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.