Framing & StructuralQuestion 354 of 700
In traditional three-coat stucco over metal lath, the total nominal thickness is about 7/8 inch. Which sequence of coats builds that thickness?
a.Scratch coat, brown coat, then finish coat
b.Finish coat, brown coat, then scratch coat
c.Two brown coats and one scratch coat
d.A single thick coat troweled to 7/8 inch
Explanation
Three-coat stucco is applied as a scratch coat (scored to bond the next coat), a brown coat (bringing the wall to plane), and a finish coat, totaling about 7/8 inch over metal lath. Reversing the order, doubling the brown coat, or applying one thick coat are not the standard three-coat method.
Law Reference: 2025 CA Residential Code §R703.7Practice all 700 questions free — no signup required.
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