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

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

Should I remove old attic insulation before adding new?

• <div>Ideally, you can add new insulation to your existing insulation. However, some circumstances require you to remove old insulation before adding any new insulation: <ul><li>If the insulation is over 15 years old</li><li>If the insulation is wet or moldy</li><li>If it is <a href="https://www.angi.com/articles/what-is-vermiculite-insulation.htm">vermiculite insulation</a></li><li>If you see signs of pest infestation</li></ul>Removing old insulation is best left to a pro who can safely dispose of potential moldy or asbestos-ridden insulation.</div>

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Last update on November 22, 2025

Reviewed in November 2025
Amazing customer service. Prompt and friendly. Efficiently completed work and apprised me of all changes that needed done
The Honey Do Crew
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Reviewed in January 2024
They have completed several projects of drainage tile installation, road repair and septic tank installation. All projects were completed on schedule and an excellent manner.
HeartLand Dirt Works, Inc.
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Reviewed in November 2020
Installation went smoothly. Workers were very professional and efficient.
Jim Bollinger & Son LLC
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Reviewed in January 2020
Hired this outfit in 2018. 14K worth of work.Started out ok but as soon as we left the state for 6 months they figured since we weren't there to keep an eye on everything they would do it as quick and crappy as possible. Where to start? When they put the kitchen cabinets in they put a screw from...
Nygard Construction Llc
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Reviewed in October 2019
I would have liked to see an itemized list of charges before final charge, it would be good to see final appearance of all the items chosen together as in a computer picture. I had only one choice of contractors but wanted the job done asap so I proceeded with Bath Fitter. Mike the installer...
Bath Fitter
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Reviewed in May 2019
K B Contracting found defects in my roof the prior roofing company had missed. His skill set and eye for detail was exemplary. Brandon went out of his way and took his time to make sure the roof was installed correctly. He did not charge me extra for it.
K B Contracting
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Reviewed in October 2015
kyle did a wonderful job installing the metal roof on my house was very courteous and did the job in a timely manner
Semo Fence and Home Improvement
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Reviewed in September 2013
A. Identified problem and ELECTRONIC parts needed for repair. B. Called, got part prices, relayed information. C. Will get and install parts at my authorization. (Also saw the same precipitating...
BEAUFORD'S APPLIANCE SVC
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Reviewed in November 2012
Our furnace broke down the day before my husband was to have major surgery. We were going to be in hospital for about 5 days. I called Aire Solutions and they came out that afternoon to check it out. We were able to make arrangements to purchase a New furnace that day. We were given detailed...
Aire Solutions
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Reviewed in December 2009
Everett came on time, installed an upgraded humidifier at a much lower price than others I talked too. Price and work was as quoted. Looking over his work, he did a good job and used top of the line parts.
Jones Air And Water
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Doorbell Installation questions, answered by experts

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.

Ideally, you can add new insulation to your existing insulation. However, some circumstances require you to remove old insulation before adding any new insulation:

If the insulation is over 15 years old
If the insulation is wet or moldy
If it is vermiculite insulation
If you see signs of pest infestation

Removing old insulation is best left to a pro who can safely dispose of potential moldy or asbestos-ridden insulation.

Acoustic foam, fiberglass insulation, soundproof curtains, and specialized drywall are effective in reducing noise transmission.

DIY insulation installation is feasible, particularly for basic rolls or batts, if you have the right protective gear and knowledge. However, hiring a professional ensures even, full coverage for maximum efficiency.

Depending on where you live and the conditions of your basement, you may not need to insulate your basement. Your best bet is to talk to a basement remodeling company to find out what they recommend doing.

Insulating your basement can help improve your home's energy efficiency, but it will also increase the cost of your basement remodel project. The average cost of installing basement insulation is $2,400.

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