System: Insulation and Ventilation

American Institute of Inspectors Standards of Practice


13.1 The inspector SHALL observe and report on:

  • Insulation in unfinished attic and foundation areas.
  • Ventilation of attic and foundation areas.
  • Kitchen, bath, and laundry venting systems and whether the vents terminate at the exterior of the dwelling.
  • The presence of any attic ventilation fan.
  • The presence or absence (only) of storm doors or thermal windows.
  • Evidence of visible condensation and other consequences of inadequate ventilation.

13.2 The inspector SHALL identify:

  • Insulation in unfinished attics and estimated quantity.
  • Insulation in under-floor crawl spaces and estimated quantity.
  • The absence or presence of insulation in unfinished spaces next to heated living areas.

13.3 The inspector is NOT required to:

  • Report on insulation and vapor retarders concealed in ceilings or exterior walls.
  • Report on venting equipment and fans that are integral with household appliances.
  • Report on the thermal efficiency ratings or concealed ventilation systems.
  • Disturb insulation or vapor retarders.
  • Determine indoor air quality.

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