What is the maximum spacing for wick weep holes?

What is the maximum spacing for wick weep holes?

• A. 16 Inches
• B. 12 Inches
• C. 20 Inches
• D. 8 Inches

Answer: (A)

Moisture control in a masonry veneer relies on wick or weep holes to drain water from the cavity and to vent air so the wall can dry. If the holes are spaced too far apart, moisture can be drawn into the wall and trapped behind the veneer, leading to dampness, staining, and potential damage from freeze–thaw cycles. The commonly accepted maximum spacing for wick weep holes is 16 inches, which balances effective drainage with reasonable construction cost. Spacing them closer (like 12 inches) is allowed and can provide extra drying capability in very damp conditions, but it’s more about added redundancy than a strict necessity. Spacing them farther apart (such as 20 inches) risks inadequate drainage, while 8 inches would be more frequent than needed in typical conditions.

Moisture control in a masonry veneer relies on wick or weep holes to drain water from the cavity and to vent air so the wall can dry. If the holes are spaced too far apart, moisture can be drawn into the wall and trapped behind the veneer, leading to dampness, staining, and potential damage from freeze–thaw cycles. The commonly accepted maximum spacing for wick weep holes is 16 inches, which balances effective drainage with reasonable construction cost. Spacing them closer (like 12 inches) is allowed and can provide extra drying capability in very damp conditions, but it’s more about added redundancy than a strict necessity. Spacing them farther apart (such as 20 inches) risks inadequate drainage, while 8 inches would be more frequent than needed in typical conditions.