ATTRIBUTION:
Functional Statement:
F51
To maintain appropriate air and surface
temperatures.
F62
To facilitate the dissipation of water and
moisture from the building.
F51
To maintain appropriate air and surface
temperatures.
Objective:
OH1.1, OH1.2, OH1.3
INTENT:
To limit the probability of an inadequate vent area for
roofs, which could lead to:
- condensation,
- the accumulation of moisture, or
- the formation of ice dams.
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,
- deterioration, which could lead to compromised integrity of
ceilings acting as environmental separators, or
- water accumulation in interior spaces.
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.