Top-rated insulation pros.

Best insulation pros near Catonsville, MD

Enter your zip and get matched with up to 5 pros

Need a pro for your insulation service project in Catonsville, MD?

Select your specific project to find the pro for you.

TRUSTED BY CATONSVILLE, MD HOMEOWNERS

  • Average homeowner rating star icon4.3
    Average homeowner rating
  • Verified reviews icon122
    Verified insulation services reviews

Verified Reviews for Insulation Service pros in Catonsville, MD

*The Angi rating for Insulation Service companies in Catonsville, 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 Catonsville, 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 March 20, 2026

Top-Rated Insulation pros in Catonsville - 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 Catonsville, 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
Request Quote
Avatar for JT Insulation, LLC
JT Insulation, LLC
5.0(
6
)
Blown-In Insulation - Install or UpgradeSpray Foam Insulation - Install

Serving Catonsville, 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
Recommended by16%of homeowners
Request Quote
Avatar for RetroFoam of Philadelphia
RetroFoam of Philadelphia
5.0(
22
)
Spray Foam Insulation - InstallInjection Insulation - Install

Serving Catonsville, MD and surrounding areas

Approved (Corporate)

In business since 2023

Free estimates

Warranties offered

"We are extremely satisfied with the whole process of our house being insulated. First we had the walls done, and then a couple weeks later we had our attic insulated. The crew were so nice, friendly, and knowledgeable. We are very satisfied with everything. Thank you, everyone."
RetroFoam Wall Insulation
Installing RetroFoam
RetroFoam with Siding
RetroFoam with Brick
Response time1 day
Response rate100%
124 neighbors recently requested a quote
Request Quote
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 Catonsville, MD and surrounding areas

Approved

In business since 2020

Free estimates

Credit card accepted

"Very professional and provided a thorough assessment of my insulation needs. Excellent customer service."
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
Request Quote
Avatar for Home Genius Exteriors
Home Genius Exteriors
4.9(
1,251
)
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or Upgrade

Serving Catonsville, MD and surrounding areas

Approved

Super Service Award Winner

In business since 2004

Free estimates

Emergency services offered

"They did a great job on my insulation"
WINDOWS
WINDOWS
WINDOWS
WINDOWS
SIDING

+73

Response time4 hrs
Response rate93%
2658 neighbors recently requested a quote
Request Quote
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 Catonsville, 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
Request Quote
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 Catonsville, 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%
74 neighbors recently requested a quote
Request Quote
Avatar for Xanvria LLC
Xanvria LLC
5.0(
5
)
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or Upgrade

Serving Catonsville, MD and surrounding areas

Approved

Free estimates

Credit card accepted

"We had Xanvria remove the old insulation in our attic, air seal the attic, and install new R-49 batts. They did a really good job, were professional, and explained what they were doing along the way. Everything came out clean and we?re very happy with the work. I would definitely recommend them."
before
after
Insulation
Insulation
2 neighbors recently requested a quote
Request Quote
Avatar for B Marshall
B Marshall
4.6(
100
)
Spray Foam Insulation - Install

Serving Catonsville, MD and surrounding areas

Approved

In business since 1999

Free estimates

Emergency services offered

"B.Marshall Home Improvements did an excellent job cleaning off all the moss and mold growing on our roof. They also sealed the roof . They also painted the vent pipes to match the roof without asking and no extra charge. This a father son local business who are professional. I would hire again ."
Response time2 days
Response rate88%
5 neighbors recently requested a quote
Request Quote
...
Showing 1-10 of 78
Insulation FAQs, answered by experts

Insulation in Catonsville requires occasional checks for moisture, settling, or pest intrusion, especially after heavy storms. Inspect attics and crawl spaces annually for signs of water damage or compressed insulation. Spray foam should be checked for cracks, while cellulose may need topping up over time. Managing indoor humidity and promptly addressing leaks will help maintain your insulation’s effectiveness for years.

Helpful?

Upgrading insulation in Catonsville can make your home more attractive to buyers seeking energy-efficient features. Enhanced insulation is a strong selling point, especially in older neighborhoods. Documenting improvements—such as before-and-after energy audits or insulation certificates—can set your property apart, increase perceived value, and help your home stand out in a competitive real estate market.

Helpful?

In Catonsville, attics benefit from high R-value blown-in cellulose or fiberglass to handle seasonal temperature swings. For exterior walls, dense-pack cellulose or closed-cell spray foam helps with air sealing and moisture resistance. Basements and crawl spaces should use rigid foam boards and vapor barriers to prevent dampness. Given local humidity, prioritize materials that resist mold and improve overall home energy efficiency.

Helpful?

Insulation service projects in Catonsville deliver immediate comfort by reducing drafts and stabilizing indoor temperatures. In the long term, you’ll notice lower utility bills, less wear on your HVAC system, and improved home energy efficiency. Enhanced insulation also helps control indoor moisture and allergens, supporting better air quality and making your home more resilient to seasonal weather changes.

Helpful?

If your Catonsville home feels drafty in certain rooms, has fluctuating temperatures between floors, or you notice cold spots near outlets and exterior walls, it’s likely under-insulated. Homes built before modern energy codes or with recent additions often have gaps in insulation coverage. Scheduling a home energy efficiency assessment can reveal hidden air leaks and pinpoint areas where insulation service projects will have the greatest impact.

Helpful?

The Catonsville, MD homeowners’ guide to insulation services

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

See all articles