Intent 1:
To limit the probability of openings in environmental
separators, which could lead to:
- the ingress of precipitation,
- the ingress of insects or vermin,
- excessive heat transfer,
- compromised thermal performance of components intended
to provide resistance to heat transfer,
- condensation,
- the accumulation of moisture or the ingress of water
backed up by ice dams,
- drafts, or
- the ingress of pollutants from adjacent attic or roof
spaces.
This is to limit the probability of
deterioration, which could lead to compromised structural integrity
of building components, which could lead to harm to persons.