Insulation Types
| Type | R-Value/inch | Best For | DIY? |
|---|---|---|---|
| Fiberglass batts | R-3.2 | Walls, attic | Yes |
| Blown fiberglass | R-2.5 | Attic | No |
| Cellulose | R-3.5 | Attic, walls | No |
| Spray foam | R-6.5 | All areas | No |
| Rigid foam | R-5 | Basement, exterior | Yes |
2026 Rebates
Federal: Up to $1,200 tax credit (25C) through 2026 changes
State Programs: HEEHRA rebates available:
- Up to $1,600 for insulation
- Higher amounts for low-income households