INTENT:
To limit the probability of:
- the deterioration of building components going undetected, which
could lead to
- condensation and the accumulation of moisture, or
- the formation of ice dams, or
- the need to demolish building components in order to gain access.
This is to limit the probability of:
- the ingress of water, 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
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
ceilings acting as environmental separators.
This is to limit the probability of:
- negative effects on the air quality of indoor spaces, and
- the inadequate thermal comfort of persons.
This is to limit the probability of harm to persons.