9.19.2.1.(1)

Objective

OH1 Indoor Conditions

Attribution

Intent

Intent 1:

To limit the probability that attic or roof spaces will be inaccessible for periodic inspection or maintenance, which could lead to:

  • deficiencies in building components going undetected, or
  • the need to demolish building components in order to gain access.

This is to limit the probability of condensation going undetected or the ingress of water.

This is to limit the probability of:

  • compromised thermal performance of components intended to provide resistance to heat transfer, 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,
  • deterioration, which could lead to compromised integrity of ceilings acting as environmental separators, or
  • water accumulation in interior spaces.

This is to limit the probability of:

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

This is to limit the probability of harm to persons.

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