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9.25.4.3.(1) | Application | Intent |
OH1 | OS2 |
Objective | OS2 Structural Safety |
Attribution | |
Application | Application 1: Coverage to be achieved by vapour
barriers in thermally insulated wall, ceiling and floor assemblies
separating heated space from unheated space, exterior air or exterior soil, in buildings to which Part
9 applies [see Sentence 1.3.3.3.(1) of Division A for application of
Part 9]. |
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Intent | Intent 1: To limit the probability of the inadequate location and
installation of vapour barriers, which could lead to uncontrolled water vapour
diffusion into insulated assemblies. This is to limit
the probability of condensation, which could lead to deterioration, which
could lead to compromised structural integrity of assemblies acting as environmental
separators, which could lead to harm to persons.
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