Intent 1:
To limit the probability that the performance of
materials and components and their installation will fall significantly
below expectations, with respect to:
- their resistance to:
- condensation,
- excessive heat transfer,
- precipitation ingress,
- the ingress of moisture from the ground,
- the ingress of water from the surface, or
- air infiltration and exfiltration, or
- the emission of gases from improperly constituted or
applied material (CAN/ULC-S705.2).
This is to limit the probability of:
- 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,
- deterioration, which could lead to further compromised
integrity of environmental separators, or
- pollutant ingress, including soil gas, combustion products
from parking garages, or particulates.
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.