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    Verified insulation services reviews

Find Insulation pros in North Potomac

Avatar for Koala Insulation of Washington DC
Koala Insulation of Washington DC
5.0(
14
)
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or UpgradeSpray Foam Insulation - Install

Serving North Potomac, MD and surrounding areas

Approved

In business since 2025

Free estimates

Warranties offered

Here at Koala Insulation of Washington DC, we pride ourselves on our professionalism, as well as our ability to complete every job to the homeowner's total satisfaction. We never leave a job unfinished, or a homeowner not 100% satisfied with our level of service. We handle insulation work in Washington DC and the surrounding areas - Call today!\n\n

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36 neighbors recently requested a quote
Avatar for Terra Insulation
Terra Insulation
4.9(
7
)
Blown-In Insulation - Install or UpgradeSpray Foam Insulation - InstallBatt, Rolled or Reflective Insulation - Install or Upgrade+2 more

Serving North Potomac, MD and surrounding areas

Approved

In business since 2020

Free estimates

Warranties offered

"Great! Job was complete .... removal of existing 50+ year old insulation, air sealing attic, baffle installation, installed 18 inches new fiberglass blown insulation, and new whole-house fan. Job started and completed as proposed. Crew on-time, quietly performed their work, and left spaces clean when done. Definitely worth the cost as noticeable improvement in second floor temperature and humidity readings."
Owens Corning ProPink R-49 Blown-In Insulation. Our most popular product
These vents help your attic circulate air. With attics reaching over 120 degrees in the summer these are very important. They prevent mold and increase the lifetime of your insulation. Most other contractors miss installing these.
Look at the difference! Our foam is fire-rated which allows us to air seal around penetrations that contractors never could before.
Most homes have penetrations all over there attic. Imagine trying to blow up a balloon with a bunch of holes. It will never fill up. Now imagine trying to blow up your house with air conditioning and heating with a bunch of holes in the attic. It will never fill up.
Recessed can lights are notorious for leaking air. Recessed can light covers help with air-sealing your living space and prevent fires.

+1

Response time3 days
6 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Atlas Home Energy Solutions
Atlas Home Energy Solutions
4.1(
34
)
Batt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or UpgradeSpray Foam Insulation - Install

Serving North Potomac, MD and surrounding areas

Approved

In business since 2009

Free estimates

Credit card accepted

"I hired Atlas Home Energy Solutions to remove old insulation and replace it with the foam technique. However, I ran into numerous unexpected problems due to a slow leak from old pipes. It took awhile to sort out. Atlas Home Energy Solutions gave me lots of expert advice. They were willing to come out and review the situation. They were also willing to reschedule and wait until another contractor dealt with the water issue and its ensuing problems. They helped me make some difficult decisions before they could insulate the crawl space. When it was ready for them to come and insulate the area they bumped their schedule forward to get it done. This company did sterling work. Their expertise and professionalism were outstanding. They really know what they are doing and guided me through a more protracted process than originally envisioned. I would highly recommend them to anyone."
Visual Inspection of all Areas of your Home
Attic Insulation and Air Sealing
Infrared Camera Inspection
Attic Spray Foam
Blower Door Whole House Air Leakage Test

+11

Response time1 day
Recommended by87%of homeowners
Avatar for Atlas Home Energy Solutions LLC
Atlas Home Energy Solutions LLC
4.9(
106
)
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or UpgradeInsulation - Install or Upgrade+1 more

Serving North Potomac, MD and surrounding areas

In business since 2009

Free estimates

Warranties offered

"I contacted Atlas not because of high energy bills but because of noticeable summertime temperature differences between the first and second floors. My home is 32 years old and had never had the ducts cleaned and I suspected there was leakage from seams in the duct work. While the house was built to the then current (1988) code levels, the code is now more stringent. For example, my attic insulation was R30 where code is now R50. Atlas first performed an energy audit. Based upon that outcome, they recommended: (1) rerouting the bathroom exhaust fans through the roof, (2) additional insulation in the attic bringing it to R50. (3) closed cell foam sealing in the main and garage attics where appropriate, (4) cleaning the heating/cooling ducts and (5) using the AeroSeal product in the same ducts. I opted for all of these services. The work was spread over 3 occasions, each no more than 2 days duration with most completed in a single day. Their friendly work crews were very attentive to my property, made sure to put down drop cloths throughout the house and generally made certain everything was clean upon leaving. They kept me informed throughout every task and showed/explained what they had encountered. My ducts certainly did need cleaning, even though it’s always been a smoke free home environment and without pets. The benefits of this work have been fantastic. The AeroSeal process yielded a 98% reduction in duct leakage. I can tell very little temperature difference between the first and second floors now. I’m expecting more noticeable improvements during the winter months. I strongly without reservation recommend Atlas Home Energy Solutions."
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+16

Response time3 days
Response rate100%
1 neighbors recently requested a quote
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Insulation questions, answered by experts

Structural insulated panels and rigid foam boards have the highest R-value of any insulation that contractors commonly use, with R-values reaching up to around 8.0. These types of insulation are best in extremely cold climates, but they’re generally preferred for new construction, as they can be challenging to retrofit. Blown-in and loose fill insulation provide the next best insulative value, provided the installation is done properly. It’s important to choose an insulation type that meets your needs based on climate, as maximizing R-value may not always be financially worthwhile if you live in a moderate climate.

Rockwool insulation can last up to 100 years, but just how long this insulation lasts in your home depends on how well it's maintained. Poorly installed insulation may last only 30 years, so be sure to regularly inspect your home's insulation for water damage, settling, and pests to give your insulation the best chance of having a long lifespan.

Yes, doggie doors, like all entrances, can let both hot and cold air into your home. However, as with any door in your house, you can take steps to weather-strip your pet's entrance to prevent air leaks.

The cost of installing spray foam insulation is $2,760 on average, but this cost can be as low as $650 or as high as $7,700. The main cost factor is the size of the insulated area and the type of spray foam insulation. 

Polyurethane spray foam costs between $0.44 and $1.50 per board foot, where a board foot is equal to the volume of a one-foot length of a board. More expensive options, like soybean or vegetable oil spray foam, range from $1.50 to $3.00 per board foot.

Yes, it is possible to have too much insulation, which can have detrimental effects. While more insulation might seem better for energy efficiency, a home needs to "breathe" or ventilate to release moisture that accumulates inside. Over-insulating can seal a house too tightly, trapping water vapor and leading to several problems, including mold, mildew, and condensation. Homes in warm, humid climates are particularly susceptible to mold, while those in colder climates can experience condensation from temperature fluctuations. Additionally, adding more insulation than the recommended amount for your climate may not provide recoverable energy savings. To avoid these issues, consult a professional insulation contractor who can determine the optimal amount of insulation for your home.

The North Potomac, MD homeowners’ guide to insulation services

From average costs to expert advice, get all the answers you need to get your job done.