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9.26.7.2.(1)
OH1OS2
ObjectiveOS2 Structural Safety
Attribution
Application
Application 1: 
Starter strips for asphalt-shingle roofs, on buildings to which Part 9 applies [see Sentence 1.3.3.3.(1) of Division A for application of Part 9].
Exceptions: 
except as stated in Sentence 9.26.7.2.(3), which applies where eave protection of not less than Type M mineral-surfaced roll roofing is provided.
Application 2: 
This also applies to asphalt shingles installed as cladding, as stated in Sentence 9.27.1.1.(4).
Application 3: 
This also applies to starter strips for asphalt shingles on roofs having a slope of less than 1 in 3, as stated in Sentence 9.26.8.2.(1).
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Intent
Intent 1: 
To limit the probability of:
  • water leakage through cutouts between shingle tabs in the bottom course of shingles,
  • insufficient overhang, or
  • buckling of the starter strip.
This is to limit the probability of precipitation or meltwater ingress, which could lead to deterioration, which could lead to the structural failure of roofs or walls or of assemblies protected by roofs or walls, which could lead to harm to persons.
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