CSLB General Building (B)Finishes and Building EnvelopeMedium
A stucco contractor is installing a weep screed at the base of an exterior wall over a concrete foundation. Per code, what is the minimum clearance required between the bottom of the weep screed and earth (grade)?
- A4 inches
- B2 inches
- C1 inch
- D6 inches
Show answer & explanationAnswer & explanation
Correct answer: A. 4 inches
The CRC/CBC requires a minimum of 4 inches of clearance between the weep screed and earth, and a minimum of 2 inches above paved areas, to prevent moisture wicking into the wall assembly.
Why the other options are wrong
- B. This is the minimum clearance above paved surfaces, not earth.
- C. Too small to prevent moisture wicking from soil.
- D. Exceeds the code minimum; not the required standard.
Weep Screed Clearance
A metal flashing installed at the base of stucco walls to allow moisture drainage; code sets minimum clearances above grade and paving to prevent water intrusion.
- 4 inches minimum above earth/grade
- 2 inches minimum above paved surfaces
- Prevents wicking and rot at wall base
Memory trick: 'Four inches from dirt keeps stucco alert.'