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>

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Last update on March 22, 2026

Reviewed in March 2026
Isaac and his crew were very professional. Any questions I had were answered promptly. They were very efficient and paid great detail to every aspect of the project. I had them prep for a pad for my home, some drainage work and also installed my mound system. Very satisfied with the quality of...
Isaacs Excavating and Construction
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Reviewed in May 2025
The Village of Orleans is extremely pleased with the exceptional kitchen renovations completed by M&R at the Orleans Municipal Building. From start to finish they demonstrated outstanding professionalism, attention to detail, and craftsmanship. The scope of the project included installing...
M&R Maintenance and Repair LLC
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Reviewed in June 2024
Travis completed ground work that included leveling the back yard and putting In two stone walls. Travis also build a deck on the back of my house and installed a sliding glass door. Travis works long hours to complete projects. .
Martin Excavation
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Reviewed in January 2022
Super! I have been putting in Select Blinds through our house since we moved in a couple of years ago. as we have worked on sections. Some rooms had nothing, others had old foreign-made blinds. Directions for measuring were great, emails communicated through the process, delivery was always...
SelectBlinds.com
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Reviewed in February 2021
Roger did a very nice job installing our antenna. He was very knowledgeable and had much better equipment than I was able to get on my own. I am amazed at all of the channels we can get.
Roger's Antenna Service
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Reviewed in July 2020
Outstanding experience, from day one to completion. I have never experienced previously this level of customer service, from initial discussions, planning, signing the contract to installation, and paperwork. I am not exaggerating when I say that every single person at the company delivered a...
Lumina Solar, Inc.
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Reviewed in May 2014
Installed a metal roof by subs, worked too fast and messy, then had two more workers to finish the trim. Installed pretty good in front of the house but when they got around back where we were not watching them, they totally screwed up. My husband had to fix everything they did. Left a mess in...
Doug Hodge
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Reviewed in May 2014
Fast and reliable. I've gone from having two old (probably original) electrical boxes with old and incorrectly matched breakers to a new 40 circuit 200-amp panel with several open spaces for additional circuits. Installation was very clean and professional. 
J And S Electrical
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Reviewed in November 2013
It went very well. Jason was punctual and efficient. This installation was for the final section. All Seasons had completed most of the house for us previously, and did the same fine job then. Gutters and downspouts look nice, are easy to clean and are doing the job and holding up well after 3...
All Seasons Seamless Gutters
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Reviewed in November 2013
I was impressed that I was able to speak to someone, Jesse Ingals, who could come out immediately that day to look at the placement, measure the area and give me a quote right there and then. In our conversation, he gave me a lot of detail about the product and the process they would use to...
Round Hill Fence & Security Inc
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Doorbell Installation questions, answered by experts

Open-cell foam insulation has a life span ranging between 15 to 25 years when well cared for. However, the material may degrade sooner in areas with high humidity or after prolonged water exposure. Proper installation and maintenance can maximize its longevity but requires close monitoring. Closed-cell foam insulation has a longer life span of 30 to 50 years.

Ensures uniform application and maximizes insulation effectiveness and energy savings.

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.

Vapor barriers in attics are a bit outdated and most areas no longer recommend them for attic spaces. For vented attics, the best method is usually to install drywall and cover it with latex paint before attaching insulation fiberglass, cellulose, or foam insulation. When renovating an attic to use as a living space, a contractor can guide you on the best way to cover insulation.

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.

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