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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

Additional Services
Ductwork Solutions
Home Energy Audit
Replacement Windows
Replacement Doors
Interior Window Inserts

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.

Skylight Insulation in Leesburg, VA

Skylight Insulation in Leesburg, VA

Before After
Skylight Insulation in Leesburg, VA Skylight Insulation in Leesburg, VA

Skylights are beautiful, but can increase heat loss/gain tremendously, just like in this Leesburg, VA home. Especially if they are not properly air sealed and insulated on the back side of them in the attic above.

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

Home Insulation & Energy Audit Contractor Serving Leesburg

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
Work Requests

Click the icons to see what our customers had to say.

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! 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 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:

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 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 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 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
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...
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...
This Leesburg, VA homeowner was tired of having cold floors on half of the house and cold, drafty kitchen cabinets. Comfenergy performed a full...
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]
Job Stories From Leesburg, VA
Creating Storage in Attic over Garage

Many home owners in Northern Virginia finish their basements for additional living space.  One of the unintended outcomes of this trend is that there is a shortage of storage space for items like Tax Returns, Christmas Decorations, Seasonal flower arrangement, luggage and the like.  You know, the things you need every now and then, but not that often.

One strategy to create a storage space for these items is to convert the attic space over the garage into usable storage. 

This project will be broken into phases:

1)      Install pull down Attic Stairs to improve access to the storage space.

2)      Install Radiant Barrier to reduce the temperature in the attic during the hot summers of Virginia.

3)      Address the vertical wall that separates the attic space from the conditioned space inside the house.

4)      Install flooring and shelving to create the storage space.

More to come as the project unfolds.

Creating Storage in Attic over Garage - Photo 1Creating Storage in Attic over Garage - Photo 2Creating Storage in Attic over Garage - Photo 3Creating Storage in Attic over Garage - Photo 4Creating Storage in Attic over Garage - Photo 5Creating Storage in Attic over Garage - Photo 6Creating Storage in Attic over Garage - Photo 7Creating Storage in Attic over Garage - Photo 8Creating Storage in Attic over Garage - Photo 9Creating Storage in Attic over Garage - Photo 10
Work Requests From Leesburg, VA
Vicinity of Southview PL NE in Leesburg
Believe attic requires additional/upgraded blown insulation.
Vicinity of Thomas Mill Road in Leesburg
Looking to get an estimate to do spray foam insulation in a garage loft apartment that we are creating. Apartment will be roughly 500 sq ft.
Vicinity of Stargell Terr in Leesburg
I think I have a mold issue in my wall some place and need an inspector to come out with your (not sure what you call it) but the instrument that sees water through walls.
Vicinity of Trenton Cir in Leesburg
Attic heat load causing stress on current HVAC system. Looking to inspect/replace current insulation as well as seal any areas causing issues.
Vicinity of Wingate Place SW in Leesburg
Master bedroom is too hot in the summer. We would like to see if the insulation is adequate. I am also interested in an estimate for an energy audit.
Vicinity of Watson Road in Leesburg
Looking to have insulation replaced/upgraded and a home efficiency review. Thank you.
Vicinity of Cranberry Lane in Leesburg
Our top level is 10+ degrees warmer than the middle level and would like to explore attic insulation options to better trap the cool air
Vicinity of Pershing Ave Nw in Leesburg
What to check into the condition of out attic and improving it. The house was built in 57 and is open, but appears to have an exhaust fan
Vicinity of Mill Spring Ct. in Leesburg
Our house is about 20 years old and the insulation in the attic has settled or moved in places and is very uneven. We would like an estimate to improve update the current insulation in the attic.
Vicinity of Lawford Drive SW in Leesburg
Attic insulation is thin (settled cellulose) and needs supplementing
Vicinity of Longhouse Pl in Leesburg
We have a room over our garage that is colder/hotter than the rest of the upstairs. It sounds like we should look at the insulation in the garage ceiling and possibly adding another air vent/intake in that room. I would like to get an estimate/schedule a visit for this. Thanks!
Vicinity of Nansemond St Se in Leesburg
Attic I believe needs insulation and one of my rooms needs sound deadening material from my neighbors loud kid
Vicinity of Tuckaway Pl in Leesburg
I'm looking at adding insulation over my garages. I have 2 bedrooms over my garages and they run about 15 degrees cooler in the winter than the rest of the house.
Vicinity of Collett Mill Ct in Leesburg
Looking to resolve and prevent drafts in 15yr old home
Vicinity of NAUTICAL JIVE DR in Leesburg
Need additional insulation (currently at 10 inch).
Vicinity of Shinniecock Hills Pl in Leesburg
House is 15 yrs old. Has blown in insulation but doesn't provide that great of insulation especially in a bedroom over the garage. I would like to have someone come out and give me an idea on what is the best option.
Vicinity of Goshen Farm Court in Leesburg
This person has filled out the Star Power Pro survey on that you sent them and is interested in another service you provide: insulation. Please contact them to schedule a new appointment for this service. This is a no-charge lead.
Vicinity of Foxfield Lane in Leesburg
We have a conditioned crawl space. After total renovation we would like all the insulation pulled out and new installed and the outside vents closed in.
Vicinity of Parkers Ridge Dr in Leesburg
Top floor in my house never seems to get cool in the summer. I am getting estimates on attic fans based on recommendations but I was also told that I should look into the insulation in my attic. Wondering if I can get some advice and knowledge on how we get the top floor of our home more comfortable.
Vicinity of PARK GATE DR SE in Leesburg
Upstairs get really Hot in the summer, and being told that we should add more insulation in the attic. Looking for estimates for R19 blown-in for about 2.300 sq ft. Thank you.
Serving the following Leesburg, VA zip codes
20175, 20176, 20177, 20178

our service area