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TRUSTED BY DERWOOD, MD HOMEOWNERS

  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon239
    Verified insulation services reviews

Verified Reviews for Insulation Service pros in Derwood, MD

*The Angi rating for Insulation Service companies in Derwood, MD is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Insulation Service needs.

*The HomeAdvisor rating for Insulation Service companies in Derwood, MD is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Insulation Service needs.

Last update on October 16, 2025

Find Insulation pros in Derwood

Avatar for Atlas Home Energy Solutions LLC
Atlas Home Energy Solutions LLC
4.9(
105
)

Serving Derwood, MD and surrounding areas

Approved

In business since 2009

Free estimates

Warranties offered

"Highly recommend. Exceptional and professional service from their contractors and most especially by Nolan Walker (Performance Consultant). Nolan showed photos taken of my home's ductwork and insulation and provided a list of options and the cost of each project so that I could make a well informed choice of which projects to pursue. He took his time and was honest and understanding - not aggressive like other companies I have dealt with. His test-out and follow-up appointment was just as thorough. It was a pleasure working with him."
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+16

Response time3 days
14 neighbors recently requested a quote
Recommended by97%of homeowners
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Avatar for RetroFoam of Philadelphia
RetroFoam of Philadelphia
5.0(
21
)

Serving Derwood, 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
130 neighbors recently requested a quote
Recommended by80%of homeowners
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Avatar for Terra Insulation
Terra Insulation
4.9(
7
)

Serving Derwood, 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
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Avatar for Founders Insulation
Founders Insulation
4.9(
17
)

Serving Derwood, MD and surrounding areas

Approved

In business since 2022

Free estimates

Credit card accepted

"Founders Insulation did a very good job on installing insulation in ceilings! They were careful, courteous and cleaned up."
Exterior Walls
Exterior Walls
Roof line
Exterior Walls
Exterior Walls

+11

Response time12 hrs
276 neighbors recently requested a quote
Recommended by75%of homeowners
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Avatar for Complete Home Solutions, LLC
Complete Home Solutions, LLC
3.9(
84
)

Serving Derwood, 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
16 neighbors recently requested a quote
Recommended by74%of homeowners
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Avatar for Atlas Home Energy Solutions
Atlas Home Energy Solutions
4.1(
34
)

Serving Derwood, 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
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Avatar for ROI Construction LLC
ROI Construction LLC
4.3(
16
)

Serving Derwood, MD and surrounding areas

Approved

In business since 1974

Free estimates

Warranties offered

"Great! Dom and his team were efficient, knowledgeable, polite, and they not only did a great job on the roof, they cleaned up wonderfully!"
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+19

41 neighbors recently requested a quote
Recommended by100%of homeowners
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Insulation questions, answered by experts

The most insulative type of insulation for behind drywall is spray foam insulation, but this is the most expensive insulation available. The most common insulation—sometimes considered the best for the value you get for the money—is fiberglass roll or fiberglass batt insulation, which is significantly more affordable but also far less insulative. The best kind of insulation for your house will also vary based on the climate in your area, your budget, and more. A professional insulation company can help you decide which type is best for your home.

Regular inspections for moisture damage, pest infestations, and proper R-value performance help maintain efficiency.

The cost to install a radiant barrier ranges from $700 to $2,800, depending on the size of your roof and the type you choose. Most people pay an average of $1,700 to install a radiant barrier. Foil options, both single- and double-sided, cost between $0.10 and $0.90 per square foot, while spray-on options start at $0.60 and go all the way up to $1 per square foot—which can add up quickly.

Vapor barriers in attics are a bit outdated and most areas no longer recommend them for attic spaces. For vented attics, the best method is usually to install drywall and cover it with latex paint before attaching insulation fiberglass, cellulose, or foam insulation. When renovating an attic to use as a living space, a contractor can guide you on the best way to cover insulation.

Sometimes you may be able to leave the bags with your regular trash. However, that’s not always the case. Call your local waste management prior to starting the removal and ask about the proper ways to recycle or dispose of removed insulation. In many cases, your town or municipality has a designated dumpster for building waste.

The Derwood, MD homeowners’ guide to insulation services

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

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