I checked the DIY today and noticed they also have plastic coated chicken wire. Presumably without zink.
So Jim, - seeing as no one else is very fascinated with the Ferrocement question - do you think that would be better for non-heat exposed constructions? The plastic would keep the wire from rusting within the cement, too.
Of course one way to find out would be to build something with each kind of chicken wire, and wait for a couple of centuries to see which lasts longer...
