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9.25.2.3.(3)
OH1OS2
ObjectiveOS2 Structural Safety
Attribution
Application
Application 1: 
Installation of thermal insulation in walls, ceilings, roofs and floors separating heated space from unheated space, 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 convective loops of air on the cold face and air on the warm face of thermal insulation, which could lead to the cooling of interior surfaces, which could lead to excessively low temperatures of interior surfaces or within 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 or protected by environmental separators, which could lead to harm to persons.
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