ARCHIVED - 9.19.2.1.(1)

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9.19.2.1.(1)


Objective	OH1 Indoor Conditions
Attribution	[F82-OH1.1,OH1.2,OH1.3]
Application	Application 1: In buildings to which Part 9 applies [see Sentence 1.3.3.3.(1) of Division A for application of Part 9], access to attic or roof spaces that measure: not less than 3 m² in area, not less than 1 m in length or width, and not less than 600 mm in height over an area not less than 3 m² and not less than 1 m in length or width.
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Intent	Intent 1: To limit the probability that attic or roof spaces will be inaccessible for periodic inspection or maintenance, which could lead to: deficiencies in building components going undetected, or the need to demolish building components in order to gain access. This is to limit the probability of condensation going undetected or the ingress of water. This is to limit the probability of: compromised thermal performance of components intended to provide resistance to heat transfer, which could lead to an inadequate control of the temperature of interior spaces or relative humidity, the generation of pollutants from biological growth or from materials that become unstable on wetting, deterioration, which could lead to compromised integrity of ceilings acting as environmental separators, or water accumulation in interior spaces. 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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