Blown Insulation Cost: Cost to Blow Insulation

Blown insulation cost ranges from $1,180 to $4,490 depending on the size of your attic and the R-value you want to achieve. The cost to blow insulation in attic ranges from $1.20 to $1.50 per square foot. To get a more accurate cost for your blown insulation project, request a quote.

Blown Insulation Cost

By HomeBlue Team

Updated September 03, 2021 08:57 AM

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How Much Does Blown Insulation Cost?

This guide is intended to provide you an approximate cost to blow insulation in your area. To get a quote for your specific project, Click Here for a Free Estimate. Our research, which includes feedback provided from local blown insulation contractors, resulted in the following blown insulation cost estimates.

Blown insulation cost:

Blown insulation cost ranges from $1,180 to $4,490 depending on the size of your attic and the R-value you want to achieve. For example, the R-value of blown insulation ranges from 2.2 to 4.3 per inch depending on whether it is rock wool, cellulose, or fiberglass. Ten inches of blown fiberglass insulation will achieve an R-value of 22 to 43. Ten inches of rock wool insulation will achieve an R-value of 31 to 34. Ten inches of cellulose insulation will achieve an R-value of 32 to 37. Five inches of each material will achieve half the R-value.

Cost to blow insulation in attic based on the size of your attic:

Cost to blow insulation in attic (1,000-sf attic) ranges from $1,180 to $1,500.
Cost to blow insulation in attic (1,500-sf attic) ranges from $1,770 to $2,250.
Cost to blow insulation in attic (2,000-sf attic) ranges from $2,350 to $3,000.
Cost to blow insulation in attic (2,500-sf attic) ranges from $2,940 to $3,740.
Cost to blow insulation in attic (3,000-sf attic) ranges from $3,530 to $4,490.

Cost of blown in insulation per square foot:

Cost of blown in insulation per square foot ranges from $1.20 to $1.50 depending on the size of your attic and the materials you select.

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Factors that Influence Blown Insulation Cost

When blow in insulation companies come to your house to provide you an estimate, they will consider a number of factors that can increase or decrease the cost of your project. Blown insulation prices will vary depending the size of your attic and the materials you select. Here are a few things to keep in mind:

Your prices may be higher when:

You use cellulose insulation.
You have multiple attic spaces.
The attic space is difficult to access.
You want to achieve a high R-value (more inches of insulation).
Existing insulation requires removal.

Your prices may be lower when:

You use fiberglass insulation.
You have a standard size attic.
Your attic is easy to access (or has standing room).
There is no existing insulation that requires removal.

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How Much Does Blown Insulation Cost Near Me?

Blown insulation prices vary from area to area. We have developed a number of blow in wall insulation cost guides to help you identify the cost to blow insulation in attic and walls.