Spray Foam Insulation

Expert Spray Foam Insulation Company Near Ashburn, Reston, Sterling

Improve your home comfort with moisture-proof spray foam insulation services

Spray foam insulation in Fairfax Station

A versatile energy-saver. 2-part spray foam expands after it's applied, creating an effective thermal and moisture barrier. Thanks to its unique properties, it can be used to solve comfort & energy problems in many parts of the house.

The insulation "team" that's supposed to make our homes comfortable and energy efficient is truly a motley crew. In the old days, sawdust was sometimes dumped inside walls to slow heat loss. Then came vermiculite — porous lightweight pebbles with the look and feel of kitty litter.

Today we still rely on an old-timer, fiberglass batt insulation that's made from spun glass fibers. But if you're looking for a star player on the insulation team, a standout with qualities that other types of insulation can't touch, it's got to be spray foam. More specifically, we're talking about closed-cell polyurethane spray foam.

Increase your comfort and decrease your energy bills with spray foam insulation in Ashburn, Reston, Sterling, and nearby cities and towns such as Great Falls, Herndon, Vienna, Middleburg, Purcellville, Fredericksburg, Arlington, and Woodbridge. We are your trusted spray insulation contractor in Virginia.

Before and After
  • Basement Spray Foam-Cross Junction, VA
    Basement Spray Foam-Cross Junction, VA

    This Cross Junction, VA homeowner was looking for the most comfortable, most efficient way to insulate their basement when remodeling.  Comfenergy suggested the perfect solution with closed cell spray foam insulation. This completely air seals and insulates at the same time for the best results you can get!

  • Insulating Barn Walls in Boston, VA
    Insulating Barn Walls in Boston, VA

    Homeowners in Boston, Va have a farm and wanted to insulate the walls in their barn. One of our evaluators, Pedro, determined that closed cell spray foam would do the best job at insulating this space. Closed cell spray foam adheres to all surfaces, expands in place, and air cannot pass through it. It has an R value of 6.3 per inch and with it's ability to stop air flow, it is superior insulation. One inch of closed cell foam sprayed in place is worth many inches of other insulation materials. This is why spray foam is used in most "zero energy" homes. 

  • Duct Sweating-Linden, VA
    Duct Sweating-Linden, VA

    This Linden, VA homeowner had mold growing on the drywall in the garage ceiling that was causd by the HVAC duct work above the drywall sweating in the summer time.  This duct sweating is caused by hot/humid air hitting the cold metal ducting.  This makes the air hit dew point and sweat.  Then, it dripped on their drywall and over time caused mold to grow.

    Comfenergy removed and disposed of the dryall where the mold was growing.  Then, we completely encased the metal ducting with closed cell spray foam to air seal it and protect it from the hot/humid air entering the cavity the duct runs through.

  • Cold Rooms-Rixeyville, VA
    Cold Rooms-Rixeyville, VA

    This Rixeyville, VA homeowner was complaining about a cold room on the upper level of their home. After a full comfort evaluation provided for FREE by Comfenergy we found an attic that was adjacent to this room. The wall adjacent to this attic was merely insulated with fiberglass batts.  The problem with this is that fiberglass does NOT stop air from travelling around and through it.  This is why your furnace filter is made of fiberglass. It allows the air through, but not the dust and dirt.

    Comfenergy solved this issue by using 2" thick EPS SilverGlo foam boards to secure on this wall to provide a good air barrier and an additional R10 thermal insulation value.

    Now this room is toasty warm and can be used in cold winter months!!!

  • Spray Foam Crawl Space
    Spray Foam Crawl Space

    This crawl space in Delaplane, VA was encapsulated using closed cell spray foam.  This was done to make the floors above the crawl space warmer in the winter.

Customer Reviews

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There are two basic types of spray foam insulation:

1-part foam: You've seen and probably used this type of spray foam, which comes in pressurized cans that are sold at home centers and hardware stores under brand names like GREAT STUFF™. This single-component foam is super-sticky, and expands at different rates (depending on the type you buy) immediately after application. Since it seals gaps as well as insulates, this product is often referred to as an "insulating foam sealant."

2-part foam: To insulate an entire basement or attic with spray foam, contractors use 2-part polyurethane foam that comes in a pair of pressurized metal containers. When both components (resin and a catalyst) are mixed together at the nozzle, a foaming chemical reaction takes place that causes the material to expand.

Spray foam advantages:

R value. Poly spray foam has a higher R-value per inch than any other commonly used insulation —R-6.2 or higher, depending on the formulation.

Air barrier: Spray foam air-seals and insulates in one step. Its ability to expand and fill gaps and cracks make it an ideal air-sealing material, and it stays in place because of its super-adhesive qualities. Spray foam is often spot-applied as an air-sealing treatment prior to filling an attic with blow-in insulation. But when applied in more generous amounts, it can eliminate the need for other types of insulation.

Waterproof: Moisture will soak its way through fiberglass and cellulose insulation, but polyurethane spray foam stops it cold. Its closed cell structure means that water can't migrate from one tiny cell or bubble to a neighboring one.

Foolproof: Did you know that a void (missing insulation) of just 5% of an insulated area can diminish overall insulation performance by as much as 50%? It's very difficult to install fiberglass insulation perfectly, so voids are not uncommon. But spray foam's expanding, super-sticky characteristics just about eliminate the possibility of voids. And once the foam cures, it's not going to settle or shift like fiberglass or cellulose can.

Spray Foam Can Be Troublesome to Apply by Yourself!

Tricky: It takes experience to get the feel of applying spray foam, especially two-part foams. With their different expansion rates and other qualities, they prove difficult for someone without experience to get the most of this material. For example, a high-expanding foam will damage a door or window jamb, but our training and experience can prevent this from happening.

Oftentimes, spray foam can also be wasted and get messy -- but our fully trained specialists know how to get the job done well the first time! 

Temperature sensitive: Cold temperatures affect the chemistry that causes the foaming action. It's critical to keep spray foam cans or two-part foam canisters within a specific temperature range for successful application.

Be sure to check out our comparison between spray foam and rigid foam insulation. We also provide assistance in choosing the best spray foam insulation.

Get Your Spray Foam Cost Estimate Today!

Contact us today for a Free Estimate -- we are your trusted spray foam insulation contractor in Reston, Sterling, Ashburn, Herndon, Great Falls, Middleburg, Purcellville, Fredericksburg, Vienna, Fairfax, and more, including Stafford.

We also offer a comprehensive home energy audit to diagnose the major contributors to your home's energy issues.