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9.25.4.2.(4) | Application | Intent |
OS2 | OH1 |
Objective | OH1 Indoor Conditions |
Attribution | |
Application | Application 1: Minimum resistance to heat and ultraviolet deterioration
of polyethylene vapour barriers in thermally
insulated wall, ceiling and floor assemblies separating heated space from
unheated space, exterior air or 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 that the performance of polyethylene
installed to provide a high resistance to vapour movement will fall significantly
below expectations with respect to:
This is to limit the probability of uncontrolled
water vapour diffusion into insulated assemblies, which could lead to:
This is to limit the probability of:
This is to limit the probability of:
This is to limit the probability of harm to persons.
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