Intent 1:
To limit the probability that the tile substrate
will have an inadequate resistance to water.
This
is to limit the probability of the deterioration of the substrate,
which could lead to:
- where the substrate for the tile contributes to the
required bracing or lateral support for studs, the buckling or racking
of walls, which could lead to structural failure, or
- where the substrate for the tile supports required environmental
separation elements, the excessive deformation, displacement or failure
of such elements, which could lead to further deterioration, which
could lead to further compromised structural integrity.
This is to limit the probability of harm to persons.