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Unread 09-11-2019, 08:34 PM   #1
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Advice re repairing shower pan

Installer did not pre-slope slower floor; liner is flat, resulting in water accumulating below floor tile and moisture discoloring grout in floor tile.

Installer is proposing to remove floor tile and first few layers of shower wall tile and underlying DenseShield; then remove and rebuild shower pan with proper pre-slope and new liner, then retiling floor; and then putting new DenseShield panels in the remove parts of the shower walls, using Red Guard to seal the seams, and then retiling bottom of walls.

Is this repair advisable? In particular, I am concerned about shower-wall seal. Would you be comfortable with RedGuard patch on wall seams?

Alternative is redoing shower completely.

Thanks in advance.
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Unread 09-12-2019, 06:04 AM   #2
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You are right to be concerned about the shower wall seal.

First question is, how were the walls originally sealed?
If I recall correctly my memory is excellent, but my ability to access it is intermittent.
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Unread 09-12-2019, 06:27 AM   #3
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yes it is very "doable". If the pan waterproofing is under(behind) the wall board, there is a TCNA detail for it. The curb is the tricky part..
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Unread 09-12-2019, 12:24 PM   #4
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shower stall

Carefully chip away tile at the drain only and the mud thinset round it .Hopefully this will free up the strainer and you can move it up some accommodate a thin mosaic 1x1 or 2x2 floor. Clean floor and scarify and paint on Hydroban or red guard, Install new floor with premium thinset over the existing floor. Should work fine. You always want to be the least aggressive as possible on repairs

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