Sentence 9.20.13.9.(2)

Intent 1:

To limit the probability of inadequate drainage, which could lead to water penetrating the interior surface of solid masonry walls, flowing along the interface of the sheathing membrane material and the interior surface of the masonry, and collecting in the wall.

This is to limit the probability of:

• the deterioration of masonry due to freeze-thaw stresses, which could lead to masonry falling, or
• the deterioration of elements inboard of the masonry, which could lead to compromised structural integrity, which could lead to structural collapse.

This is to limit the probability of harm to persons.