On Thu, 11 Oct 2018 14:44:23 -0400, wrote:

On Thu, 11 Oct 2018 10:24:52 -0700, Oren wrote:

On Thu, 11 Oct 2018 08:46:35 -0400, Rusty
wrote:

On 10/10/2018 10:05 PM, wrote:
On Wed, 10 Oct 2018 17:29:24 -0700, George P
wrote:

What's a cheap but permanent way to attach one of those flimsy steel no
trespassing signs on a solid concrete outside stucco retaining wall?

Don't.
Stick a steel sign-post in the ground instead.
John T.


Agreed, that way you won't get rust streaks down the stucco.

True. But the OP wants the sign on the retaining wall

It is hard to beat TapCon screws for something like this. They are
real slow to rust and the holes are pretty small and easy to cover if
you change your mind.

Correct. Stucco -- likely thin on retaining wall, just anchor in the
block.