Intent 1:
To limit the probability that:
- heat or flames from a flue pipe will contact unprotected
chimney masonry, which could lead to the ignition of combustible building
components, or
- rainwater will flow across the chimney cap and into
the flue, which could lead to damage to the liner due to freeze-thaw
stresses.
This is to limit the probability of
the escape of heat or flames, which could lead to the ignition of
combustible building components, which could lead to harm to persons.