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  • Average homeowner rating star icon3.9
    Average homeowner rating
  • Verified reviews icon61
    Verified insulation services reviews

Top-Rated Insulation pros in Annapolis Junction - Updated Nov 2026

Avatar for Koala Insulation of The Greater Baltimore Area
Koala Insulation of The Greater Baltimore Area
4.8(
13
)
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or UpgradeInjection Insulation - Install+1 more

Serving Annapolis Junction, MD and surrounding areas

Approved

In business since 2023

Free estimates

Warranties offered

"We had insulation installed a week earlier by Koala. During the insulation, Jasper (insulator) suggested another area that we might consider installing blown-in insulation. We agreed and the second job was performed on Friday, the 24th. Jasper and Richard were on time, the insulation project was well done and they left the area very clean. Would use them again."
Insulation Projects
Spray Foam Insulation
Insulation Projects
Blow-in Rig
Truck

+9

Response time8 hrs
1 neighbors recently requested a quote
Recommended by83%of homeowners
Avatar for Complete Home Solutions, LLC
Complete Home Solutions, LLC
3.9(
85
)
Blown-In Insulation - Install or UpgradeSpray Foam Insulation - InstallBatt, Rolled or Reflective Insulation - Install or Upgrade

Serving Annapolis Junction, MD and surrounding areas

Approved

In business since 2002

Free estimates

Warranties offered

"I would just like to thank this company for the work they did in my home! Iâ m very late writing my review but I wanted to see how different my home felt since having this service. Complete Home Solutions serviced my house on November 20, 2020, The crew consisted of Brad, Jason, Aaron and John B. There was another individual who did my drywall work, but I didnâ t get his name. There are no words to describe how much I appreciate your professionalism, knowledge, experience, cleanliness, kindness...etc. You guys did such a wonderful job! Since getting insulation put in my sonâ s room, I can feel the difference, a huge difference!! Also, I would like to thank Noah for the first initial visit and explaining to me in detail about the difference in the products. If youâ re looking for a company to provide service to your home, thereâ s no need to look any further! Iâ m looking forward to hiring them again, for my crawl space."
 Stone Front of Addition
 Kitchen
 .
 After
Screened Porch and Deck

+93

Response time1 day
43 neighbors recently requested a quote
Recommended by73%of homeowners
Avatar for Terra Insulation
Terra Insulation
4.4(
16
)
Batt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or UpgradeInjection Insulation - Install

Serving Annapolis Junction, MD and surrounding areas

Approved

In business since 2020

Free estimates

Credit card accepted

"I needed a company that would blow insulation into the walls of my basement. Terra Insulation did the job for me. The technicians were expert at drilling the holes, adding the insulation and clean up. They were professional and informed me of when they were taking a break, etc. They even replaced the disks and added drywall paste to ready the walls for my painter. I highly recommend this company for its dependability and expert installation."
R-49 Blown Fiberglass
Baffle Vents
Recessed Can Light Covera
Attic Penetrations- before air sealing
Air Sealing After

+1

Response time3 days
Response rate97%
Recommended by92%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 Annapolis Junction, MD and surrounding areas

Approved

In business since 2009

Free estimates

Credit card accepted

"Our first interaction with Atlas was with Shannon. As knowledgeable and personable as one could hope for. She clearly explained cost effective measures to better insulate our house. We opted for sealing and insulating our attic and weather stripping a number of doors. We were very pleased with the workmanship and the energy savings they produced. They also helped us get a PEPCO credit which reduced the overall cost of the job. A winner!"
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 Elite Thermal East
Elite Thermal East
4.3(
105
)
Blown-In Insulation - Install or UpgradeSpray Foam Insulation - InstallBatt, Rolled or Reflective Insulation - Install or Upgrade

Serving Annapolis Junction, MD and surrounding areas

Approved

Super Service Award Winner

In business since 2021

Free estimates

Credit card accepted

"Chad was very helpful, informative and gave us exactly what was needed and asked for our ceiling project. Not one complaint. Job was completed on time, work area cleaned, insulation had the desired effect. Not once complaint - Thank you Elite Thermal for a stress free job! Its a rare experience in construction projects!!"
Cellulose Blown Insulation - Rem/Repl Before/After
Cellulose Blown Insulation - Before/After
Cellulose Blown Insulation - Before/After
Fiberglass Batt - Before/After
Fiberglass Batt - Remove & Replace - Before/Af

+5

Response time1 day
Response rate95%
80 neighbors recently requested a quote
Avatar for Xanvria LLC
Xanvria LLC
5.0(
3
)
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or Upgrade

Serving Annapolis Junction, MD and surrounding areas

Approved

Free estimates

Credit card accepted

"⭐️⭐️⭐️⭐️⭐️ Excellent Service from Start to Finish! I highly recommend this contractor! From the initial estimate to the follow-up communication and final completion of the job, the entire experience was professional, seamless, and efficient. The quality of work was outstanding, and the results were noticeable immediately. As soon as the job was completed, our home felt warmer and more comfortable. Even now, we can still feel the difference! It's refreshing to work with a contractor who delivers on their promises and takes pride in their work. I truly appreciate the excellent service and attention to detail. I would absolutely hire them again and highly recommend them to anyone looking for quality workmanship and dependable service!"
before
after
Insulation
Insulation
2 neighbors recently requested a quote
Avatar for B Marshall
B Marshall
4.6(
100
)
Spray Foam Insulation - Install

Serving Annapolis Junction, MD and surrounding areas

Approved

In business since 1999

Free estimates

Emergency services offered

"The B. Marshall Home Improvement group was fantastic. I had a deck cleaned and stained, two safety hand rails built and installed, exterior paint, flag pole holder applied! They were on time and very professional! They made sure that I was completely satisfied with the jobs. The cleanup was complete. They were respectful. The Marshalls are to be commended. For their dedication and hard work! I highly recommend them!!! Great job Marshalll Home Improvement!!"
Response time2 days
Response rate88%
6 neighbors recently requested a quote
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Insulation FAQs, answered by experts

Water heater blanket prices range from $20 to $40 on average, though you typically won’t need to spend more than $30 for all the tools and materials required for installation—which include the blanket itself, heavy-duty scissors, and electrical tape. Blankets with higher R-values will also be slightly higher in price.

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.

If you plan to heat or cool your garage, you’ll need to insulate the garage ceiling. Insulating your garage ceiling will make your garage much more energy efficient and save on heating and cooling costs. Not only does insulation make your garage more energy efficient, it helps reduce noise and can extend the life of your garage roof. You can use fiberglass, cellulose, mineral wool, or spray foam insulation for this project.

If you feel your energy bills are too high or your HVAC system is working harder than necessary to maintain the correct temperature in your home, you may have an under-insulated home. If you’re unsure, consider having your system’s efficiency assessed by a local independent energy auditor.

Blown-in insulation works, but only for unfinished attics. Also, it isn’t the longest-lasting nor the most effective option. For better options, look into spray foam insulation or natural fiber batts. They typically have a longer lifespan, better heat resistance, and stronger sound-proof abilities. Spray foam insulation costs about $1.25 to $1.50 per square foot, but can go up to more than $4 per square foot. Fiber batt pricing varies depending on the material.

The Annapolis Junction, MD homeowners’ guide to insulation services

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