9.27.7.2.(1)

Objective

OH1 Indoor Conditions

Attribution

Intent

Intent 1:

To limit the probability of:

  • splitting or cupping of shingles or shakes that are too wide, or
  • exposed joints or defects in underlying courses at joints between excessively narrow shingles or shakes.

This is to limit the probability of:

  • precipitation or meltwater ingress, or
  • compromised thermal performance of components intended to provide resistance to heat transfer.

This is to limit the probability of:

  • an inadequate control of temperatures 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 exterior walls or elements protected by exterior walls, 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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