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Unread 03-09-2020, 01:02 PM   #1
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Pans for LFT tub surround


I’m about to start a tub surround and want to run my plans by some experts before I start. I’ve done a few walk in showers, a few tub surrounds, and quite a few floors. This is my first LFT on walls. This is my house.

Tiles are 12”x24” porcelain. Walls are 1/2” Hardie, and appear to be very flat. Back wall is 59”. Tub is 36”, so end walls will be ~39”. I’m using Mapei ultra flex LFT mortar with a 1/2” square notch trowel. I will skim back side of tile. Ceiling is 99” from tub deck, so Ill start with a ledger board at 7-8”. The first tile will start at the center line of the back wall and I’ll fold them around the end walls using a 1/3 overlap pattern. Spacers will be 3/16”, as I prefer to play it safe here.

Any errors in my thinking here?
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Unread 03-09-2020, 03:35 PM   #2
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Sounds solid, Jay, but if the walls are pretty darn flat you might consider a 3/8" slant notch trowel. The slant notch lets the ridges fall over into the voids easier, and less mortar means reduced chance of squeeze out into the grout joints.

I used the same 3/8" SL trowel for my walls and floor, both have 12X24's (except the shower floor).

What's your water proofing?
If I recall correctly my memory is excellent, but my ability to access it is intermittent.

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Unread 03-09-2020, 04:14 PM   #3
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I’ll grab one of those trowels. Waterproofing is Mapei Aqua Defense.
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Unread 03-14-2020, 12:09 PM   #4
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Just how I would do it.

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