New answers tagged bathtub
Pros: Glue up wall is flatter, less variance, less warping generally easier to install (once prepped/drywall up) if going drywall underneath less echo/tin can sound on a direct install you must be able to pack the cavity with insulation to prevent push-in and (more) echoes, glue up you don't worry about that transition to other parts of the bathroom is ...
Hmm. I'm going to guess this is possibly water-hammer related, where a high-pressure spike caused by the toilet fill valve shutting is forcing water past the mixing valve. If so, the water would be released as the toilet stops filling, and a water hammer arrestor should settle it down, be it new and high-tech with a piston or old (merely an air-filled pipe ...
in my experience, let it dry first - just as you would let joint comound dry...dry to the touch and firm. I've pushed the envelope on a couple of occassions and what enbds up happening is the thinset shrinks as it dries, sucking the tile in, and causing a hairline crack.
I called USG,the maker of Durock cement board Next Gen, and they advised using no vapor barrier so that the wall cavity can breath and allow any moisture to evaporate. Their online instructions/diagrams show no use of a vapor barrier.
I would start with a licensed, bonded, insured plumber with a good local reputation. There is a chance that the repair will require the involvement of craftsmen from different trades (tile, spa repair, drywall/plaster); a reputable local plumber will have contacts in these fields if they are needed. Always use licensed craftsmen, check with your state/area ...
It seems to me that you have cartridge problem. Replace it and you would be fine. There is nothing wrong with your pressure or your plumbing. And Oh, Pex is fine.
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