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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
Aspen Air Purifier

Before and After Pictures from Leesburg
Fiberglass versus Spray Foam-Leesburg, VA

Fiberglass versus Spray Foam-Leesburg, VA

Before After
Fiberglass versus Spray Foam-Leesburg, VA Fiberglass versus Spray Foam-Leesburg, VA

This before photo shows a vertical wall in an attic insulated with fiberglass insulation. This fiberglass allows hot/cold air to travel through it and touch the drywall, thus allowing the heat and/or cold to transfer into the living space.

The after picture shows the fiberglass removed and newly insulated using closed cell spray foam.  This builds a great protective thermal and air barrier and makes the top floor of this home cooler in the summer months.

Mold Treatment- Leesburg, VA

Mold Treatment- Leesburg, VA

Before After
Mold Treatment- Leesburg, VA Mold Treatment- Leesburg, VA

This Leesburg, VA homeowner had mold growing in their vented attic assembly that was causing the family to develop allergies and get sick very often.  Comfenergy discovered this attic mold and treated it with MoldX-2 before air sealing, insulating and providing other services.

These pictures ar eof the mold covered roof joists before and after being treated by Comfenergy with MoldX-2.

Home efficiency improvement in Leesburg

Home efficiency improvement in Leesburg

Before After
Home efficiency improvement in Leesburg Home efficiency improvement in Leesburg

These clients were interested in improving the overall efficiency of their home. They had uneven temperatures from room to room and poor airflow through the house. Don Calnen performed a home inspection and identified the need for improved insulation and air sealing in the attic. We removed the old insulation, installed several can light covers and then air sealed with ZypFoam. The knee walls in the attic were fitted with foam boards to seal and insulate before the rest of the attic was filled with TruSoft blown cellulose insulation.

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

Dependable Home Insulation & Air Sealing Contractor Serving Leesburg, VA

This testimonial was given by a condo homeowner from a large condo complex project we have been working on.  The...
Happy Customers Surrounding Leesburg, VA
Testimonials
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Reviews From Leesburg
Testimonials From Leesburg
The crew was respectful of our home and very diligent.
Testimonial by Joanne T. from Leesburg, VA
Carl was great! Took his time to explain everything. The crew explained everything well, worked very hard and very professional.
Testimonial by Philip O. from Leesburg, VA
Outstanding work & communication. I appreciated the opportunity to ask questions at the beginning of each day. Ismael & crew are a great asset to...
Testimonial by Jacob P. from Leesburg, VA

Home Insulation Experts Serving Leesburg, VA

Comfenergy is Leesburg'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

Leesburg’s Trusted Window & Door Replacements

Comfenergy also offers window and door replacements for an even more beautiful and efficient Leesburg 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 Leesburg, 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 Leesburg:

  • 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 Leesburg 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 Leesburg, 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 Leesburg
Staying
Attic insulation in your home can get pretty nasty. Over many years it sits there collecting dirt, dust, pollen, bugs, rodent feces, and more. This...
Home
This Leesburg, VA homeowner was remodeling this old home and flipping it. She ran into a few issues with being able to insulate the dwelling...
Comfort/Energy
This Leesburg, VA homeowner had just moved into this home from a warmer climate. They were interested in generally making this older home more energy...
Press Releases From Leesburg
March 4th, 2016

Barbara Comstock, Republican Member of US Congress from Virginia's 10th District ...
March 4th, 2016 Barbara Comstock, Republican Member of US Congress from Virginia's 10th District visits Comfenergy in Sterling to show interest and learn what she could do to support this growing concern.... [Read more]
Work Requests From Leesburg, VA
Project Location: Leesburg, VA
Would like quote on Moisture seal basement egress. Also - second floor bedrooms get very warm while first floor stays drafty and cold.
Project Location: Leesburg, VA
Soundproof a room from outside noise.
Project Location: Leesburg, VA
Perform comprehensive home energy audit.
Project Location: Leesburg, VA
Hi we would like to get an estimate for better insulating some spaces inside and above a garage and around some hvac duct work. Thanks.
Project Location: Leesburg, VA
Detached metal building with finished space flooded due to frozen pipe. We are currently removing the old insulation and need to replace. 1600 sf plan area with 120' of walls. Also need to insulate metal roof. Would like to schedule a site visit to discuss the details asap.
Project Location: Leesburg, VA
We live in a townhouse and our lowest floor is always very cold. Also, I discovered we are getting mice and snakes in our utility basement section. I discovered this after our water heater broke and I was about to replace the bottom insulation myself. I've had a pest company take a look but they recommend that our insulation be replaced and the whole utility/lower floor get looked at for any holes or gaps that would be allowing mice and cold in. The insulation at the bottom has alot of snake feces and most likely mouse droppings but all the pest company saw was snake feces.
Project Location: Leesburg, VA
Drafty kitchen. Air Leaks coming from behind cabinetry and no insulation around piping
Project Location: Leesburg, VA
Need to insulate one side of basement foundation wall. It is 12 ft high and less than 25ft in length
Project Location: Leesburg, VA
Need to insulate my garage, which has a room above it. Also interested in assessing / improving the attic insulation and sealing air leaks.
Project Location: Leesburg, VA
High energy bill and cold kids rooms
Project Location: Leesburg, VA
Seeking a quote for attic insulation in a single family home
Project Location: Leesburg, VA
Hi. I'm looking for blown insulation for 2 walls in my garage. The walls are already dry walled.
Project Location: Leesburg, VA
I am interested in an energy audit for my home.
Project Location: Leesburg, VA
We just moved in and our converted garage is freezing.
Project Location: Leesburg, VA
Looking to add blow in insulation to the attic in my townhouse. The existing blown in insulation isn't high enough to provide sufficient warmth. I also would like to replace my cardboard rafter vent baffles with rigid plastic/styrofoam
Project Location: Leesburg, VA
What a proposal to check and add insulation in my attic.
Project Location: Leesburg, VA
We have mice in our attic and would like to get it sealed as well as insulation changed.
Project Location: Leesburg, VA
Insulate garage
Project Location: Leesburg, VA
Spray foam attic
Project Location: Leesburg, VA
Looking to cut down on my power bill. Examining solar panels, but also know that it may be time to get better insulation for my home.
Serving the following Leesburg, VA zip codes
20175, 20176, 20177, 20178

our service area

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