Intent 1:
To limit the probability of:
- for minimum slope requirements, an insufficient slope
of the roof or construction that serves as a roof, which could lead
to inadequate drainage or water pooling, which could lead to:
- water accumulation, which could lead to damage to roofing
material, which could lead to the deterioration of roofing, or
- water ingress at roofing joints, and
- for maximum slope requirements, an excessive slope of
the roof or construction that serves as a roof, which could lead to
damage to roofing membranes from gravity-induced loads, which could
lead to:
- compromised moisture protection, or
- accelerated deterioration.
This is to limit the probability of
the premature failure of roofing, which could lead to precipitation
or meltwater ingress.
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 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 roofs or assemblies protected by roofs, 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.