9.26.9.5.(1)

Objective

OH1 Indoor Conditions

Attribution

Intent

Intent 1:

To limit the probability of:

  • if not enough fasteners were used, the displacement of shingles under wind-uplift and gravity loads,
  • if too many fasteners were used, the splitting of shingles under loads imposed by the shrinkage of shingles, or
  • if fasteners were exposed to water, corrosion, which could lead to a reduction in the fasteners' ability to resist expected loads, which could lead to the displacement of shingles.

This is to limit the probability of:

  • water penetrating directly to roof decking or sheathing, or
  • compromised thermal performance of components intended to provide resistance to heat transfer.

This is to limit the probability of:

  • an inadequate control of relative humidity, temperatures of interior spaces 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 roofs or assemblies protected by roofs.

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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