View Full Version : kohler shower drain installation

05-07-2011, 07:17 AM
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

05-07-2011, 07:47 AM

Kohler Drain

05-07-2011, 08:09 AM
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.

05-07-2011, 09:38 AM
And it is always good to bevel the sub floor to fit the shower drain.Not just a hole cut in the sub floor.