New Shower from Subfloor

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  #1  
Old 06-27-18, 07:32 AM
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New Shower from Subfloor

I have demolished my bathroom and shower recently and have started to put it all back together. I used backer board for the walls in the shower, rolled plastic for the shower liner.

I then place a mud deck on top of the shower liner to hold the tile that will be place as the shower floor. However, the mud deck seems to have expanded and/or shrunk in certain areas.

Is it possible to add more mud to the already dried mud decking material.

Any help in this would be greatly appreciated.
 
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Old 06-27-18, 08:15 AM
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backer board for the walls in the shower, rolled plastic for the shower liner
So what is your plan for the walls, backer board by itself is not waterproof.

Rolled plastic, do you mean shower floor pan liner?

Plastic is not an acceptable water proof membrane!
 
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Old 06-27-18, 08:19 AM
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I used a rolled on rubber membrane for the walls to waterproof the walls.
Yes, rolled plastic is the pan liner.

On top of the liner is where I put the mud deck.
 
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Old 06-27-18, 12:49 PM
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Abrams,

Can you please be more clear to explain what you did. "rolled on" rubber doesn't make much sense. Do you mean a liquid roll on such as Redgard or Hydroband? Same goes for the shower pan.

for the pan, did you install a pre-slope on the subfloor, then the shower pan and finally the final deck mud over the pan. You're supposed to have 2 mortar layers when using the traditional method.

Jaz
 
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Old 06-27-18, 01:01 PM
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I used Mapei Mapelastic Aqua Defense (advanced liquid-rubber, extremely quick-drying waterproofing and crack-isolation membrane for installation under ceramic tile or stone)

I used the Goof Proof Showers Quick Pitch Standard Shower Kit from Floor and Decor for the sloping help. Then I used 4-1 Mud mix.
 
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