kohler shower drain installation

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dkkll

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• May 7, 2011

• #1

installing a k-9135/k-9136 drain in my new shower
the rough in guide does not state the size of the whole to be cut in the subfloor
i am not sure if the flange is supposed to sit on the bottom of the 4 screw bases or on the rim around the flange

 

Cacher_Chick

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• May 7, 2011

• #2

Kohler Drain

 

Last edited by a moderator: May 7, 2011

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hj

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• May 7, 2011

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The top of the "flange" is even with, or slightly below, the subfloor/mortar preslope. Then the safety membrane is laid onto the sloped mortar base and clamps between the two pieces, usually with a bead of silicone to make a better seal.

 

Cwhyu2

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• May 7, 2011

• #4

And it is always good to bevel the sub floor to fit the shower drain.Not just a hole cut in the sub floor.

 

francucio

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• Dec 3, 2017

• #5

hj said:

The top of the "flange" is even with, or slightly below, the subfloor/mortar preslope. Then the safety membrane is laid onto the sloped mortar base and clamps between the two pieces, usually with a bead of silicone to make a better seal.

Click to expand...

inorder to build a pre-slope mortar... How high do you set the tapered lip of flange adapter from sub floor ? 1/4 ", 1/2" , etc.. ?