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9.26.5.1.(2)
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Application
Application 1: 
Eave protection for shingle, shake or tile roofs, on buildings to which Part 9 applies [see Sentence 1.3.3.3.(1) of Division A for application of Part 9]:
  • over unheated garages, carports and porches,
  • where the roof overhang exceeds 900 mm measured along the roof slope from the edge of the roof to the inner face of the exterior wall,
  • on roofs of asphalt shingles installed in accordance with Subsection 9.26.8.,
  • on roofs with slopes of 1 in 1.5 or greater, or
  • in regions with 3 500 or fewer degree-days.
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Intent
Intent 1: 
To exempt constructions from the application of Sentence 9.26.5.1.(1), which would otherwise require eave protection, where:
  • the probability of ice-dam formation is low,
  • the vulnerable area is beyond the point likely to be reached by ponded water,
  • asphalt shingles are installed in a manner that reduces the roof's vulnerability to ice-dam-related leakage, or
  • the roof slope is sufficiently steep to facilitate speedy drainage and minimize the likelihood of ponding.
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