9.7.6.1.(2)

Objective

OH1 Indoor Conditions

Attribution

Intent

Intent 1:

To limit the probability that the installation of field-assembled, manufactured or pre-assembled windows, doors, and skylights will fall significantly below expectations.

This is to limit the probability of:

  • premature deterioration of materials and components used for the installation,
  • condensation on the surface of building elements and within assemblies,
  • precipitation into interior space, or
  • leakage of air induced by air pressure difference due to wind loads.

This is to limit the probability of:

  • structural damage due to snow loads on skylights or where windows have sloped or near-horizontal components,
  • the ingress of insects and vermin,
  • excessive force required for operation of windows, doors and skylights, which could lead to inadequate ventilation, where windows are required for non-heating season ventilation
  • the inadequate control of temperatures of interior spaces, drafts, relative humidity, or water accumulation,
  • 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,
  • the inadequate thermal comfort of persons, and
  • contact with moisture.

This is to limit the probability of harm to persons.

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