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Top-Rated Insulation pros in Alpha - Updated Nov 2026

Avatar for CSI Insulation
CSI Insulation
New to Angi
Batt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or UpgradeSpray Foam Insulation - Install+1 more

Serving Alpha, IL and surrounding areas

Approved

In business since 2004

Free estimates

Offers commercial services

We take great pride our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction, from the start to the completion of a project. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

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7 neighbors recently requested a quote
Avatar for Home Comfort, Inc.
Home Comfort, Inc.
4.9(
157
)
Batt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or UpgradeInjection Insulation - Install+1 more

Serving Alpha, IL and surrounding areas

In business since 1948

Emergency services offered

Credit card accepted

"Very established company with dedicated, respectful, courtesy employees. One of their products is blown-in insulation. We had them insulate our attic, foundation, and a crawl space under a room which gets cold during winter months. Our home is a large L-Shaped Ranch. It has made a difference in heating of our home. We had them take the old insulation out of the attic, which they vacuumed into bag and hauled away. Home Comfort also offers repair of driveways, where cracks have either sunken or raised the concrete. They repaired the few spots in my driveway, making it where someone won't trip on the crack and fall. I definitely recommend Home Comfort Insulation."
Response time11 hrs
Response rate94%
Recommended by87%of homeowners
Avatar for Home Comfort Keepers, LLC
Home Comfort Keepers, LLC
4.9(
12
)
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or Upgrade

Serving Alpha, IL and surrounding areas

In business since 2020

Free estimates

Credit card accepted

"We had siding, windows, and insulation installed at a fair price. Brandon and his crew were very professional, personable, and did excellent work. They responded quickly to all of our requests. We would highly recommend Home Comfort Keepers. Don & Eileen Emerson"
Response time12 hrs
Response rate85%
12 neighbors recently requested a quote
Avatar for QC FIRST CLASS CONSTRUCTION LLC
QC FIRST CLASS CONSTRUCTION LLC
5.0(
10
)
Blown-In Insulation - Install or Upgrade

Serving Alpha, IL and surrounding areas

In business since 2022

Free estimates

Credit card accepted

QC FIRST CLASS CONSTRUCTION LLC proudly serves its customers with pride, integrity and attention to the details that matter most to you. This is one of the many things that sets us apart from the rest. We are locally owned and operated. Give us a call today! \n

Response time2 days
Response rate85%
Avatar for Preferred Home Improvements
Preferred Home Improvements
4.7(
12
)
Batt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or UpgradeInjection Insulation - Install+2 more

Serving Alpha, IL and surrounding areas

In business since 2010

Free estimates

Emergency services offered

We here at Preferred Home Improvements take pride in our work! Customer service and satisfaction is our number one goal! The Services we offer are : Air Duct Cleaning Dryer vent cleaning Attic Insulation Crawl space clean ups We also offer other home services! We do full viedo inspections of duct work we also will do a whole walk through and explain everything step by step. We also offer before and after pictures! We have been in business over 6 years and are here to stay. We promise you will have a Awsome experience with us. We also offer yearly warranties and free estimates! Our service area is within 150 miles of the Quad Cites!

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+30

Recommended by100%of homeowners
Cronkhite Home Solutions
3.2(
169
)
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or Upgrade

Serving Alpha, IL and surrounding areas

In business since 2011

Free estimates

Credit card accepted

"We had them come out to give me a price on adding more insulation to 2 sides of our house. And to put new guttering on the 2nd floor . While here they talked us into insulating the attic too. We agreed the attic would be a good job for the guys to do in the winter. We signed papers and gave them a $2500.00 dollar check for the down payment . The salesman Josh said he be in touch with us the next week to see when they could do it. Josh had come out on sat October 7th. Well I tried to send photos of our house to Josh 2 times . So after a week & half I called the office. And ask did he work there?She said yes she would have him call . But no call . So I called office and she gave me there email and I sent pictures to her. I had.questions on the photos, and asked them to call . Ii called in again to see if anything was being done, and secretary said the boss said they were working on a schedule and someone would call me. At this point we are 3 weeks out from our signing and cant get a call from anyone. We are at this point not happy, and figure our $2500.00 is gone. So my daughter called to see if there was a process to get our money back. And I got my 1st. Phone call . 1 day from being 4 weeks of signing. And this guy as nice as he was said we probably won't get it back because we signed a contract. . I have delt with other companies , and any time I sign a contract ( that big ) some always calls to go over it , or to ask if you have questions. But now I don't want them, I'm just going to get someone else .if I can get my money back. If they can't return my calls, why should I think there going to do what I want them to do?.?"
 Medium Grey Double Four Traditional Lap Siding
 Eco Fiberglass Insulation
 This deck has a diagonal design
 Before
 Before

+55

Response time1 day
132 neighbors recently requested a quote
Recommended by80%of homeowners
Avatar for American Home Shield – Home Warranty
American Home Shield – Home Warranty
3.5(
5,689
)
Batt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or UpgradeInjection Insulation - Install+2 more

Serving Alpha, IL and surrounding areas

In business since 1971

Credit card accepted

"Roberto was the technician and he was very professional, polite, and personable. He inspected the rest of our system and told us things that needed to be changed or repaired. He showed me pictures of everything. Everything he told me about was accurate. He quoted me a price for R38 insulation , Some of our ducts were plastic and he recommended them to be changed. I agreed completely and didn't know they were plastic. I would have had them done the work but I had no price comparisons to make and besides I didn't have the money right then. So he just finished the vent cleaning and left his card. He did a great job on the vent cleaning and was happy with the work."
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+2

Recommended by65%of homeowners
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Insulation FAQs, answered by experts

You can insulate an existing garage door. But while it’s a cost-effective option upfront, it may not perform as well as a garage door that comes with insulation. If you live in a colder climate—or if you plan on working in your garage and need a new door—you should purchase one with existing insulation for better efficiency. 

Yes, covering exposed wires is necessary for several important reasons. Exposed electrical wires pose significant risks, such as electrical shocks, fires, short circuits, and potential damage to your home’s electrical system. By properly insulating and protecting the wires, you can minimize the potential for accidents, prevent electrical fires, and ensure your electrical system stays intact. 

Insulating a detached garage won't reduce your home's heating or cooling bills—and insulating an attached garage will only have a small effect on your home's energy efficiency. However, insulating an attached garage can reduce the transfer of heating and cooling to and from the outdoors, which can reduce the amount of energy your home needs to stay comfortable. Also, having an insulated garage is just more pleasant. Balance the cost of insulating your garage with how you'll use the space to determine if the project is worth it.

In some areas, insulation companies require a special license, while some states only require them to hold general contractor licenses. Some municipalities may not mandate any license, although you should always ensure a contractor is fully insured. You can use Angi’s license lookup tool to confirm whether or not an insulation contractor you’re considering holds the necessary license for your area. You can also contact the company for information regarding licenses, certifications, and insurance.

Upgrading insulation offers several benefits, including improved energy efficiency, which leads to lower heating and cooling costs. It also enhances indoor comfort by regulating temperature and can provide noise reduction. Additionally, better insulation has a reduced environmental impact and can increase your home's value and overall livability.

The Alpha, IL homeowners’ guide to insulation services

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