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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

Find Insulation pros in Catonsville

Avatar for Koala Insulation of The Greater Baltimore Area
Koala Insulation of The Greater Baltimore Area
4.8(
13
)
Batt, Rolled or Reflective Insulation - Install or UpgradeBlown-In 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
Recommended by83%of homeowners
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Avatar for JT Insulation, LLC
JT Insulation, LLC
5.0(
6
)
Spray Foam Insulation - InstallBlown-In Insulation - Install or Upgrade

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
1 neighbors recently requested a quote
Recommended by16%of homeowners
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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

"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
136 neighbors recently requested a quote
Recommended by75%of homeowners
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Avatar for Terra Insulation
Terra Insulation
4.4(
16
)
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective 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 rate86%
15 neighbors recently requested a quote
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Avatar for Elite Thermal East
Elite Thermal East
4.3(
105
)
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or UpgradeSpray Foam Insulation - Install

Serving Catonsville, MD and surrounding areas

Approved

Super Service Award Winner

In business since 2021

Free estimates

Credit card accepted

"They replaced our insulation while we were redoing the roof."
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 rate94%
86 neighbors recently requested a quote
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Avatar for Atlas Home Energy Solutions
Atlas Home Energy Solutions
4.7(
14
)
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or UpgradeInsulation - Install or Upgrade

Serving Catonsville, MD and surrounding areas

Approved

In business since 2009

Free estimates

Warranties offered

"Ducts were sealed quite dramatically from the graph they provided. I am not seeing much savings on heating as I expected."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+16

Response time3 days
13 neighbors recently requested a quote
Recommended by91%of homeowners
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Avatar for Home Genius Exteriors
Home Genius Exteriors
4.9(
435
)
Batt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or Upgrade

Serving Catonsville, MD and surrounding areas

Approved

In business since 2004

Free estimates

Credit card accepted

"Window & roof insulation quick, easy, & affordable!"
Roofing
Roofing
Roofing
Roofing
Roofing

+77

Recommended by86%of homeowners
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Avatar for Smart Energy Pros
Smart Energy Pros
4.3(
19
)
Blown-In Insulation - Install or Upgrade

Serving Catonsville, MD and surrounding areas

Approved

In business since 2020

Free estimates

Credit card accepted

"Brian was extremely excellent from start to finish! He thoroughly explained all rebates and incentives which made the project extremely affordable. My attic insulation project was seamless! Excellent communication, friendliness, and amazing job cleaning up. I highly, highly, HIGHLY recommend Smart Energy Pros!"
Energy Audit-Insulation
Energy Audit-Insulation
Energy Audit-Insulation
Energy Audit-Insulation
Energy Audit-Insulation

+8

Response time8 hrs
Response rate94%
6 neighbors recently requested a quote
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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

"We had a wonderful experience dealing with Ben Marshall. This father and son team repaired several areas of our aluminum siding and garage roof, replaced our gutters, added a leaf guard and painted the whole exterior of the house. They did a superb and efficient job. We are very pleased with the results."
Response time2 days
Response rate88%
3 neighbors recently requested a quote
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Insulation questions, answered by experts

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?

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?

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?

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?

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.

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