On Thu, 17 Sep 2015 18:14:50 -0400, "Mayayana"
wrote:

They both have copper. You said the required
fasteners are different for each. I've used mostly
plain galvanized nails with both and never seen
a problem.


I am doing a test on this as we speak
It has been going on for close to 2 years and I haven't seen anything
unusual yet.
This is sitting on the south side of my screen cage, out in the yard.
http://gfretwell.com/ftp/PT%20lumber...2010-25-13.jpg