Quote:
Originally Posted by Amail
Copper and fungus; just like unicorns.

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OK, there are the exceptions. Do they exist freely in nature? Does this same wood degradation reasonably affect PT deck joists?
Apparently
Island911 believes copper in the extreme does. Or is his copper non reactive and could be substituted with any wrap-over covering?
I admit I jumped in too soon with my comment and after your response I delved in. W/o citing a bunch of studies involving micronized copper and nanoparticles, I think the idea of a copper strip is even more effective chemically speaking than a copper cover because the strip will leach into the edge of the joist whereas a cover is going to be in place mainly for it's longevity. Water in his case is apparently not intended to soak into the wood but rather be expelled.
I take my theory from the roofing business where copper and zinc are used to mitigate lichen by killing the fungal side of the complex structure.
Amial, me thinks you know a whole lot more than I ever will, but tell me, is a copper wire on top of a joist exposed to moisture a complete waste of time and material? Tell me if it has no redeemable value or let it go.