Intent 1:
To limit the probability that the performance of
sealant backing will fall significantly below expectations with respect
to
- absorption properties and off-gassing of the sealant
backing material
- resisting permanent deformation
This is to limit the probability of
three-sided adhesion of sealants, which could lead to excessive movement
of the backside of the sealant between substrates, which could lead
to the premature failure of sealant joints, which could lead to:
- precipitation or meltwater ingress, or
- compromised thermal performance of components intended
to provide resistance to heat transfer.
This is to limit the probability of:
- an inadequate control of temperatures 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 exterior walls or elements protected by exterior walls, 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.