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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.

Closed Cell Spray Foam Walls-Alexandria, Va

Closed Cell Spray Foam Walls-Alexandria, Va

Before After
Closed Cell Spray Foam Walls-Alexandria, Va Closed Cell Spray Foam Walls-Alexandria, Va

The Alexandria, VA homeowner was remodeling their home and chose to use closed cell spray foam in the exterior walls to reduce drafts and energy consumption.

Company Awards
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]
Best Picks 2019
Voted Best Picks for Insulation in 2019... [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
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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:

Basement Waterproofing Services

Is a wet basement driving you crazy, causing damage, or lowering your home's value? Our team of expert waterproofers can help. We offer a wide range of quality waterproofing solutions like:

  • Perimeter drainage systems
  • Doorway drainage systems
  • Sump pumps
  • Waterproof wall and floor products
  • Wall and floor crack repairs
  • Replacement windows
  • Water heater flood protection
  • Frozen discharge line prevention

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
Cold walls and drafty areas were the complaint of this Alexandria, VA homeowner. A full evaluation of the drafty section of the home revealed...
This homeowner had a list of issues they wanted to have solved by Comfenergy. Their floors were cold in the winter, the first floor was drafty, and...
This Alexandria, VA homeowner had high utility bills, and the top floor was hot in the summer, and cold and drafty in the winter. Comfenergy...
Work Requests From Alexandria, VA
Vicinity of W Mason Ave in Alexandria
Insulation in attic.
Vicinity of Nordok St. in Alexandria
We would like to add insulation to the attic space. Approximately 1,500 square feet.
Vicinity of Bluedale St in Alexandria
Need insulation for attic. Remove old replace with new approx 800 sq foot sized attic.
Vicinity of Bouffant Blvd in Alexandria
I have a basement room that gets cold and hot. The baseboards and some walls get cold sometimes. I would like to air seal in the room and the window.
Vicinity of Heather Glen Drive in Alexandria
We had a basement flood in September, the result of a sump pump failure. ServPro came through and ripped out most of our basement and thus we discovered a "custom" and "odd" system that a previous owner installed. We are trying to get a quote as to what it would cost for our insurance company to re-install this unique basement system (something that has puzzled many). You all have been recommended to us. Thank you.
Vicinity of Wellington Rd in Alexandria
Return air ductwork sealed for small gaps. I own a 1500 sq ft single level house with crawlspace and attic. My hvac was checked and it's fine but my filters get dirty immediately and thus must be air vents y crawl space was encapsulated in July.
Vicinity of Fordham Drive in Alexandria
New blown in fiberglass attic insulation for 1556 sqft single story house built in 1952. Completing new HVAC/Gas Furnace installation, want to insulate to finish the job.
Vicinity of Hanson Lane in Alexandria
Interested in attic, crawl space and basement insulation
Vicinity of Portner Road in Alexandria
I have a few crawl/storage/attic spaces that are unfinished and would like an estimate on what my options are in making them sealed.
Vicinity of S Lee St in Alexandria
Need more airflow to the back of the house.
Vicinity of Cooper Street in Alexandria
Do you offer removal and replacement insulation services?
Vicinity of Cyrus Place in Alexandria
Our home is a 1959 split level house. We have a crawl space that is approx. 625 sq. ft that we'd like to get a quote for encapsulation system. Our request for a quote is preventative maintenance and not based on current water issues. Visual inspection of our crawl space does not indicate that there has ever been standing water. However, there is old insulation (falling down in places) and the old vapor barrier has deteriorated, and we know it needs to be cleaned up.
Vicinity of Dahill Place in Alexandria
We are considering crawl space encapsulation
Vicinity of Oak Leaf Dr in Alexandria
House is cold and drafty, mostly coming from the floors - may need to re-insulate crawl space.
Vicinity of Janneys Lane in Alexandria
I have a 180-yr old house. I need new insulation installed in 2 crawl spaces and a semi-unfinished basement.
Vicinity of Dawes Ave in Alexandria
Insulation inspection. Recently bought our home, and some bedrooms are colder than others. Would like to get an opinion on problem and solutions. Thanks.
Vicinity of Donegan CT in Alexandria
I moved in to this home last year. This is 22 year old built home. I see some air leaks in the home during winter.. Please advse.
Vicinity of N. Royal Street in Alexandria
Air ducting in ceiling has significant condensation. Water marks have resulted
Vicinity of Tammy Drive in Alexandria
Our house has almost no insulation. I would like a quote on clearing out the old insulation, sealing the attic, and placing cellulose. I'd also like to discuss the value of dense packing the walls.
Vicinity of Jamieson Ave; in Alexandria
We have an issue with condensation forming on a segment of our air conditioner ductwork and would like to look into getting insulation on the ductwork. Please contact me as soon as possible. Thanks.
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