9.25.2.4.(5)

Objective

OH1 Indoor Conditions

Attribution

Intent

Intent 1:

To limit the probability of:

  • inadequate thermal resistance, which could lead to excessively low temperatures of interior surfaces or within assemblies, which could lead to condensation, or
  • the transfer of absorbed moisture into the masonry, which could lead to deterioration due to freeze-thaw stresses.

This is to limit the probability of:

  • 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
  • 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 modify the application of Sentence (1) to include masonry cavity walls.

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