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Unread 01-13-2020, 03:14 PM   #1
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Kerdi - Order of installation?

Hello everyone. We (hubs and I, mostly hubs) are working on a shower remodel. I bought the Kerdi ebook several years ago and we're just now getting to the remodel.

Does the order of installation of the waterproofing matter with Kerdi? We have the Kerdi Board walls up and I was hoping to apply the Kerdi Band to the corners and fasteners before we put the tray in.

I've seen in the Kerdi video that the tray is installed, attached to wall with band, lower corners put in, and then the vertical corner band.

I just wasn't sure if the order mattered.

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Unread 01-13-2020, 04:23 PM   #2
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Welcome, Lindsey.

The order of installation does not matter so long as you provide the required membrane overlaps and install them properly.

When building direct bonded waterproofing membrane (Kerdi, etc.) showers, I never even install the drain until the ceiling and walls are installed, tiled except for the bottom row, and frequently grouted. One of the major benefits of that type shower construction to my thinking.

My opinion; worth price charged.

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Unread 01-13-2020, 06:26 PM   #3
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Common wisdom would be it should be applied like roofing shingles, but in reality, it doesn't matter at all, as was said, if you get the required overlap and have good workmanship.
Jim DeBruycker
Not a pro, multiple Schluter Workshops (Schluterville and 2013 and 2014 at Schluter Headquarters), Mapei Training 2014, Laticrete Workshop 2014, Custom Building Products Workshop 2015, and Longtime Forum Participant.
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Unread 01-14-2020, 06:51 AM   #4
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Thanks! I appreciate the quick feedback!
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Unread 01-14-2020, 08:38 AM   #5
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The order doesn't matter, but I always start at the bottom and work my way up. That way, in the unlikely event that a seam fails, water would have to run uphill a couple of inches to cause damage.

But that's just me.

The top ten reasons to procrastinate:

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