Intent 1:
To limit the probability of:
- an inadequate number of fasteners, which could lead
to an inability to resist uplift forces from wind, vibration and gravity,
or
- exposed fasteners, which could lead to the shrinkage
and tearing of shingles over time.
This is to limit the probability of
water penetrating directly to roof decking or sheathing.
This is to limit the probability of:
- roofing detaching and falling, or
- precipitation or meltwater ingress, which could lead
to deterioration, which could lead to the structural failure of roofs
or walls or of assemblies protected by roofs or walls.
This is to limit the probability of harm to persons.