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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.

Crawl Space Access-Alexandria, VA

Crawl Space Access-Alexandria, VA

Before After
Crawl Space Access-Alexandria, VA Crawl Space Access-Alexandria, VA

This before/after picture series shows an "Everlast" crawl space access door that we install during a crawl space encapsulation. It's made of polypropylene plastic so its durable and will not rot away. It's installed with weatherstriping and hand tightened wing nuts keep it in place and air tight.  Easy to remove and light weight too. 

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

This was the best crew to work with.  THey had a very dirty job to do and did it so...
Happy Customers Surrounding Alexandria, VA
Testimonials
Reviews
Work Requests

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Reviews From Alexandria
Testimonials From Alexandria
The salesperson did a great job! The crew was outstanding. They were the absolute best!
Testimonial by John R. 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
Excellent job. All the men were helpful and professional.
Testimonial by Lynn 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 Robert Todd Ct in Alexandria
No specific concerns - just a general inspection on my home's insulation and energy efficiency. Would you be able to come out and provide a free estimate? Thank you.
Vicinity of Hollindale Dr in Alexandria
1959 home with multiple additions attic insulation varies between 3 to 6 inches, very drafty, supper hot in the summer cold, cold in the winter
Vicinity of Ingersol Road in Alexandria
Need to get an estimate to insulate an attic
Vicinity of Ambassador Way in Alexandria
I have a couple walls where cold air pours in during winter months. There does not appear to be any insulation at all. I need an estimate to insulate them. Thanks!
Vicinity of Basset St in Alexandria
Add R-value
Vicinity of Bellefonte Ave in Alexandria
Removal and replacement of existing insulation in attic - second floor of the house is hard to keep cool.
Vicinity of Saint Stephens Road in Alexandria
Wanted to do a home energy audit. Recently purchased home and areas of the house are really hard to air condition. Insulation in attic looks very old and insufficient. Crawl Space gets wet and can smell odor.
Vicinity of Bryant Towne Court in Alexandria
I am interested in an estimate to seal my attic, a separate estimate to add Additional insulation to my attic, and an estimate to add an attic fan to my attic.
Vicinity of Tally Ho Lane in Alexandria
Attic insulation / attic fan
Vicinity of Martin Allen Ct in Alexandria
Condensation from Attic vents
Vicinity of Clinton Rd in Alexandria
Losing AC and interested in spraying our attic
Vicinity of Mayfair Lane in Alexandria
Need to improve attic insulation
Vicinity of Alexander Avenue in Alexandria
Townhome attic insulation project
Vicinity of E. Abingdon Dr, in Alexandria
My condo has noise from unit above; walking, tv, kitchen appliances. I need an estimate on soundproofing options.
Vicinity of Bermuda Green Ct in Alexandria
Attic insulation
Vicinity of Little Potters Ln in Alexandria
Home energy audit and Attic seal/insulation
Vicinity of Bren Mar Dr in Alexandria
Need window replacements on old house
Vicinity of Harris Place in Alexandria
Attic insulation
Vicinity of Peachtree Place in Alexandria
Would like to get a quote to encapsulate our attic and seal vents and add spray foam to bring it within the temperature envelope of the rest of the house. Would also like to know what would need to be done in attic to make it count as additional square footage of the house.
Vicinity of Yorktown Drive in Alexandria
Attic space converted into living space is poorly insulated, old cellulose and R11/13 insulation, hot summers, cold winters. The addition to house is poorly insulated, same, cold winters and hot humid summers in this part of home. Kindly request a quote for air leakage and spray foam, thank you.
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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