Thanks for the vote of confidence Andrew. But as I mentioned earlier, I don't think my bathroom gets much humidity. Certainly there are swings when we shower, but the vent fan does a great job of removing moisture so there's never any condensate anywhere. But, OK, let's assume it was due to humidity swings. What would you do to overcome the problem? BB Ply with Unibond 800? I'm nervous about some future jobs, even though they are not for bathrooms, and want to take the most conservative approach.
John