So, I was thinking about getting one of those el-cheapo metal storage sheds at work. Reviews indicate that the supplied floor kit is utter crap, so I figured I'd build myself one using pressure-treated wood with joists on 12" centres and it'll most likely outlast the shed.
Except of course that metal - beyond stainless steel and hot-dipped galvanized - in contact with PT wood isn't a good idea. So... is there standard practice for providing a barrier between the two?
I did see mention of using 10-mil poly sheet, but the only stuff I've seen so far is only 6-mil, and on a big, expensive roll, when all I'd need would ~50 feet of 2" wide strips.
I do have a big roll of roofing felt kicking around in the warehouse, so maybe that will work? I'm not particularly concerned myself and probably all sorts of things would do, but I know that at least one of the shed vendors states that having their shed in direct contact with PT wood will void the warranty, so I want to do things such that they wouldn't deny any potential claim made for other reasons based on what they decided was an insufficient barrier material.