Counterflashing skirt is recommended when pre-manufactured flashing flange extends less than 2 inches over membrane base flashing, or when membrane base flashing fasteners are exposed.
In situations where the parapet wall extends above the maximum 12-inch flashing height and wall waterproofing is required, there are several options. In the case of concrete or masonry walls: waterproofing can be provided by installation of a membrane covering, a metal covering or a waterproofing coating.
A critical and often overlooked design detail is at the termination of a parapet coping at a wall. The most common mistake at this intersection is to allow the metal coping to but up to the wall without the application of termination metal.
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