9.27.7.3.(1)

Intent 1:

To limit the probability of:

• splitting or displacement of shakes under loads, or
• the exposure of fasteners, which could lead to the creation of a through-path for water, which could lead to corrosion, loss of strength and dislodgement of shingles and shakes under loads.

This is to limit the probability of precipitation or meltwater ingress, which could lead to deterioration, which could lead to the structural failure of exterior walls or elements protected by exterior walls, which could lead to harm to persons.