tore thhe shower pan out couple weeks ago because I wasnt happy with it. So the question is, what wall do I put the folds on. the back wall or the side walls. If I do back wall only one wall to shim. If I do side the two walls to shim amd extra thickness where it meets drywall. it just a common rectangle with open front wall. Just thiking here thats all.
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Just a common rectangle......
That being the case, what does it matter?....if you shim the back wall (1 wall) it's probably twice as long as the side wall. If folds are on the side walls (2 wall to shim), you still are shimming the same approx. square footage.
BTW, if you trim away the excess material in the corners and fold it correctly, there is no need for shimming.
Davo
"BTW, if you trim away the excess material in the corners and fold it correctly, there is no need for shimming."
That's only true if he's going to float the walls with mortar. Otherwise, he will need to furr out ALL of the walls before he installs the moisture barrier and CBU.
The CBU cannot be simply laid on top of the up-turned membrane and folds. It will kick out and look ugly. Last shower I did I used cedar lattice to furr out the framing. I did a little bit of notching on a few pieces to allow it to sit nicely over the membrane. I would not try to skimp on this step.