Intent 1:
To limit the probability of:
- warping or buckling on exposure to water, or
- water penetrating the edges of panels, which could lead
to swelling or deterioration of adhesive.
This is to limit the probability of:
- edge joints becoming misaligned or pulling away from
trim and flashing,
- insufficient strength to resist impact forces or wind
action, or
- where panel-type siding is installed as bracing to satisfy Subclause 9.23.13.1.(2)(a)(i) and Clause 9.23.13.6.(1)(a), an inability
to resist lateral loads, which could lead to racking of exterior walls.
This is to limit the probability of the displacement of
cladding, trim and flashing, opening of joints or failure of caulking,
which could lead to:
- precipitation or meltwater ingress, which could lead
to deterioration, which could lead to the structural failure of exterior
walls or elements protected by exterior walls, or
- falling cladding components.
This is to limit the probability of harm to persons.