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How Much Does Blown-In Insulation Cost?

$1 - $3
cost per square foot installed
$800 - $3,700
average total cost for attic
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Blown-in insulation is a popular choice for both new and existing homes because of its versatility and efficiency. It is applied by blowing small pieces of insulation material into spaces between walls, attics, or floors, using specialized equipment. This guide provides a detailed overview of the costs associated with blown-in insulation, including factors that affect the price, and different types for various home areas.

Key Takeaways

  • Cost Per Square Foot: Blown-in insulation costs typically range from $1.00 to $2.80 per square foot installed.
  • Attic Insulation Cost: The average total cost to insulate an attic with blown-in material can vary between $900 to $3,600.
  • Material Choices: Options include fiberglass, cellulose, and rockwool, each with different price points and insulating capabilities.
  • Cost Factors: Installation costs can be influenced by the type of insulation, the area to be insulated, and the home’s existing conditions.
  • DIY Potential: While professional installation is recommended, there are options for renting equipment and attempting DIY installation to save on labor costs.

Detailed Cost Analysis

Blown-in insulation is a cost-effective method to improve a home’s energy efficiency. Here are detailed insights into the costs associated with this insulation type.

Blown-In Insulation Cost by Location

The following table provides a breakdown of costs by specific locations in a home:

LocationAverage Cost
Attic Floor$900 – $3,600
Exterior Walls$1,900 – $7,800
2-Car Garage$1,400 – $4,600
Garage Walls$950 – $3,200
Garage Attic Floor$520 – $1,400
Entire House (New Construction)$3,500 – $11,600
Entire House (Existing Construction)$4,500 – $16,000

Blown-In Insulation Cost Per Square Foot

Square FeetAverage Cost to Install
100$100 – $280
300$300 – $840
500$500 – $1,400
700$700 – $2,000
1,000$1,000 – $2,800

Average Cost of Blown-In Insulation

The national average cost is around $1,900, with most homeowners spending between $800 and $3,000 for a standard installation. The minimum and maximum costs can vary significantly based on the size and specific needs of the project.

Specific Costs by Insulation Type

Blown-in insulation comes in three main types: fiberglass, cellulose, and rockwool. Each type has different costs and features that may be suitable for different areas of a home.

Fiberglass Insulation

  • Material Cost per Square Foot: $0.30 – $1.10
  • Installed Cost per Square Foot: $1.00 – $2.80
  • Features: Budget-friendly, non-flammable, low dust during installation

Cellulose Insulation

  • Material Cost per Square Foot: $0.30 – $1.80
  • Installed Cost per Square Foot: $1.20 – $2.80
  • Features: Eco-friendly, higher R-value per inch, may settle after installation

Rockwool Insulation

  • Material Cost per Square Foot: $1.20 – $2.50
  • Installed Cost per Square Foot: $1.90 – $4.20
  • Features: Superior sound dampening, high R-value, not widely available

Installation and Labor Costs

Professional installation is highly recommended for blown-in insulation to ensure it is evenly distributed and effective. Labor costs can vary depending on the complexity of the installation and the area’s accessibility. Generally, labor can constitute 20% to 30% of the total project cost.

DIY Blown-In Insulation

For those considering a DIY approach, insulation blowing machines can often be rented from local home improvement stores. This can significantly reduce the cost, especially in labor, but proper safety measures and techniques must be adhered to.

Comparing Blown-In Insulation with Other Types

Blown-in insulation is often compared to batt and spray foam options. Here’s a quick cost comparison:

Insulation TypeAverage Cost per Square Foot Installed
Blown-in$1 – $3
Batt$1 – $3
Spray Foam$1 – $5

Blown-In Insulation Cost

Investing in blown-in insulation can lead to significant energy savings and improve the comfort of your home. Whether upgrading an old house or insulating a new one, understanding the costs involved can help you make an informed decision. For further guidance, consult our comprehensive blown-in insulation cost guide.

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