Intent 1:
To limit the probability of:
- installing flashing with inadequate water resistance,
and
- the premature failure of flashing materials on exposure
to moisture, sunlight, temperature extremes or mechanical stresses.
This is to limit the probability of
inadequate protection for exterior walls, which could lead to:
- precipitation or meltwater ingress, and
- an inadequate dissipation of precipitation or meltwater
to the exterior.
This is to limit the probability of:
- compromised thermal performance of components intended
to provide resistance to heat transfer, which could lead to 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, or
- deterioration, which could lead to compromised integrity
of exterior walls or elements protected by exterior walls.
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.