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Old 08-30-2009, 10:30 PM   #1
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Dry Pack Mortar Bed Slope in Shower


I just put in a dry mortar bed in a 58"x60" shower. The drain is at 28" centered from the walls and I have a 3/4" slope from the side walls.

Is this correct or should the 1/4" every foot be from the corners?

If it isn't correct, what can I do other than tear it out and start over?

The pic is a little blurry but hopefully it will work.
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Old 08-30-2009, 10:52 PM   #2
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Dry Pack Mortar Bed Slope in Shower


Is that a Kerdi drain in the floor?
Ron

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Old 08-31-2009, 08:23 AM   #3
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Dry Pack Mortar Bed Slope in Shower


Yes.

The depth at the outer ring is 1 1/4" and 2" at the wall.
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Old 08-31-2009, 11:29 AM   #4
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Dry Pack Mortar Bed Slope in Shower


Pour some water in there and see how it works. It should be tested anyway.
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Old 08-31-2009, 11:40 AM   #5
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Dry Pack Mortar Bed Slope in Shower


I asked that question and was told that if the mortar bed was done correctly, the water would just go through the mortar.


I may try putting a very thin sheet of plastic in there and see if it drains.
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Old 08-31-2009, 05:24 PM   #6
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Dry Pack Mortar Bed Slope in Shower


Quote:
Originally Posted by Mop in Hand View Post
Pour some water in there and see how it works. It should be tested anyway.
It needs the membrane system installed prior to testing.
The slope you have is fine.
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Old 08-31-2009, 07:59 PM   #7
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Dry Pack Mortar Bed Slope in Shower


Thank you. That really puts my mind at ease.

For future reference, should the 1/4" per foot rule be measured from the corner or from the side walls?
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Old 08-31-2009, 09:07 PM   #8
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Dry Pack Mortar Bed Slope in Shower


Just use a small torpedo level ALL OVER THE PLACE. Make sure that you've got pitch to the drain at all locations and don't focus so hard on 1/4" per foot (although that's probably ideal) or corners versus walls. Measuring can get you in trouble in my opinion, but a level bubble doesn't lie. Sometimes a longer straight edge helps you identify low spots or flat spots that won't drain well or will hold water after use.

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