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9.25.4.2.(5) | Application | Intent |
OS2 | OH1 |
Objective | OH1 Indoor Conditions |
Attribution | |
Application | Application 1: Membrane-type vapour barriers,
other than polyethylene, 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 membrane-type
vapour barriers, other than polyethylene, 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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