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4.5

(271 reviews)

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Avatar for Prudent Homes
Prudent Homes
4.7(
236
)

Serving Potomac, MD and surrounding areas

Approved

In business since 2002

Free estimates

Warranties offered

"I am very impressed with the work that David and his assistant from Prudent Homes performed in our basement. They completed the work in one day on two different occasions and it was a fairly large insulation project. They had to use 2 different types of insulation. David explained all work to be done upfront and provided an estimate which was very fair. They were polite, knowledgeable and very clean in the areas where they performed work. You would not have known they were in our house. Also, they arrived at our house at the exact time they stated on both occasions. We have had problems with other contractors in the past with this issue. I would definitely use this company again and recommend them to all of my friends, neighbors and family."
26 neighbors recently requested a quote
Recommended by95%of homeowners
Avatar for JT Insulation, LLC
JT Insulation, LLC
5.0(
6
)

Serving Potomac, MD and surrounding areas

Approved

In business since 2023

Free estimates

Warranties offered

"Very prompt. Gave us a great price and did a wonderful job installing insulation in a tight area. Would definitely hire him again."
Response time1 day
1 neighbors recently requested a quote
Recommended by16%of homeowners
Avatar for Atlas Home Energy Solutions LLC
Atlas Home Energy Solutions LLC
4.9(
105
)

Serving Potomac, MD and surrounding areas

Approved

In business since 2009

Free estimates

Warranties offered

"Between Brad K., the company’s support team, and the crews who come out to do the job and execute the work, you cannot select a better company to help you make your home energy efficient and reduce your utility bills by insulating the house and sealing your duct work. As for Brad K., the job begins with Brad coming to your house and conducting an Energy Audit. This gives everyone a far better understanding as to what needs to be done in your home. And, Brad concludes with conducting a “ Test Out,“ to see the improvements. Pepco will offer you a partial rebate for the work completed and they are very satisfied with a 20% reduction. As for us, we hammered Brad with dozens of questions over the course of time before and after we ratified an agreement. In every case, Brad was extraordinarily responsive especially with him being burdened performing audits throughout the day and being offsite. We couldn’t be happier with Brad’s performance. The same goes for the inside team including Jeff, Gordon and Ashley. And, everyone of the guys and their team leads who came to the house not only focused on executing their expertise, but were also very customer focused. In our case, the “test out demonstrated a 36% reduction,“ and Brad believes the partial rebate will be even greater. A Little Constructive Feedback Here: Be sure to ask and fully understand what needs to be done prior to the crews arriving. We had three teams over three days (not in a row) and learned at that moment what more needed to be done to fully finish the job. This will minimize to virtually eliminate any further challenges for the crews and yourselves. However, the job was completed. Over the next 45 days or so, after our utility bill fully cycles, we look forward to seeing the results of Atlas’s work and the reduction in our utility bills. Atlas Home Energy Solutions is Your Best Buy. We are certainly available to provide any further references. RichandJames Peterson Silver Spring, MD (301) 592-1616 Email: [email protected]"
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+16

Response time3 days
14 neighbors recently requested a quote
Recommended by97%of homeowners
Avatar for Koala Insulation of Washington DC
Koala Insulation of Washington DC
5.0(
14
)

Serving 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

Project Photos
Project Photos
27 neighbors recently requested a quote
Avatar for Terra Insulation
Terra Insulation
4.9(
7
)

Serving 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
2 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Founders Insulation
Founders Insulation
4.9(
17
)

Serving Potomac, MD and surrounding areas

Approved

In business since 2022

Free estimates

Credit card accepted

"I had a wonderful experience with Founders Insulation. They were extremely easy to work with. It was easy to schedule an appointment, the gentleman who came out was knowledgeable and polite, and I felt that I received good information and they did not try to sell me something I did not need. Their quote was excellent. The work was scheduled and completed quickly. The installation team was courtesy, thorough, and knew their stuff. They were respectful of my home and went above and beyond. I highly recommend this company."
Exterior Walls
Exterior Walls
Roof line
Exterior Walls
Exterior Walls

+11

Response time12 hrs
273 neighbors recently requested a quote
Recommended by75%of homeowners
Avatar for RetroFoam of Philadelphia
RetroFoam of Philadelphia
5.0(
22
)

Serving Potomac, MD and surrounding areas

Approved (Corporate)

In business since 2023

Free estimates

Warranties offered

"These guys were professional, on time and communicated very well... I would recommend this company to you for all your Spray Foam Insulation needs..."
RetroFoam Wall Insulation
Installing RetroFoam
RetroFoam with Siding
RetroFoam with Brick
Response time1 day
125 neighbors recently requested a quote
Recommended by75%of homeowners
Avatar for Complete Home Solutions, LLC
Complete Home Solutions, LLC
3.9(
84
)

Serving Potomac, MD and surrounding areas

Approved

In business since 2002

Free estimates

Warranties offered

"The company did an assessment that we did not need as much insulation as we thought. The gave us a better approach which was cheaper and more efficient."
 Stone Front of Addition
 Kitchen
 .
 After
Screened Porch and Deck

+93

Response time1 day
10 neighbors recently requested a quote
Recommended by74%of homeowners
Avatar for Atlas Home Energy Solutions
Atlas Home Energy Solutions
4.1(
34
)

Serving Potomac, MD and surrounding areas

Approved

In business since 2009

Free estimates

Credit card accepted

"The team from Atlas did an excellent job of installing spray foam in my attic, adding additional loose fill in another portion of my attic, and sealing my ducts. Would certainly hire again for other insulation projects and highly recommend them."
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
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Insulation questions, answered by experts

If you have access to the foundation walls, adding spray foam insulation to your existing unfinished basement or crawl space is straightforward. Replacing existing insulation in your unfinished attic space is possible after removing the old insulation. However, spray foam insulating an existing wall after the drywall is in place isn’t possible unless you remove most of the drywall.

In some areas, insulation companies require a special license, while some states only require them to hold general contractor licenses. Some municipalities may not mandate any license, although you should always ensure a contractor is fully insured. You can use Angi’s license lookup tool to confirm whether or not an insulation contractor you’re considering holds the necessary license for your area. You can also contact the company for information regarding licenses, certifications, and insurance.

Insulating under a concrete slab foundation is a great way to improve the energy efficiency of your home, but it isn't necessary for outdoor projects like driveways, patios, sidewalks, and walkways. If you’re pouring in cold weather, insulating under the slab can help prevent heat loss from the concrete, aiding in proper curing. Along with accelerants, this can be a good way to ensure strong concrete despite pouring in the cold.

Durable materials suited for climate include aluminum for coastal areas or composite wood in varying environments for durability and minimal upkeep.

The life span of fiberglass insulation can be as long as 80 to 100 years, but because of changing building codes, it’s best to get your insulation checked every 10 to 15 years. Signs of degrading fiberglass insulation include bits of batts on the floor or batts detached from frames. Having optimal, healthy insulation in your home will improve its energy efficiency, lowering your monthly bills.

The Potomac, MD homeowners’ guide to insulation services

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