Back9.25.2.5.(1)

ATTRIBUTION:

Functional Statement:

F51

To maintain appropriate air and surface temperatures.

F41

To minimize the risk of generation of contaminants.

F63

To limit moisture condensation.

F51

To maintain appropriate air and surface temperatures.

F63

To limit moisture condensation.

Objective:

OH1.1, OH1.2

 

APPLICATION:

Installation of spray-applied polyurethane insulation in walls, ceilings, roofs and floors separating heated space from unheated space, the exterior air or the exterior soil, in buildings to which Part 9 applies [see Sentence 1.3.3.3.(1) of Division A for application of Part 9].

INTENT:

To limit the probability that the installation of spray-applied polyurethane will fall significantly below expectations with regard to:
  • spray equipment and operating parameters,
  • chemicals or storage conditions,
  • application procedures (including climatic conditions),
  • physical properties (such as density, cohesion and adhesion), and
  • substrate type, condition and preparation.
This is to limit the probability of:
  • improperly constituted or applied polyurethane insulation, which could lead to the emission of gases, or
  • inadequate thermal resistance, which could lead to excessively low temperatures of interior surfaces or within assemblies.
This is to limit the probability of condensation, 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, or
  • deterioration, which could lead to compromised integrity of assemblies acting as 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:

F63

To limit moisture condensation.

Objective:

OS2.3

 

APPLICATION:

Installation of spray-applied polyurethane insulation in walls, ceilings, roofs and floors separating heated space from unheated space, the exterior air or the exterior soil, in buildings to which Part 9 applies [see Sentence 1.3.3.3.(1) of Division A for application of Part 9].

INTENT:

To limit the probability that the installation of spray-applied polyurethane will fall significantly below expectations with regard to:
  • spray equipment and operating parameters,
  • chemicals or storage conditions,
  • application procedures (including climatic conditions),
  • physical properties (such as density, cohesion and adhesion), and
  • substrate type, condition and preparation.
This is to limit the probability of inadequate thermal resistance, which could lead to excessively low temperatures of interior surfaces or within assemblies.
This is to limit the probability of condensation, which could lead to deterioration, which could lead to compromised structural integrity of assemblies acting as environmental separators, which could lead to harm to persons.