Back5.3.1.2.(1)

ATTRIBUTION:

Functional Statement:

F51

To maintain appropriate air and surface temperatures.

F63

To limit moisture condensation.

F51

To maintain appropriate air and surface temperatures.

Objective:

OH1.1, OH1.2

 

APPLICATION:

Properties of materials and components installed to provide:
  • the required resistance to heat transfer, or
  • the means to dissipate heat.
This applies to building materials, components, assemblies and their interfaces described in Sentence 5.1.2.1.(1) that are installed in buildings to which Part 5 applies [see Sentence 1.3.3.2.(1) of Division A for application of Part 5].
This also applies to the position of low air and vapour permeance materials within the building assembly relative to the position of materials providing thermal resistance in the assemblies of buildings to which Part 9 applies [see Sentence 1.3.3.3.(1) of Division A for application of Part 9], where the building assembly:
  • incorporates low permeance materials that act as other than cladding or that are installed on the warm side of the assembly, and
  • is more susceptible to condensation [see Sentences 9.25.1.2.(4) and (5) for combinations of interior and exterior environmental conditions that create a higher risk for condensation].

INTENT:

To limit the probability of the inadequate control of heat transfer through environmental separators under expected environmental loads, which could lead to:
  • excessive heat loss or gain, or
  • condensation.
This is to limit the probability of:
  • the inadequate control of temperatures of interior spaces,
  • the generation of pollutants from biological growth or from materials that become unstable on wetting, or
  • deterioration, which could lead to compromised integrity of environmental separators.
This is to limit the probability of:
  • negative effects on the air quality of indoor spaces, and
  • the inadequate thermal comfort of persons.
This is to limit the probability of harm to persons.

ATTRIBUTION:

Functional Statement:

F51

To maintain appropriate air and surface temperatures.

F63

To limit moisture condensation.

Objective:

OS2.3

 

APPLICATION:

Properties of materials and components installed to provide:
  • the required resistance to heat transfer, or
  • the means to dissipate heat.
This applies to building materials, components, assemblies and their interfaces described in Sentence 5.1.2.1.(1) that are installed in buildings to which Part 5 applies [see Sentence 1.3.3.2.(1) of Division A for application of Part 5].
This also applies to the position of low air and vapour permeance materials within the building assembly relative to the position of materials providing thermal resistance in the assemblies of buildings to which Part 9 applies [see Sentence 1.3.3.3.(1) of Division A for application of Part 9], where the building assembly:
  • incorporates low permeance materials that act as other than cladding or that are installed on the warm side of the assembly, and
  • is more susceptible to condensation [see Sentences 9.25.1.2.(4) and (5) for combinations of interior and exterior environmental conditions that create a higher risk for condensation].

INTENT:

To limit the probability of the inadequate control of heat transfer through environmental separators under expected environmental loads, which could lead to:
  • excessive heat loss or gain,
  • condensation within components or assemblies, or
  • the creation of ice dams on sloped roofs.
This is to limit the probability of rot, corrosion and damage due to freeze-thaw cycling, which could lead to compromised structural integrity, which could lead to structural failure, which could lead to harm to persons.

ATTRIBUTION:

Functional Statement:

F51

To maintain appropriate air and surface temperatures.

F63

To limit moisture condensation.

Objective:

OS1.4

 

APPLICATION:

Properties of materials and components installed to provide:
  • the required resistance to heat transfer, or
  • the means to dissipate heat.
This applies to building materials, components, assemblies and their interfaces described in Sentence 5.1.2.1.(1) that are installed in buildings to which Part 5 applies [see Sentence 1.3.3.2.(1) of Division A for application of Part 5].
This also applies to the position of low air and vapour permeance materials within the building assembly relative to the position of materials providing thermal resistance in the assemblies of buildings to which Part 9 applies [see Sentence 1.3.3.3.(1) of Division A for application of Part 9], where the building assembly:
  • incorporates low permeance materials that act as other than cladding or that are installed on the warm side of the assembly, and
  • is more susceptible to condensation [see Sentences 9.25.1.2.(4) and (5) for combinations of interior and exterior environmental conditions that create a higher risk for condensation].

INTENT:

To limit the probability of the inadequate control of heat transfer through environmental separators under expected environmental loads, which could lead to:
  • excessive heat loss or gain, or
  • condensation within components or assemblies.
Where required life safety systems are incorporated in environmental separators, this is to limit the probability that temperature-sensitive or moisture-sensitive life safety systems will freeze, which could lead to compromised operation of such systems, which could lead to harm to persons.

ATTRIBUTION:

Functional Statement:

F30

To minimize the risk of injury to persons as a result of tripping, slipping, falling, contact, drowning or collision.

Objective:

OS3.1

 

APPLICATION:

Properties of materials and components installed to provide:
  • the required resistance to heat transfer, or
  • the means to dissipate heat.
This applies to building materials, components, assemblies and their interfaces described in Sentence 5.1.2.1.(1) that are installed in buildings to which Part 5 applies [see Sentence 1.3.3.2.(1) of Division A for application of Part 5].
This also applies to the position of low air and vapour permeance materials within the building assembly relative to the position of materials providing thermal resistance in the assemblies of buildings to which Part 9 applies [see Sentence 1.3.3.3.(1) of Division A for application of Part 9], where the building assembly:
  • incorporates low permeance materials that act as other than cladding or that are installed on the warm side of the assembly, and
  • is more susceptible to condensation [see Sentences 9.25.1.2.(4) and (5) for combinations of interior and exterior environmental conditions that create a higher risk for condensation].

INTENT:

To limit the probability of the inadequate control of heat transfer through environmental separators under expected environmental loads, which could lead to the creation of ice dams on sloped roofs, which could lead to ice falling from such roofs, which could lead to harm to persons.