OH1 Indoor Conditions

To limit the probability of inadequate venting, which could lead to:

- condensation,
- the accumulation of moisture, or
- the formation of ice dams.

This is to limit the probability of:

- the ingress of water into attic or roof assemblies, or
- compromised thermal performance of components intended to provide resistance to heat transfer.

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,
- 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.