Originally Posted by
Jakezilla
I am a plasterer by trade, family business. If the stucco was applied in the 70s it's probably plywood, maybe tar paper (been a long time) then wire mesh similar to expanded metal then a cement coat, then the finish coat. If it was more than about an inch thick on top of the plywood I would be surprised. If that is what she is dealing with it should be no problem strapping it.
If it's the new stucco like MarkB is talking about. Tell her to leave it, the foam is thick and it would be hard to get the siding fastened properly. I have worked with it and I don't like it, if anything happens to it, cracks or damage, you can't match the finish. It's good for commercial buildings but I don't like it for residential housing.