On Apr 13, 11:20*pm, Robert Neville wrote:
David Nebenzahl wrote:
As others have pointed out, that's a weak way to attach anything to
stucco. After all, it's at best about 1/2" thick. Just use screws long
enough to bite into the wall sheathing (plywood or 3/4" boards).



Unfortunately that only works if there is OSB or plywood as sheathing. In a
non-stress location, it could likely be fiberboard behind the stucco that won't
hold a screw.

The OP has already stated:

"The cement stucco is about 1/2" thick, and the plywood behind it is
another 1/2" thick... "

If we can't trust the OP, who can we trust? ;-)