Intent 1:
To limit the probability that the performance of
windows, doors and skylights will fall significantly below expectations
with respect to:
- resistance to wind and snow loads,
- control of air leakage,
- protection against precipitation ingress,
- resistance to the ingress of insects and vermin, and
- ease of operation.
This is to limit the probability of:
- structural insufficiency of windows, doors and skylights,
- excessive air leakage, which could lead to excessive
heat transfer or condensation,
- the ingress of water,
- the ingress of insects and vermin, or
- inoperability or excessive difficulty in operating openable
windows, doors and skylights.
This is to limit the probability of:
- the inadequate control of temperatures of interior spaces,
relative humidity, drafts, 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 exterior wall assemblies.
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.