LocalProjectBudget

Insulation Cost in 2026

Most Insulation projects in the United States cost between $1,400 and $6,000. The typical price is $2,900.

What drives the price

  • Batt, blown-in cellulose or closed-cell spray foam
  • Target R-value for your climate zone
  • Attic, wall or crawlspace access
  • Air sealing done alongside the insulation

Usually included

  • Insulation material to the specified R-value
  • Installation and air sealing at obvious gaps
  • Cleanup and disposal

Usually extra

  • Removing contaminated existing insulation
  • Ventilation or moisture remediation
  • Drywall work for wall injection

Unit prices in the United States

Quality tierCost per sq ft
Budget$1.20
Mid-range$2.40
High-end$5.00

Insulation by project type

Insulation costs in major metros

Browse by state