9.3.2.9.(6)

Intent 1:

To limit the probability that performance, with respect to the protection of structural wood elements from termite infestation or decay, will fall significantly below expectations. Where structural wood elements support or are used in an environmental separator, this is to limit the probability of compromised performance of the building envelope, which could lead to:

• condensation,
• precipitation 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 indoor air and surface temperatures, drafts, relative humidity, or water accumulation,
• the generation of pollutants from biological growth or from materials that become unstable upon wetting, or
• deterioration, which could lead to further compromised integrity of environmental separators.

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.

Intent 2:

To limit the application of the standard to situations where the limited protection provided by a boron preservative will be adequate.