9.25.2.5.(1)

Objective

OH1 Indoor Conditions

Attribution

Intent

Intent 1:

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.

Top of Page