Intent 1:
To limit the probability that the airtightness of
other fenestration assemblies will be inadequate for the control of:
- heat loss or gain due to air mass transfer,
- air infiltration and exfiltration,
- airborne vapour transfer,
- precipitation ingress due to air pressure differences,
or
- condensation.
This is to limit the probability of:
- excessive air leakage, which could lead to excessive
heat transfer, condensation or precipitation ingress,
- pollutant ingress, or
- water accumulation.
This is to limit the probability of:
- the inadequate control of temperatures of interior spaces,
drafts, indoor relative humidity,
- the generation of pollutants from biological growth,
or from materials that become unstable on wetting, or
- deterioration, which could lead to compromised integrity
of the separator.
This is to limit the probability of:
- negative effects on the air quality of indoor spaces,
- the inadequate thermal comfort of persons, or
- contact with moisture.
This is to limit the probability of harm to persons.