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9.28.1.3.(1)
ApplicationIntent
OH1OS2OS1OS3OP1
ObjectiveOH1 Indoor Conditions
Attribution
[F80-OH1.1,OH1.2,OH1.3]
Application
Application 1: 
Stucco finish applied over concrete masonry units, on 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:
  • stresses on stucco due to shrinkage of the masonry substrate during curing, or
  • the inadequate bonding of stucco due to the excessively high moisture content of masonry.
This is to limit the probability of the delamination or cracking of stucco, which could lead to:
  • precipitation or meltwater ingress, or
  • compromised thermal performance of components intended to provide resistance to heat transfer.
This is to limit the probability of:
  • an inadequate control of temperatures of interior spaces or relative humidity,
  • the generation of pollutants from biological growth or from materials that become unstable on wetting, or
  • deterioration, which could lead to compromised integrity of exterior walls or elements protected by exterior walls.
This is to limit the probability of:
  • negative effects on the air quality of indoor spaces,
  • the inadequate thermal comfort of persons, and
  • contact with moisture.
This is to limit the probability of harm to persons.
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