9.25.2.4.(1)

Intent 1:

To limit the probability of installing loose-fill insulation in assemblies where the material is subject to:

• excessive settlement or displacement due to gravity and vibration,
• incomplete coverage, or
• moisture damage.

This is to limit the probability of compromised thermal resistance, which could lead to excessively low temperatures of interior surfaces or within assemblies.

This is to limit the probability of condensation, which could lead to:

• an inadequate control of the temperature of interior spaces or relative humidity,
• the generation of pollutants from biological growth or from materials that become unstable on wetting, or
• deterioration, which could lead to compromised integrity of assemblies acting as environmental separators.

This is to limit the probability of:

• negative effects on the air quality of indoor spaces, and
• the inadequate thermal comfort of persons.

This is to limit the probability of harm to persons.

Intent 2:

To facilitate the determination of compliance with this Code where fill levels of loose-fill insulation could be difficult to verify.