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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
Aspen Air Purifier

Before and After Pictures from Alexandria
Alexandria VA Attic HVAC Duct Spray Foam

Alexandria VA Attic HVAC Duct Spray Foam

Before After
Alexandria VA Attic HVAC Duct Spray Foam Alexandria VA Attic HVAC Duct Spray Foam

This Alexandria VA home had HVAC Ducts running through the attic which had been wrap insulated but were not effectively delivering conditioned air to the rooms below.  The wrap insulation had tears and gaps where attic temperatures were able to impact the conditioned air from the HVAC system and allowed that conditioned air to escape.  In addition to better insulating the rest of the attic space, our Home performance Sales Pro Carl recommended that the HVAC ducts be encapsulated with spray foam to properly seal up and protect them for better delivery of the conditioned air inside.  

Alexandria VA Knee Wall/Storage Space Insulated with Foamax Panels

Alexandria VA Knee Wall/Storage Space Insulated with Foamax Panels

Before After
Alexandria VA Knee Wall/Storage Space Insulated with Foamax Panels Alexandria VA Knee Wall/Storage Space Insulated with Foamax Panels

Homes have many different designs.  Often, town homes are designed in a creative way to allow for maximum use of all possible space.  Knee walls in a top floor can be used for closets, storage areas or cut outs to give just a few more square feet of space.  Properly insulating a knee wall can be the difference between enjoying that extra space or not wanting to be in the area because it is uncomfortable.  Here we used Foamax insulation panels to provide insulation but keep as much useful space as possible for the homeowner.  

Alexandria VA Apartment Duct Spray Foam

Alexandria VA Apartment Duct Spray Foam

Before After
Alexandria VA Apartment Duct Spray Foam Alexandria VA Apartment Duct Spray Foam

This Alexandria VA apartment had HVAC ducts that ran adjacent to the windows and sliding doors that lead to the outside patio/deck area of the living space.  This left the HVAC ducts susceptible to impact from the external temperatures which caused the HVAC to run more often than it should have needed too. This also lead to added noise for the residents when the HVAC system was running.  Our Home Performance Sales Pro Pedro visited the home and found a solution to help protect the HVAC ducts from external temperatures and to reduce the noise coming from the HVAC system.  Pedro advised that the HVAC ducts be encapsulated in spray foam insulation.  Our production team removed the drywall around the HVAC ducts to gain access to each side and then applied spray foam to cover the ducts.  Once dried, the spray foam was shaved down to make it flat around the HVAC ducts and allow to reinstall the drywall that had been cut away.  

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

John and Robert were great! ...
Happy Customers Surrounding Alexandria, VA
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Reviews From Alexandria
Testimonials From Alexandria
This homeowner in Alexandria VA had high energy bills and humidity issues throughout their home. They called...
Testimonial by B C. from Alexandria, VA
The salesperson did a great job! The crew was outstanding. They were the absolute best!
Testimonial by John R. from Alexandria, VA
We couldn't be more happy with the service!
Testimonial by Marie D. 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
Our specialty is air sealing and insulation to help make homes more comfortable. We often find additional needs in a home that can help with the...
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...
Work Requests From Alexandria, VA
Project Location: Alexandria, VA
Insulation in part of attic I can access has fallen down. Third floor is impossibly hot in the summer.
Project Location: Alexandria, VA
We are looking for a company to finish insulating the attic so that we can store boxes up there.
Project Location: Alexandria, VA
After remediation for leaks, during water testing, while we had no leaks, the tester noticed some "cold spots" in the ceiling and recommended we have someone check the wrapping on the HVAC ductwork. We need to have the ceiling opened up (drywall) in a few places and the ductwork inspected.
Project Location: Alexandria, VA
Looking to iincrease insulation on my attic.
Project Location: Alexandria, VA
We are looking to soundproof a shared wall in a condo and possibly a ceiling
Project Location: Alexandria, VA
I'm in a new building that has a surprising amount of impact noise from the condo above. I'd like to understand what the options are and rough approximate costs to address it.
Project Location: Alexandria, VA
Interested in crawl space insulation in our 1918 home. I found your company through Dominion Energy and would like to get the home assessment and a quote please.
Project Location: Alexandria, VA
Interested in insulating shared wall with neighbor. Also curious about windows and soundproof options there
Project Location: Alexandria, VA
Looking to get better insulation in certain parts of the house as well as find out if there are any places that need better sealing.
Project Location: Alexandria, VA
Hvac leaking and attic insulation
Project Location: Alexandria, VA
Upgrade existing attic insulation
Project Location: Alexandria, VA
1940's house with 2000 addition. Very drafty fireplace, originally wood burning converted to gas but breeze can be felt. Most windows replaced but still have some original archway artisan windows that need help. Many doors need insulation help. We fall we above gas companies average even keeping house below 70 degrees in winter. Please help!!!
Project Location: Alexandria, VA
Spray foam the joist in unfinished basement
Project Location: Alexandria, VA
We have aging insulation in our attic and would like to have it all redone. House is approximately 1400sf. We are open to the type of insulation and may want the old insulation removed.
Project Location: Alexandria, VA
Attic insulation
Project Location: Alexandria, VA
I'm looking for price for old insulation removal and put a new one
Project Location: Alexandria, VA
Merry Christmas! I am in need of sound proofing my two story condo - very loud noise coming in from condo below. Ready to replace sub flooring and add noise insulation. Would appreciate a consultation on your products and process (eg do you also offer installation?). Many thanks
Project Location: Alexandria, VA
1960's build and not sure the insulation has ever been replaced. Just looking for budget numbers for next year, 2024.
Project Location: Alexandria, VA
Energy audit, air sealing and insulating attic.
Project Location: Alexandria, VA
Insulation in my crawlspace has fallen and looks like it needs replacement/repair
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