How much does it cost to insulate or reinsulate an attic?

• <div><p>On average, insulating an attic costs about $2,500, with a typical range of $1,500 to $3,500. The final price often depends on the attic's size, with costs generally falling between $1 to $3 per square foot. For example, insulating a 1,800-square-foot attic would likely cost between $1,800 and $5,400.</p><p>If the project involves removing old insulation, this can add an average of $900 to the total cost, bringing a full removal and reinsulation project to around $3,000.</p><p>Several factors influence the overall cost:</p><ul><li><p><b>Insulation Type:</b> Prices per square foot vary significantly by material.</p></li><li><p>Reflective: $0.50–$1.50</p></li><li><p>Blown-in: $1–$4</p></li><li><p>Batt: $2–$4</p></li><li><p>Loose-fill: $2–$5</p></li><li><p>Spray foam: $2–$5</p></li><li><p>Structural insulated panels (SIPs): $4–$7</p></li><li><p><b>Project Complexity:</b> Factors like sealing air leaks, poor attic accessibility, and required inspections can add to the cost.</p></li><li><p><b>Removal Issues:</b> The discovery of mold, asbestos, or pests during the removal of old insulation can substantially increase the price.</p></li></ul></div>

Should you insulate under a concrete slab?

• <div><p>Insulating under a concrete slab foundation is a great way to improve the energy efficiency of your home, but it isn't necessary for outdoor projects like driveways, patios, sidewalks, and walkways. If you’re pouring in cold weather, insulating under the slab can help prevent heat loss from the concrete, aiding in proper curing. Along with accelerants, this can be a good way to ensure strong concrete despite pouring in the cold. </p></div>

Get matched with top insulation pros in Siren, WI

Q: Does the type of garage door affect the insulation?

• <div><p>The level of insulation is determined by both the material and the thickness of the door. Some garage door materials (such as wood) have natural insulating capabilities, while other materials (such as metal) do not. No matter the material, two-layer and three-layer garage doors have a higher R-value than single-layer garage doors, as insulation is fitted between the panels. </p></div>

Q: Are glass garage doors insulated?

• <div><p>One of the biggest disadvantages of glass garage doors is that they are not the best at insulating your garage. In the summer, heat can enter through the glass, while in the winter, heat can escape through the glass, increasing your electricity and gas bills as you crank up your HVAC unit. You can help mitigate the poorer insulation by investing in insulated glass and insulating your garage.</p></div>

Q: Can I use spray foam to insulate air ducts?

• <div><p>Spray foam insulation doesn&rsquo;t do well around heat sources. Therefore, You can use spray foam insulation to seal around HVAC boots that penetrate through the drywalls or around where wrapped ducts connect to the boots, but we don&rsquo;t recommend using spray foam insulation to encapsulate your air ducts. Spray foam insulation on air ducts is also less effective compared to duct wraps.</p></div>

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Verified Reviews for Insulation Service pros in Siren, WI

*The Angi rating for Insulation Service companies in Siren, WI 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 Siren, WI 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 September 19, 2025

Reviewed in September 2025
On time and budget. Went above and beyond what was expected.
JT Tree Service
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Reviewed in July 2024
Jeff came up to understand what the project and was extremely helpful in helping us decide what the layout should be. He made suggestions and has a great eye for the details. Despite our lack of planning he fit in our project. He and his team worked seamlessly. You can tell they take pride...
Divine Designs General Contracting
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Reviewed in March 2024
This company was very professional and came back to make sure everything was perfect and tidyâ d up. They were efficient and had the project complete in one day. Highly recommend!
MN Pavers LLC
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Reviewed in December 2023
Jon was great!! He fixed out roof turbine and made sure everything was leak proof so we didn't have any problems this winter. I would recommend using him for anything you need done. Great experience.
Northwoods Custom Builders
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Reviewed in March 2023
Eagle siding does a GREAT job! Buck and the rest of the crew replaced my roof and numerous family and friend's roofs after a large hailstorm in 2022. Buck showed up when they said they would at a fair price.
Eagle Siding, Inc.
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Reviewed in October 2022
Buck and all his crew at Eagle siding are the BEST!!!!! They replaced my roof. The work they did was clean and neat and on time. Kept me up to date every step of the process. I have sent numerous friends and realtives to Eagle siding. They all had the same great service I had on my work. I will...
Eagle Siding Inc
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Reviewed in July 2022
Came right over and gave me a bid. Have not done the roof yet. I'm very sure it will be top notch.
Dead Eye Construction, LLC
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Reviewed in July 2022
I am in WI and the work needed to be done at condo we were selling. Since I went with them for restore of water damage, I contacted Joni again. She fit us into their schedule to get it done before the condo sold. Once again they were wonderful, and per our neighbor in AZ, work was fast, and...
JEFFREY'S
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Reviewed in May 2022
Sean is great at providing solutions. We had holes in the sheetrock and Sean was able to repair them so we don't even know they were there. This was about 1,500 square feet of walls that Sean worked on over two days. Sean also helped rip out and dispose of carpet and prepare and paint...
All 4 Him Abatement & Construction Services, LLC
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Reviewed in March 2022
He did a very quality job, it looks brand new and seal coat properly, and the products used was very durable.
Seal-Coat Specialties
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Find Insulation pros in Siren

Serving Siren, WI and surrounding areas

In business since 1974

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"we had a large double window two windows one opening replaced they did a a good job made that room much warmer in winter which is what we were after it is now the warmest room in the house in the winter which is good as it is the room we spend most our time in. will defiantly be having them out to price gutters when we are ready in the spring."

+19

Recommended by93%of homeowners

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American Home Shield – Home Warranty

3.5(

5,688

)

Serving Siren, WI 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."

Recommended by65%of homeowners

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Hip & Ridge Construction

4.5(

)

Serving Siren, WI and surrounding areas

In business since 2011

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Credit card accepted

"The windows our great! Energy saving due to the insulated glass saves money and never fogs or has condensation on the windows. The durability and ease of cleaning and opening these windows are a dream! Along with the aesthetics.
The crew that came to install the windows did awesome work fast cleaned up there work area things were in great shape when leaving. Since then I have had follow up calls and follow visits to make sure everything is working as I believe it should be which it is. Great company!! Would have them do any work for me and my family and would have them do anyone else's work too. Do not let this company slip by without a try!"

Recommended by100%of homeowners

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Hampton Enterprise LLC

3.7(

)

Serving Siren, WI and surrounding areas

In business since 1989

Free estimates

Emergency services offered

Our mission at Hampton Enterprise LLC is to provide clients with superior customer service, quality work and speedy service in all aspects of their home improvement needs. Licensed, insured and trusted since 1989; come discover the Hampton difference today!\n\nWe specialize in the installation and repair of Windows, Doors, Flooring, Sinks, Bathtubs, Showers, Sprinkler Systems and much more. We also offer Interior and Exterior Home Painting, Custom Welding Fabrication and Carpentry.Localy in your area just call and i will call back with a local number thank you . from James Hampton\n\nAL.Dothan 334-648-3817,\nAL Birmingham 334-648-3817,\nAL Huntsville 334-648-3817,\nAL Mobile 334-648-3817,\nAL Tuscaloosa 334-648-3817,\nAL Montgomery 334-578-4761,\nAR Little Rock 334-648-3817,\nAZ Phoenix 334-648-3817,\nCA LosAngeles/Sacramento 334-648-3817,\nCO Denver/Colorado Springs 334-648-3817,\nCT Hartford 334-648-3817,\nDE Dover 334-648-3817,\nFL Tallahassee 334-648-3817,\nFL Cape Canaveral/ Cocoa 334-648-3817,\nFL. Destin 334-648-3817,\nFL Gainsville 334-648-3817\nFl Jacksonville 334-648-3817,\nFL Orlando 334-648-3817,\nFL Panama City 334-648-3817,\nFL Tampa 334-648-3817,\nFL Miami 334-648-3817,\nGA Atlanta 334-648-3817,\nGA Albany 334-648-3817,\nGA Augusta 334-648-3817,\nGA Columbus 334-648-3817,\nGA Macon 334-648-3817,\nGA Valdosta 334-648-3817,\nIA Des Moines 334-648-3817,\nID Boise 334-648-3817,\nIL Chicago/Springfield 334-648-3817,\nIN Indianapolis 334-648-3817,\nKS Levenworth/Topeka 334-648-3817,\nKY Frankfort 334-648-3817,\nLA New orleans/Baton Rouge 334-648-3817,\nMA Boston 334-648-3817,\nMD Annapolis 334-648-3817,\nME Augusta 334-648-3817,\nMI Detroit/Lansing 334-648-3817,\nMN Saint Paul 334-648-3817,\nMO kansas City/Jefferson City 334-648-3817,\nMS Jackson 334-648-3817,\nMS Biloxi 334-648-3817,\nMS Gulf Port 334-648-3817,\nMT helena 334-648-3817,\nNC Raleigh 334-648-3817,\nND Bismark 334-648-3817,\nNE Lincoln 334-648-3817, \nNJ Trenton 334-648-3817,\nNM Santa Fe 334-648-3817,\nNV Carson City 334-648-3817,\nNV Las Vegas 334-648-3817\nNY Albany 334-648-3817,\nOH Columbus 334-648-3817,\nOK Oklahoma Ciy 334-648-3817,\nOR Salem 334-648-3817,\nPA harrisburg 334-648-3817,\nRI Providence 334-648-3817,\nSC Columbia 334-648-3817,\nSD Pierre 334-648-3817,\nTN nashville 334-648-3817,\nTX Austin 334-648-3817,\nUT Salt Lake City 334-648-3817,\nVA Richmond 334-648-3817,\nVT montpelier 334-648-3817,\nWI Madison 334-648-3817,\nWV Charleston 334-648-3817,\nWY Cheyenne 334-648-3817

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Insulation questions, answered by experts

The level of insulation is determined by both the material and the thickness of the door. Some garage door materials (such as wood) have natural insulating capabilities, while other materials (such as metal) do not. No matter the material, two-layer and three-layer garage doors have a higher R-value than single-layer garage doors, as insulation is fitted between the panels.

One of the biggest disadvantages of glass garage doors is that they are not the best at insulating your garage. In the summer, heat can enter through the glass, while in the winter, heat can escape through the glass, increasing your electricity and gas bills as you crank up your HVAC unit. You can help mitigate the poorer insulation by investing in insulated glass and insulating your garage.

Spray foam insulation doesn’t do well around heat sources. Therefore, You can use spray foam insulation to seal around HVAC boots that penetrate through the drywalls or around where wrapped ducts connect to the boots, but we don’t recommend using spray foam insulation to encapsulate your air ducts. Spray foam insulation on air ducts is also less effective compared to duct wraps.

On average, insulating an attic costs about $2,500, with a typical range of $1,500 to $3,500. The final price often depends on the attic's size, with costs generally falling between $1 to $3 per square foot. For example, insulating a 1,800-square-foot attic would likely cost between $1,800 and $5,400.

If the project involves removing old insulation, this can add an average of $900 to the total cost, bringing a full removal and reinsulation project to around $3,000.

Several factors influence the overall cost:

Insulation Type: Prices per square foot vary significantly by material.
Reflective: $0.50–$1.50
Blown-in: $1–$4
Batt: $2–$4
Loose-fill: $2–$5
Spray foam: $2–$5
Structural insulated panels (SIPs): $4–$7
Project Complexity: Factors like sealing air leaks, poor attic accessibility, and required inspections can add to the cost.
Removal Issues: The discovery of mold, asbestos, or pests during the removal of old insulation can substantially increase the price.

Insulating under a concrete slab foundation is a great way to improve the energy efficiency of your home, but it isn't necessary for outdoor projects like driveways, patios, sidewalks, and walkways. If you’re pouring in cold weather, insulating under the slab can help prevent heat loss from the concrete, aiding in proper curing. Along with accelerants, this can be a good way to ensure strong concrete despite pouring in the cold.

The Siren, WI 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

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•
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How Much Does Insulation Installation Cost? [2026 Data]
New insulation can make your home more comfortable and boost energy efficiency. Use this insulation cost guide to get an accurate estimate for the installation.
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•
May 22, 2026May 22, 2026
Protect Your Foundation With the Right Exterior Insulation
Exterior foundation insulation can retain structural durability and save energy. Discover the best insulation material for your foundation to get the most out of it.
Lydia Schapiro
•
May 22, 2026May 22, 2026
7 Things to Know Before Installing Home Insulation
Home insulation has many benefits: it’s energy-efficient, environmentally friendly, and cost-effective. It’s worthwhile but requires planning. We’ve laid out the key things to know before installing home insulation.
Xiao Faria daCunha
•
Apr 9, 2026Apr 9, 2026
Non Fiberglass Insulation: Top Alternatives
Learn about non fiberglass insulation alternatives, including cellulose, soy, wool, blown-in, spray foam, cotton insulations, radiant barriers, and new materials.