation quote!

Home Insulation Services:

Comprehensive Home Energy Audits

Do you think your home is not as energy efficient as it could be? The home energy experts at Comfenergy offer homeowners of Alexandria custom home energy audits.  Before we perform any work in your home, we will take the time to sit with you and discuss what areas of your home are your most problematic, and figure out if you are having common issues.  We till perform our energy audit, and once we have the results, we will go over our findings with your and figure out the next step.  We believe that this approach is the most beneficial for both parties because we can prioritize whatever work needs to be done without wasting your hard earned money.  If you are interested in a comprehensive home energy audit, contact us today!

Get your FREE, no-obligation services estimate in Alexandria, Virginia, you'll also receive a free copy of "Saving Energy and Money at Home," a great book to use as you begin to create a more comfortable, healthy, and energy efficient home!

Case Studies From Alexandria
This Alexandria, VA homeowner had a crawl space with a water infiltration problem during periods of excessive rains.
A roofing company contacted Comfenergy to insulate a flat roof they were replacing. We suggested the use of foam spray insulation to better make an...
This Alexandria, VA customer suffered from a noisy neighbor who kept him awake at night. He needed a way to reduce the noise coming through the...
Work Requests From Alexandria, VA
Vicinity of S. Columbust St in Alexandria
Need to soundproof walls between neighbors. Home is three levels, 1000 sq ft.
Vicinity of Bashford Ln., in Alexandria
I would like to get a quote for adding a soundproof layer to my ceiling to block noise from the unit above.
Vicinity of Riverwood Rd in Alexandria
Will be replacing roof soon. Evaluating whether we should replace/add insulation at the same time.
Vicinity of E Alexandria Avenue in Alexandria
The insulation in our crawl space has receded from the underside of the house. We need that fixed, the crawl space sealed, and a few other issues addressed. We have a list of action items, which I could e-mail to you.
Vicinity of Quisenberry Drive in Alexandria
The upstairs is cold and drafty.
Vicinity of Stokes Ln in Alexandria
Just bought house. Too cold in winter, not sure insulation is adequate.
Vicinity of King James Place in Alexandria
My basement was flooded recently and I need to fix it ASAP . I need water proofing and also repairing my crawl space . I am ready to start
Vicinity of Ridge View Dr in Alexandria
Attic insulation is old and ineffective. I would like to have it evaluated for air sealing and additional blown in insulation.
Vicinity of Ridge Road DR in Alexandria
Rodents are digging under foundation into crawl space through dirt floor -- not sure if there is another solution beside a rat slab. We have had all other possible openings sealed expect dirt floor which has helped some -- we use a pest control company too
Vicinity of Enderby Drive in Alexandria
Original house attic insulation
Vicinity of Waltonway Road in Alexandria
I bought a home in Alexandria earlier this year and then did a renovation and just moved into it. I have a crawl space area in my basement and it is all of the sudden putting off a bad smelling odor. The crawl space is an extension of a closet so that helps shield it some but over the last day or so it has become bad. I've tried to look back there and see if there is something specific causing it but I'm unable to spot anything. Is this something you could come check out? And then make any suggestions on how this might not happen again?
Vicinity of Peele Place in Alexandria
Looking at new roof and raising buildings envelope to roofline via spray foam. No HVAC in attic. Noticeable temperature difference between rooms and floors.
Vicinity of S Patrick St in Alexandria
Crawl space insulation
Vicinity of E Maple St in Alexandria
We have a crawlspace that needs to be insulated and/or encapsulated.
Vicinity of Island Creek Ct in Alexandria
Interested in estimate to have attic cellulose insulation improved, along with new baffles to prevent insulation from covering soffit vents, and the sealing you do of vent pipes, exhaust fans in attic space. Also, Rick mentioned sealing that you do along the top of perimeter walls.
Vicinity of Lynhaven Drive in Alexandria
Water in our basement floor. No obvious cracks or leaks but there is water near our back basement door under our laminate flooring.
Vicinity of Gorgas Pl in Alexandria
I would like someone to check my attic insulation and determine if after 25 years I need to add blown in insulation.
Vicinity of Cottonwood DR in Alexandria
Hello, I'd like to inquire about insulating our attic and side room. Regards, Chris
Vicinity of Euille Street in Alexandria
Attic air duct sweating / dripping. Looking for an estimate for the remediation. Thanks.
Vicinity of Maybrook Pl in Alexandria
I have limited attic insulation and I'm looking to add to the existing insulation.
Serving the following Alexandria, VA zip codes
22301, 22302, 22303, 22304, 22305, 22306, 22307, 22308, 22309, 22310, 22311, 22312, 22313, 22314, 22315, 22320, 22331, 22332, 22333, 22334, 22350

our service area