I am completely remodeling my bathroom and after ripping out the old tile surround/drywall from my tub/shower I found that there was no vapor barrier behind it. After careful inspection I noticed no water damage in the walls and no moisture build up even without a barrier. If the process of redoing this area I am obvioulsy using cement backerboard and laying tile down again. Should I put in a vapor barrier this time around as well? My thought process is that if there was no water/moisture damage with drywall behind the original tiles there should be even less of an issue with a waterproof cement backerboard - any thoughts?
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