September 12, 2017
I assume you're referencing ASTM C 1063 where it discusses thru-wall flashing for lathe on framed walls. This Standard also has overall definitions for "drainage plane" and its "water barrier".
Also look at ASTM C 926, which has a chapter called "Provisions for Drainage Behind Exterior Plaster". Here the same thru-wall flashing recommendation appears to be listed for the base of all walls.
April 2, 2015
I am looking for a clearly defined explanation of the requirements regarding direct applied stucco (cement based plaster) installed at grade level in Florida.
Specifically, we were asked to inspect a new home that is experiencing grade level water intrusion. The construction is CMU walls with direct applied stucco on slab on grade. Framed walls require a weep screed and that the stucco terminate 4 inches above grade. The direct applied stucco on this house extends below the earth. The raw stucco edge appears to be wicking moisture up into the wall system, the CMU and interior drywall are getting wet. Is there a code requirement or standard of practice that clearly states that direct applied stucco also should not continue below grade? I am just not finding it clearly spelled out in the ICC or FBC.
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