Intent 1:
To limit the probability of the ingress of moisture
from the ground, not under hydrostatic pressure.
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,
- water accumulation or an inadequate control of 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 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
Intent 2:
Where dampproofing materials are installed to control
the infiltration of soil gas, to limit the probability of the infiltration
of soil gas, which could lead to negative effects on the air quality
of indoor spaces, which could lead to harm to persons.