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.
F63
To limit moisture condensation.
Objective:
OH1.1, OH1.2, OH1.3, OH1.1, OH1.2
INTENT:
To limit the probability of:
- [Clause (a)] inadequate attic or roof space ventilation, and
- [Clause (b)] inadequate thermal resistance.
This is to limit the probability of:
- condensation, which could lead to the accumulation of moisture,
- the formation of ice dams, which could lead to the ingress of
melted water,
- compromised thermal performance of components intended to provide
resistance to heat transfer, or
- excessively low temperatures of interior surfaces or within
assemblies.
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
assemblies acting as environmental separators.
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.