HESP Weatherization

Attic Insulation

  • Attic must be air sealed prior to or as part of insulating the attic
  • Attic must be insulated to one of the following levels:
    1. Open attic insulated to at least R49
    2. Enclosed cavities filled to capacity with dense-pack insulation
    3. A minimum of 5” of high density spray foam on all attic surfaces
    4. High density spray foam was applied to within 1.5” of the surface of cavities that were subsequently enclosed
  • Batt insulation not eligible for rebates
  • Upgrade must be followed by a Building Performance Institute (BPI) energy assessment
  • Code-approved fire protection must be added to foam insulation when applicable.
  • Cost of insulating the attic must be at least $1,000 more than the rebate amount