certified company
Based on 54 reviews
Our Certification Process
Best Pick Guarantee
Verified License(s)
Verified General Liability Ins.
Verified Workers' Comp
1st year as a Best Pick Call
"Insulation is a simple, fast, and cost-effective way to improve your home's energy performance and increase your comfort. We have been helping homeowners in the area since 1970, and we would love to help you. If your house was built recently, it might not need insulation, but many older homes do, and we can help."

Matt Helminiak | Branch Manager
Company Information
Services Offered
USI Carroll Insulation installs batt, blown-in, and spray foam insulation for residential and commercial customers. The company also performs air sealing.
The company offers a one-year warranty on materials and installation.
Company History
Founded in 1970, USI Carroll Insulation is a local branch of United Subcontractors Incorporated (USI), a national company with 46 locations in 16 states.
Employee Information
Employees drive marked vehicles and undergo background checks and drug testing.
Additional Information
USI Carroll Insulation offers products by Knauf, Roxul, and Covestro.
MHIC #105040
Areas Served
Montgomery, Howard, Anne Arundel, Prince George's
A selection of 54 homeowner reviews:
“Everything was great. I'd give USI an A++ all the way down the board. When you call them to get an estimate, they're prompt, and I can't get anyone to do that. I already recommended them to many people, and I'm going to use them again.”
“They were great. They were here when they said they would be, which was awesome. I don't get that very often. They did good work. We're happy. I'd give them an A+, definitely.”
“USI Carroll Insulation arrived on time, they worked really hard, they got a whole lot of work done, and they did the job perfectly in the expected amount of time. They did a fabulous job. I'd give them an A+.”
“They were great. I'd give them an A+, and I recommend them to everybody who has insulation needs. I've dealt with other insulation companies, and USI is by far the best I've dealt with.”
“They were great. They re-insulated my attic after a fire. They did a great job. They were in and out, they were clean, neat, and they did a good job. The guy knew what he was doing and measured it up quick. Everything was quick, great. I would grade it A+. They were the best. I would recommend them.”
“We had a problem when we needed some more insulation near our bathroom at one end of the house. We didn't know exactly where, so the most impressive thing was that they identified where the problem area was. They put the insulation in and we haven't had a problem since, so it's been great. I'd give them A+. I was very happy with everything they did.”
“The cleanup was excellent and they were quick. They get an A from me.”
“They blew insulation in my attic. I set it up, so I give them an A for that. My mom was here when they did the work, and she talked highly of them, so I'll give them an A for everything.”
“It was a positive experience. I didn't have any complaints about their work. I would say it was excellent work with no complaints and I'm likely to recommend them.”
“They put insulation in the attic. My husband dealt with them. I really didn't deal with them, but they came on time, did a good job, and didn't make a mess. My husband was pleased. I would say the highest grade. I would definitely recommend them.”