Which value represents the minimum vertical size of the weep screed flange?

Which value represents the minimum vertical size of the weep screed flange?

• A. 3 inches
• B. 4 inches
• C. 3-1/2 inches
• D. 4-1/2 inches

Answer: (C)

Weep screed helps manage drainage at the base of a stucco or veneer wall, and the vertical size of its flange determines how much of a drainage and ventilating gap the flashing provides. The flange must project enough to keep moisture from wicking back into the wall cavity and to allow water that reaches the bottom to drain away freely. A vertical size of three and a half inches is the smallest dimension that reliably maintains that drainage path and separation from the stucco above, while still fitting with typical framing and finish details. Bigger values can meet the requirement too, but they’re not the minimum.

Weep screed helps manage drainage at the base of a stucco or veneer wall, and the vertical size of its flange determines how much of a drainage and ventilating gap the flashing provides. The flange must project enough to keep moisture from wicking back into the wall cavity and to allow water that reaches the bottom to drain away freely. A vertical size of three and a half inches is the smallest dimension that reliably maintains that drainage path and separation from the stucco above, while still fitting with typical framing and finish details. Bigger values can meet the requirement too, but they’re not the minimum.