Cost to Install Blown-In Attic Insulation

September 2026260

Blow-In Attic Insulation Calculator
Item   
Qty
Lower
Higher
Blown-In Insulation
534 square feet
$1,490.73
$3,487.63
Non-discounted retail pricing for popular: Fire retardant, treated cellulose. Class 1A. Loose fill. Calculated purchase quantity includes overage for typical waste and small future repairs.
Blow-In Attic Insulation Labor, Basic
534 square feetsquare feet
$1,490.73
$3,487.63
Basic minimum labor to install blown-in attic insulation with favorable site conditions. Install insulation rafter vent baffling at all soffit vent locations. Blow in and level insulation to R45 insulation level above ceiling crawl space. Includes planning, equipment and material acquisition, area preparation and protection, setup and cleanup. Any additional work is NOT included in cost estimate.
Blow-In Attic Insulation Job Supplies
534 square feet
$1,490.73
$3,487.63
Cost of related materials and supplies typically required to install blown-in attic insulation including: fasteners, vent flow baffles and sealing tape.
Blow-In Attic Insulation Equipment Allowance
534 square feet
$1,490.73
$3,487.63
Job related costs of specialty equipment used for project quality and efficiency, including: 115 V insulation blowing system, 500+ pounds of insulation/hour capacity. Daily rental.
Option: Remove Insulation
534 square feet
$1,490.73
$3,487.63
Transfer existing loose fill insulation into container and dispose of responsibly off premise. For up to 1 foot thick layer of fiberglass, wool and cellulose insulation only. Additional precautions, steps and costs for asbestos insulation are NOT included. Material cost includes dump fee.
Blown-In Insulation Job Debris Disposal
0.496125
0.564375
Costs to load, haul away and dispose of old materials, installation waste and associated debris.
Unused Minimum Labor
Balance of 2 hr(s) minimum labor charge that can be applied to other tasks.
Totals - Cost To Install Blown-In Attic Insulation
$0
$0
Average Cost per Square Foot
$0.00
$0.00

In September 2026 the estimated national average cost to Install Blown-In Attic Insulation starts at $3.90 - $8.11 per square foot*. Use our Cost Calculator for cost estimate examples customized to the location, size and options of your project.

To estimate costs for your project:

1. Set Project Zip Code Enter the Zip Code for the location where labor is hired and materials purchased.

2. Specify Project Size and Options Enter the number of "square feet" required for the project.

3. Re-calculate Click the "Update" button.

4. Review See "Notes and General Information" for assumptions and appropriate use.


NOTE: *Input the total of the finished surface area AND the area of any openings enclosed by the finished area.


Cost to Install Blown-In Attic Insulation - Notes and General Information

This example estimate is for BASIC mid-range work performed in readily serviceable conditions by professionals proficient in all work mentioned above, using popular, IN STOCK products, materials and supplies available at home improvement retailers. Your actual costs will vary due to the unique conditions, requirements, labor options and material choices of your project. Work not mentioned on this page, work with schedule difficulty, work during periods of local labor shortages, and work using high-demand pros or master craftsman, premium materials, custom built products, project supervision may result in HIGHER COSTS!

This example estimate is for educational and illustrative purposes - it is NOT a substitute for written quotes from trade professionals. Homewyse strongly recommends that you contact reputable professionals for itemized assessments of work required and costs for your project - before making any decisions or commitments.

The example estimate includes:

  • Costs for local material / equipment delivery to and service provider transportation to and from the job site.
  • Costs to prepare the worksite for Blow-In Attic Insulation, including costs to protect existing structure(s), finishes, materials and components.
  • Labor setup time and mobilization time typical of local, small Blow-In Attic Insulation jobs.

The example estimate does NOT include:

  • Costs for any work or materials not specifically mentioned on this page.
  • Costs for removing, relocating, repairing, or modifying existing framing, surface finishes (including molding) and fixtures, HVAC, electrical, and plumbing systems - or bringing any systems into compliance with current building codes.
  • Costs for testing and remediation of hazardous materials (asbestos, lead, radon, etc.).
  • General contractor overhead and markup for organizing and supervising the Blow-In Attic Insulation. Add 13% to 22% to the total cost above if a general contractor will supervise this project.
  • Sales tax on materials and supplies.
  • Permit or inspection fees (or portion thereof) required by your local building department for your overall project.

References - Blow-In Attic Insulation