How much does blown-in insulation cost?
Blown-in insulation runs $800 for a basic cellulose top-up, $1,900 for a typical R-49 install with baffles and air sealing, and $4,500+ for fiberglass or full removal-and-replace jobs.
Quick price points (2026)
| Tier | Cost | Unit |
|---|---|---|
| Low | $800 | whole attic |
| Typical | $1,900 | whole attic |
| High | $4,500 | whole attic |