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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

The Best Home Insulation & Energy Audit 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
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.
Project Location: Leesburg, VA
We have a finished 4th level loft/living area that is always nearly unlivable in the Summer. We would like to fix that so we can use the space year round. Definitely not an HVAC issue, so Mannix referred us to you.
Project Location: Leesburg, VA
Additional insulation in attic and dense fill insulation added to interior walls for sound dampening
Project Location: Leesburg, VA
I think there is excess condensation on my air ducts throughout the house
Project Location: Leesburg, VA
Recently had our handyman recommend that we install a second attic fan as well as look into redoing the insulation. Saw that you were voted #1 in Loudoun County.
Project Location: Leesburg, VA
Unbalanced heating and cooling probably looking for attic fans too
Project Location: Leesburg, VA
I would like to get an estimate for spray foam for a garage but just the ceiling of the garage. Thanks
Project Location: Leesburg, VA
Request free ductwork inspection to assess energy distribution to end of the line bedroom that is hot in Summer and cold in Winter. Expert duct repair services from Comfenergy Free ductwork inspection to check for different ductwork problems. Free Estimates for all recommended ductwork repairs. Comprehensive duct repairs completed by trained home energy technicians. Free assessment of related comfort and energy factors such as insulation, air leakage and HVAC equipment.
Project Location: Leesburg, VA
You were recommended by Frank at Michael and Sons .need to have estimate on attic insulation.
Project Location: Leesburg, VA
Past few days of hot weather it is evident that there is a lot of heat coming through the attic.
Project Location: Leesburg, VA
Lived in home for 2.5 years. 11-12 year old home. Looking to find the leaks and possible improvements to the home for energy efficiency as I would like to move towards solar here in the future. downstairs AC/HEAT system is designed poorly in my opinion and I have essentially three zones, basement, first floor and second floor. They are all different temperatures throughout the day. I believe I have double pane windows, but want to possible seal for drafts and garage is under major part of masterbed room closet and sitting area which causes cold floors. Possible insulation between garage ceiling and floor.
Project Location: Leesburg, VA
I would like to get an estimate on insulating a barn/workshop
Project Location: Leesburg, VA
I am interested in having my HVAC ductwork replaced or having a section of ductwork damaged by a recent hot water pipe leak replaced in my home's crawlspace (four-foot deep).
Project Location: Leesburg, VA
Attic insulation using radiant barrier and air seal.
Project Location: Leesburg, VA
Lower levels freeze and top is too hot. We cannot determine whether our dampers are actually working. We have a three story townhome.
Project Location: Leesburg, VA
Looking to get an energy audit and make some upgrades.
Project Location: Leesburg, VA
Looking to reinsulate my attic. Havibg trouble keeping the upstairs cooler in the summer. I have attic fans that may not work anymore.
Project Location: Leesburg, VA
To check the attic for more efficiency
Serving the following Leesburg, VA zip codes
20175, 20176, 20177, 20178

our service area

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