9.26.4.2.(1)

Objective

OS2 Structural Safety

Attribution

Intent

Intent 1:

To limit the probability of the premature failure of flashing materials on exposure to moisture, sunlight, temperature extremes or mechanical stresses, which could lead to precipitation or meltwater ingress, which could lead to deterioration, which could lead to the structural failure of roofs or assemblies protected by roofs, which could lead to harm to persons.

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