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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

Before and After Pictures from Sterling
Utility Room air sealing-Sterling, VA

Utility Room air sealing-Sterling, VA

Before After
Utility Room air sealing-Sterling, VA Utility Room air sealing-Sterling, VA

This Sterling, VA homeowner had a utility room that backed up to their garage.  There was a lot of air leakage allowing cold air to travel through the utility room and into the basement making it cold in the winter. 

Thermax foam boards and one part foam was used to seal this air leakage off, and to keep it safe from flammability.  Thermax is a fire resistant material.

Cold Storage Area-Sterling, VA

Cold Storage Area-Sterling, VA

Before After
Cold Storage Area-Sterling, VA Cold Storage Area-Sterling, VA

This Sterling, VA homeowner had a nice storage area beneath the stairwell that is adjacent to their garage. The cold garage air made this room very cold int he winter.  Comfenergy used Thermax foam boards and two part foam to air seal it and make it warm to put to better use! 

Attic Access Installation in Sterling, VA

Attic Access Installation in Sterling, VA

Before After
Attic Access Installation in Sterling, VA Attic Access Installation in Sterling, VA

This Sterling, VA homeowner called us out to lower his energy bills, but we couldn't get into the attic because there was no access. We cut the drywall and created a new access with trim. 

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

Respected Home Insulation & Energy Audit Contractor Serving Sterling

 I appreciate how prepared he was, how he took the time to listen to my concerns, and didn't try to...
Happy Customers Surrounding Sterling, VA
Testimonials
Reviews
Work Requests

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

Reviews From Sterling
Testimonials From Sterling
Wow! Comfenergy came to our house to conduct an energy assessment, and it far exceeded our expectations. With a special tool, Justin basically x-rayed our...
Testimonial by Tina N. from Sterling, VA
Ismael, Rafael, and Jordan did an outstanding job! I will ask for them again as our remodeling contunes.
Testimonial by John C. from Sterling, VA
Crew was very thorough, clean, friendly, accomodating, offered suggestions, and were happy to make changes.
Testimonial by Michelle P. from Sterling, VA

Home Insulation Experts Serving Sterling, VA

Comfenergy is Sterling'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

Sterling’s Trusted Window & Door Replacements

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

  • 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 Sterling 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 Sterling, 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 Sterling
New
This homeowner in Potomac Falls, VA noticed that his gutters were constantly clogged with leaves. The home is located in a wooded area and surrounded...
Magnetite
The team at Comfenergy needed training in a new product used for Sound Control improvements in windows as well as Insulating Windows.
Duct
Part of providing excellent customer service is keeping our teams up to date on how things work / or don't work. Duct leakage is a major compoent of...
Press Releases From Sterling
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 Sterling, VA
Project Location: Sterling, VA
Would like a quote on insulating attic area over our garage.
Project Location: Sterling, VA
Townhome that feels drafty all winter. I've taken some steps but would like to see a quote for additional steps.
Project Location: Sterling, VA
We are looking for a quote for attic insulation. The house is 26 years old and we would like to check the condition of the existing insulation and add more to the new standards. Energy efficiency is important for us.
Project Location: Sterling, VA
We would like to have our old attic insulation removed and new insulation installed. Hoping to improve overall energy efficiency in our home.
Project Location: Sterling, VA
Bought a house and previous owners had rodents get into the attic and they defecated and wore down the insulation in there.
Project Location: Sterling, VA
Install batt insulation in attic
Project Location: Sterling, VA
We need to insulate our house!
Project Location: Sterling, VA
Electric bill increasing
Project Location: Sterling, VA
Our upstairs is routinely difficult to cool in the summer and, conversely, difficult to heat in the Fall and Winter. Our house was built in the 80s and I believe has never had the insulation updated. We are interested in an energy audit and to better understand your offerings.
Project Location: Sterling, VA
I have outside air infiltration in my main utility wall that's causing condensation on my duct work and subsequent water damage. I'd like to talk about insulating and sealing that area to prevent further damage.
Project Location: Sterling, VA
Our attic does not seem to be well insulated and hot air is leaking into our home.
Project Location: Sterling, VA
I'd like to do a home audit program as part of the Dominion Home Energy Assessment Program
Project Location: Sterling, VA
Hi - I am wanting someone to estimate fixing our attic insulation. Our upstairs is very hot compared to the rest of the house.
Project Location: Sterling, VA
Check attic insulation and be more energy efficient.
Project Location: Sterling, VA
I'd like an estimate for insulating a finished basement with spray foam.
Project Location: Sterling, VA
Looking to add additional attic insulation and maybe garage attic insulation, depending on cost.
Project Location: Sterling, VA
Our cats hav found 2 mice so we would like to seal our perimeter so they can't get in.
Project Location: Sterling, VA
Looking to sound proof a room, bathroom, and small hallway
Project Location: Sterling, VA
I need an energy audit done on my house. Justin Dobson suggested that I mention the FB conversation in our neighborhood group regarding this subject for a free audit. Thanks
Project Location: Sterling, VA
Need rolled insulation removed in our crawl space.
Serving the following Sterling, VA zip codes
20163, 20164, 20165, 20166, 20167

our service area

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