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Unread 09-30-2019, 06:43 PM   #12
Moderator -- Mud Man
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Join Date: Jan 2003
Location: Princeton,Tx.- Dallas area
Posts: 32,893
3/8 is quite a lot. It's worth taking down and getting the walls flat and as plumb as you can. If you didn't, it would be a good time to notch the studs for the pan liner folds. It's covered in the Shower construction thread, post 13. That keeps the pan liner folds from bulging out the CBU.
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