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4.2

(151 reviews)

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Verified Reviews for Insulation Service pros in Baltimore, MD

*The Angi rating for Insulation Service companies in Baltimore, 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 Baltimore, 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 Baltimore

Avatar for Koala Insulation of The Greater Baltimore Area
Koala Insulation of The Greater Baltimore Area
4.8(
13
)

Serving Baltimore, 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
)

Serving Baltimore, 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 Mister Insulation LLC
Mister Insulation LLC
5.0(
8
)

Serving Baltimore, MD and surrounding areas

Approved

Super Service Award Winner

In business since 2000

Free estimates

Emergency services offered

"We called Mister Insulation and Jeff came out in a day or so. We explained that we purchased new windows and doors and had insulation blowen into the walls but the house was still not warm. He took pictures in the attic and used a thermal camera to show where we were losing heat also we had mold. He removed the mold and replaced the insulation . He and his crew were very professional. We would recommend them ."
Energy Evaluation
EnergyStar Seal
Building Code
NASA Tech!
Solar Venitilation

+1

Response time7 hrs
Response rate88%
8 neighbors recently requested a quote
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Avatar for RetroFoam of Philadelphia
RetroFoam of Philadelphia
5.0(
22
)

Serving Baltimore, 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
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Avatar for Atlas Home Energy Solutions
Atlas Home Energy Solutions
4.7(
14
)

Serving Baltimore, 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
14 neighbors recently requested a quote
Recommended by91%of homeowners
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Avatar for ROI Construction LLC
ROI Construction LLC
4.3(
16
)

Serving Baltimore, 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!"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+19

41 neighbors recently requested a quote
Recommended by100%of homeowners
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Avatar for Smart Energy Pros
Smart Energy Pros
4.3(
19
)

Serving Baltimore, 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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Insulation questions, answered by experts

Upgrading insulation service in Baltimore homes, especially with proper attic insulation and air sealing, can make your property stand out in the city’s competitive market. Buyers appreciate energy-efficient features, particularly in historic neighborhoods with older housing stock. Enhanced insulation not only improves comfort but also demonstrates proactive maintenance, which can boost resale appeal and help your home sell more quickly.

Helpful?

In Baltimore, homeowners often overlook air sealing before adding attic insulation, which can lead to persistent drafts. Failing to address moisture in basements or crawl spaces—common in local row homes—can result in mold. Using insulation with the wrong R-value for our climate or disturbing old plaster and brickwork are also frequent issues. Careful planning and attention to these local factors help ensure lasting results.

Helpful?

Combining insulation service with upgrades like attic insulation, air sealing, or HVAC improvements in Baltimore can be especially effective for row homes and older brick houses. Coordinating these projects often reduces labor disruptions and helps address common local issues like drafts and humidity. You’ll also be better positioned to qualify for regional energy efficiency incentives, making the most of your investment while minimizing project timelines.

Helpful?

Be cautious if a contractor in Baltimore skips a thorough inspection of your attic insulation or avoids discussing air sealing, which are crucial for local homes. Watch for vague contracts, unusually high or low quotes, or requests for large upfront payments. Professionals should address common Baltimore issues like moisture and provide local references. Clear communication and knowledge of the city’s housing types are essential.

Helpful?

Baltimore’s humid summers and older housing mean insulation needs regular checks. Inspect attic insulation and air sealing every six months for signs of moisture, pest activity, or settling—especially after heavy rain or snow. Pay close attention to basements and crawl spaces, as these areas are prone to dampness. Addressing issues early helps maintain energy efficiency and protects against long-term damage.

Helpful?

The Baltimore, 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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