I'm considering using nails as an alternative to "backer" screws. The manufacturer recommends "1 1/4" hot dipped galvanized roofing nails" for this application - hardibacker underlayment for bathroom tile job. I don't care about pros/cons of hardibacker, it's a moot point.
I cannot find 'hot dipped' nails anywhere it seems. All are "electroplate galvanized". It seems to me the electroplate types, due to their 'smoothness' won't hold as well as 'dipped'. But I am more concerned about the efficacy of electroplate galvanized to withstand the potential adverse effects of this environment. Is there much of a difference between hot dipped and electroplate galvanized or am I just being paranoid?