Intent 1:
To limit the probability of an inadequate substrate,
which could lead to discontinuity in the waterproofing, which could
lead to:
- the ingress of moisture from the ground, not under hydrostatic
pressure, or
- compromised thermal performance of components intended
to provide resistance to heat transfer.
This is to limit the probability of:
- an inadequate control of the temperature of interior
spaces, relative humidity, or water ingress and 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 walls or of elements protected by 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 waterproofing materials are installed to control
the infiltration of soil gas, to limit the probability of an inadequate
substrate, which could lead to discontinuity in the waterproofing,
which could lead to 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.