Cost To Install Attic Insulation – Attic insulation costs anywhere from $1 to $4 per square foot installed, depending on type, R-value, job size and complexity. The average cost to insulate an attic is $1,000 to $2,700. Small attic insulation costs start at $500, while large attic insulation costs up to $6,000.
Blow-in insulation costs from $0.90 to $2.40 per square foot or from $900 to $3,600 in total, depending on the size of the attic, the R-value, and the amount of air dam and sealing required. Blow-in attic insulation is ideal for most attics because it effectively fills gaps and irregularly shaped areas.
Cost To Install Attic Insulation
Attic spray foam insulation costs from $1.00 to $4.50 per square foot or from $0.60 to $2.90 per board foot, depending on the type, R-value and size of the job. Attic spray foam insulation costs an average of $1,100 to $6,800 for the floor and $1,500 to $9,000 for the rafters and roof deck.
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Attic and laminate insulation costs from $0.80 to $2.60 per square foot installed, or an average of $1,100 to $3,900. Completely replacing attic tiles can cost up to $4.70 per square foot to achieve the recommended R-value.
Structural insulated panels (SIPs) cost $4 to $12 per square foot for material alone, depending on thickness. SIPs are large panels – from 4′ x 8′ to 8′ x 24′ – used primarily in new construction, but sometimes installed in the rafters when converting an attic to a conditioned space.
Free-fill attic insulation costs $1.00 to $2.50 per square foot installed. Free-fill insulation is the same material as blown-in, but the labor cost is slightly higher to install.
Reflective insulation costs from $0.50 to $2.20 per square foot installed. Reflective insulation is a radiant barrier attached to a thin thermal layer that provides an R-value of R-3 to R-21 when combined with dead air space during installation.
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Reflective insulation is best when paired with other types of insulation to increase the R-value and block all forms of heat transfer.
Attic insulation replacement costs $2 to $6 per square foot, including $1 to $2 per square foot to remove the old insulation. Cost factors include:
Attic insulation removal costs $1 to $2 per square foot, depending on quantity and type. Remove old insulation if it has fire, water, or pest damage, or if the material is hazardous. Removing the insulation also exposes the area to seal all intrusions.
Attic insulation prices range from $0.30 to $12 per square foot. The Department of Energy recommends R-30 to R-60, depending on the climate zone. Combining a thin layer of spray foam with blown or wadding insulation reduces the cost of air sealing and achieves the desired R-value.
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Adding more attic insulation costs $1 to $4 per square foot with professional installation, depending on existing insulation, type and desired R-value. Adding 5 inches of loose insulation costs $200 to $650 to cover 1,000 square feet.
Do not compress insulation layers when adding or installing insulation. Compression reduces air pockets and lowers the R-value of the material.
Installing attic insulation is DIY friendly when you add insulation, either blown or filled. Hire a certified professional to install spray foam insulation because it requires mixing hazardous chemicals.
Adding attic insulation saves between 10% and 20% on heating and cooling costs, depending on your climate and existing insulation. By improving your home’s energy efficiency, attic insulation typically pays for itself in 3 to 5 years with lower energy bills.
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Spray foam insulation is the best for the attic in terms of performance, but it is the most expensive. Fiberglass batts and blown cellulose are the most common in bridges, but are less effective.
Energy Star recommends insulation at R-38 or 10 to 14 inches thick in most attics. Colder climates require R-49 to R-60.
Insufficient insulation leads to higher energy costs and reduced indoor comfort. Over-insulation results in a poor return on investment and can affect attic ventilation, increasing humidity and mold potential.
We track millions of estimates that homeowners get from contractors and share those prices with you. We respect strict editorial integrity.
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Radiant Barrier Cost Insulation Cost Spray Foam Insulation Cost Crawl Space Insulation Cost Garage Insulation Cost Batt & Roll Insulation Cost Blown Insulation Cost Cost of Post or Metal Building Insulation Expert Advice from Bob Vila, the Most Trusted Name in home improvement, home remodeling, home repair and DIY. Tried, true, trusted home advice
How much does it cost to install insulation? Does your home need new insulation? Insulation costs range from $1,400 to $6,300, with the national average being $2,900.
If you’re dealing with a drafty home, high energy bills, attic moisture, uneven temperatures from room to room, and a constantly running HVAC system, your home may need new insulation. According to HomeAdvisor, cost options for home insulation range from $1,400 to $6,300, with the national average for blow-in insulation at $2,900. Blow-in insulation costs less than batt insulation, radiant barrier, and fiberglass. The most expensive option is spray foam insulation, but it has the highest return on investment (ROI).
The cost of insulation is measured per board foot, which is 1 square foot by 1 inch thick. Expect to pay $0.25 to $2 per inch of thickness per square foot (a board foot), or $1 to $5 per square foot. The return on investment on insulation is 100% or more and is considered one of the best investments homeowners can make in their home. Insulation warms a home in the winter and cools it in the summer by slowing the transfer of heat through the walls, floor and ceiling. Each inch of insulation provides an R-value between 3 and 8. The R-value measures how well a material insulates; the higher the R-value, the better the insulation.
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The labor cost to install insulation averages $0.25 to $0.50 per square foot. The total labor cost depends on the type of insulation installed. Batting insulation can be a quick installation process, while spray foam takes more time and preparation.
Calculating insulation costs depends on several factors. Prices may differ from the national average due to insulation type, project size, living area, labor, equipment, site preparation and cleanup prices.
There are many different types of insulation and they all differ in cost, advantages and uses. An insulation professional has the experience and knowledge to advise you on what kind of insulation will work best in a home, as some types will work better in certain areas. Some of the more common types of insulation are spray foam (open-cell foam and closed-cell foam), blanket insulation that includes pans and rolls, loose or blown fill, rigid foam board, and structural insulated panels (SIP).
Insulation costs depend on the total area of the project. The area per board foot and required R-value, as well as project preparation and cleanup costs, will determine the overall price of the insulation installation. Prices can range from $0.25 to $2 per inch of thickness per square foot (one board foot) or from $1 to $5 per square foot.
Proper Attic Insulation
Where the insulation needs to be installed also affects the overall costs of the insulation. For energy efficiency, a house must be insulated from top to bottom. Here are some areas of a home that need insulation, the most common type of insulation for that location, and average prices.
Labor costs for installing insulation typically range from $0.25 to $0.50 per square foot. This price may differ from the national average depending on the type of material used and how large the area to be insulated is. Some types of insulation require specific equipment to install. Spray foam, for example, requires special equipment to install because it comes out as a liquid and turns into dense foam. Spray foam will cost more due to the equipment and protective gear required for the project.
Site preparation and cleanup will also be a significant part of the total project cost. Preparation includes any necessary repairs to walls, attic, basement or access space. If there is water damage or evidence of mold or mildew, a home may require mold remediation services before a contractor can begin installing insulation. Costs for site preparation will be based on the extent of repairs and types of materials required. Cleanup costs include removal of old insulation and other materials.
When budgeting for insulation costs, there will be additional price factors and considerations beyond the basics. These include insulation removal, insulation replacement and home air sealing.
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If the insulation specialist needs to remove the old insulation, there may be an additional removal and disposal fee. On average, removing existing insulation costs between $1 and $1.50 per square foot, not including removal fees. Removing fiberglass insulation is less expensive than removing blown-in attic insulation, as the latter requires special machinery or a high vacuum for removal.
Most insulation eventually loses its R-value and will need replacement. Insulation replacement costs $2 to $7 per square foot for fiberglass and most blown-in insulation. Keep in mind that spray foam insulation cannot be completely removed, and rigid foam boards are usually the easiest to remove. Once the old insulation is removed, a professional will seal and patch the area and backfill it with new insulation.
It is important to reduce air circulation in a home to maintain energy efficiency. Air sealing techniques such as air barriers will help prevent leaks inside and outside the home. Constructed air barriers
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