Intent 1:
To limit the probability of inadequate resistance
to thermal conduction, which could lead to excessive cooling of the
interior surfaces of metal frames and adjacent air, which could lead
to condensation.
This is to limit the probability
of:
- the generation of pollutants from biological growth
or from materials that become unstable on wetting, or
- deterioration, which could lead to compromised integrity
or performance of windows, doors or skylights, or of building components
protected by such components.
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.