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Unread 08-01-2020, 01:44 PM   #16
jadnashua
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Some of their pans come with Kerdi already installed...it used to be only the linear drain ones, but they were talking about doing it for the others...do not know if that happened.

Prior to the advent of the preformed corners, their approved method was just the proper folding of the membrane. Done right, it works fine.

Whatever you do, you want at least a 2" overlap of the membrane's surfaces.
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Unread 08-01-2020, 01:52 PM   #17
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Also, some valves have built-in shutoffs...you need enough room to access them, if present. From a practical viewpoint, for maintenance down the road, you don't need to remove the trim to change the cartridge, and the in-line shutoffs may not work (plus, you'd have to take off the trim, so may not know they are there!). In-line shutoffs can be useful during the build so you don't need to leave the water off or install the cartridge that might get damaged while building up the wall and tile.
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Unread 08-01-2020, 02:17 PM   #18
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Space around valve to seal?

Schluter makes a seal for valve body and faucet and shower head.


https://sccpublic.s3-external-1.amaz...ts_nograte.jpg
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Unread 08-02-2020, 06:59 AM   #19
qwertyjjj
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Kerb from 2x4 and leftover kerdi board

I need a L shaped curb that is around 40" on one side and 12" on the short side
This means 2 kerdi curbs and most of it is wasted. They are also expensive for what they are.
So, I'd like to make my own ones.
Can I just stack 2 2x4s and cover them with leftover kerdi board then waterproof as normal?
The subfloor is OSB so I would just glue and screw them in.
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Unread 08-02-2020, 07:17 AM   #20
cx
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Yes, you could do that. You could also cover the wood curb with Drywall or CBU and then cover it with Kerdi membrane if you prefer.

My opinion; worth price charged.
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Unread 08-02-2020, 09:01 AM   #21
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Hi Gordon,

Wood will work over a wood floor. If your floor is concrete you'll need to use bricks or cement blocks. Wood will draw moisture from the concrete and swell the wood, thus popping your tiles loose.
Over wood floors I used to use a single 2x4 on edge to make a thinner curb. I have also sawn Kerdi curbs thinner on my table saw.
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Unread 08-03-2020, 05:39 PM   #22
jadnashua
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Depending on how much Kerdiboard you have left over, you can laminate it together and use it for your curb.
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