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Products & Services

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
Weatherization

Additional Services
Ductwork Solutions
Soundproofing
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
Testimonials
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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! Not only do we offer a variety of home energy services, but we also offer replacement windows and door services to keep the outside out and warmth in, and to boost your curb appeal. You'll receive the maximum energy and cost-saving results with the 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 we 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

Alexandria’s Trusted Window & Door Replacements

Comfenergy also offers window and door replacements for an even more beautiful and efficient Alexandria home. We install Simonton interior window inserts, window replacements, and door replacements with expert precision. Replacement windows and doors will help to maintain more even temperatures and eliminate drafts and energy loss in your home. New windows and doors not only improve the interior and exterior appearance of your home, but they also can lead to significant energy savings. Call to schedule a free estimate today in Alexandria, VA!

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 you 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
Installing
This Alexandria, VA homeowner had a crawl space with a water infiltration problem during periods of excessive rains.
Spray
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...
Reducing
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 Bayliss Drive in Alexandria
Our top floor gets extremely hot in the spring/summer due to poor insulation in attic and crawl spaces. Would like an assessment of how to better regulate temperature in our homes.
Vicinity of Ft Hunt Rd in Alexandria
I am interested in spray foam for an attic space and crawl space.
Vicinity of Heritage Hill Court in Alexandria
Attic insulation seems like it could use some bulk
Vicinity of Sky Blue Ct. in Alexandria
We recently purchased a townhouse and our inspector advised that our attic insulation is rather insufficient, both thin and somewhat unevenly distributed. We would like to add several inches of new thickness to it throughout. There is also one little spot where the insulation meets a soffitt vent a little sloppily and needs to be shored up a bit. We would prefer to have this done in the next few weeks before we move in. Thank you very much.
Vicinity of Burgess Ave. in Alexandria
I have r 9 fiberglass in my attic. I'd like it removed and replaced w the blow in product equal to r49. Remove and discard old debris in attic. End unit town house approx 600 square feet. No upsales please.
Vicinity of Skyhill Rd in Alexandria
I would like to soundproof my apartment ceiling. The neighbors upstairs have wooden floors and I could hear the loud steps.
Vicinity of Woodbine Street in Alexandria
Need a new insulation.
Vicinity of John Roccato Court in Alexandria
We are looking for energy efficiency I.provements to our split-level home. We had an energy audit completed a couple years ago ahead of having our roof replaced and solar installed. Insulation improvements is the one of two big ticket areas we have yet to address (the other being our heat pump once it nears the end if its life expectancy). We are seeking guidance and estimate on attic insulation improvement and ventilation (I suspect our soffit vents arent working as well as they should as the previous owners painted over some of them). We would also be interrsted in ways to improve wall insulation without tearing down the siding or drywall. Wr have a sunroom that is particularly problematic in the winter.
Vicinity of Duke St in Alexandria
Home insulation. Energy audit.
Vicinity of Dale St in Alexandria
Interested in getting better insulation in our crawlspace
Vicinity of Powhatan Street in Alexandria
We had a home inspection and our R rating in the attic and would love to see what options we have as far as attic insulation goes.
Vicinity of West Wyatt Avenue in Alexandria
We have an old duct system under our floors and in our basement. One area in particular under our bedroom makes lots of clanking and pinging noises at night when the heat runs. We are looking for a cost-effective solution to address this issue.
Vicinity of E Mason Ave in Alexandria
Lots of impact noise coming from the neighbors. I live in a 1942 built townhome, but still hear footsteps and some conversations next door like they are right next to me. Hoping to deaden some of that noise.
Vicinity of South Saint Asaph in Alexandria
I have a large crawl space the size of the addition, no insulation and very cold in winter. and would assist Hvac ducts being more efficient.
Vicinity of Wellington Commons Dr in Alexandria
We have uneven heating in our home. Would like to figure out if we have a leak in our duct work or if there's something else going on.
Vicinity of Madison Street in Alexandria
We've been a little concerned about our smart meter reporting extremely high energy use, despite the fact that we've had our heat / HVAC off for the entire month, and we use very little electricity (we do about one load of laundry per week, wash our dishes by hand, don't have much lighting or other appliances, and are careful about turning electric off when not being used. Happy to give more details as needed.
Vicinity of Duke St in Alexandria
Live in old townhome in old town Alexandria, one shared wall of house allows for very audible noises (primarily impact but also ambient down stairs). We would like to sound proof the shared wall and potentially ceiling on first and second floor.
Vicinity of Edsall Road in Alexandria
Looking to reduce the noise coming in to my condo from common areas (hallway and adjacent stairwell). Would like to get a consult on what can be done for our entry area and dining room to lessen the noise.
Vicinity of Castlefin Way in Alexandria
Insulation in attic is low
Vicinity of Mason Hill Drive in Alexandria
Looking to get a quote for attic 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

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