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Unread 04-30-2021, 07:38 PM   #16
warlok
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I can. I do want to keep it as low as possible though. Using a linear/trench style drain and already higher than I wanted. Not that bad tho. I'll raise it up another 1/4" for an inch and a 1/4 top layer. I'll still be just about 2" below the curb at the highest point in the pan.
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Unread 04-30-2021, 10:29 PM   #17
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Jason, the minimum thickness requirement for that top mud bed is 1 1/2 inches according to tile industry standards.
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Unread 05-01-2021, 06:01 PM   #18
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For taping seams on the cement board walls, should I use modified or unmodified thinset? I have a bag of unmodified here but don't know if I should use it.
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Unread 05-01-2021, 09:55 PM   #19
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You should not. If you'll go to the manufacturer's website you'll find installation instructions showing the required thinset mortar to be used.

My opinion; worth price charged.
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Unread 05-01-2021, 10:24 PM   #20
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Gotcha. Tha KS for all your advice man. I really appreciate it!
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Unread 05-05-2021, 08:59 AM   #21
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Is Amerimix Type S Mortar "fat mud"? I bought it to float my curb and build cinder block benches. Is this the correct stuff?
https://www.homedepot.com/p/Oldcastl...0010/203307880
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Unread 05-05-2021, 09:34 AM   #22
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I've never heard of the brand, Jason, but the Type S mortar should do what you need done.

My opinion; worth price charged.
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Unread 05-06-2021, 09:16 AM   #23
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Heading to HD again and I want to pick up what I'll need for Redgard and tiling.

The shower is 8' by 40" and 8' tall. I'll also be tiling the surrounding walls of a normal size 5' x 32", 8' tall bath after I finish this. Is a gallon of Redgard enough or should I get more?

I'll be putting these 8x36 3/8" thick (ish) porcelain glazed tiles on the walls, bench, and curb https://www.homedepot.com/p/MSI-Have...8X36/303402185 and these 2" hexagon satin glass 6mm (basically 1/4" thick) on the floor and niches https://www.homedepot.com/p/MSI-Drif...T6MM/300020530 using Versabond white polymer modified thinset. What trowel should I use for each? I'm thinking 3/8 x 3/8 or 1/2 x 1/2 square notch for the 8x36 tiles and 1/4 x 1/4 square notch for the mosaics. Which should I use?
Thanks again in advance.
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Unread 05-06-2021, 11:20 AM   #24
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Jason, I can't tell how many walls of which dimensions you'll have for your shower design, but if you'll download the installation instructions from Custom's RedGard website I think you'll find that your gallon would not even provide the first coat of the required two coats on all those walls.

My opinion; worth price charged.
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Unread 05-06-2021, 11:39 AM   #25
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I think the 1/2" will be a bit much for the 36's, I'd definitely start with the 3/8" trowel. I really liked the 3/8" slant notch I used for my 12X24's. I used a 1/4" square notch for the 2X2 mosaics on the shower floor with minimal squeeze out into the joints but mine were 3/8" thick.
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Unread 05-06-2021, 12:48 PM   #26
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I just saw Redgard's coverage estimator. Wow, that sucks. 55sf per gallon. I have about 130sf to cover in this shower and about 85 in the next one. I'll grab the 3.5 gallon and see how far that gets me for now. Shit's not cheap..

I have a 3/8 square notch so I try that first. I'll grab a 1/4 square notch for the floor tiles.
Thanks!
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Unread 05-08-2021, 12:34 PM   #27
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My niches are against the front drywall. How should I attach the cement board on the back of the niche? Construction adhesive right to the drywall? It will be regarded after tape and thinset.
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Unread 05-09-2021, 06:54 AM   #28
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I'd use thinset to adhere the cement board to the drywall, Jason, but since you are going to cover it with RG construction adhesive should also work.
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Unread 05-11-2021, 06:30 AM   #29
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Thanks ss3964spd.

For my benches, I'm using cinderblocks and mortar (fat mud). I "think" I read somewhere that I should put down a thin layer of thinset and then mortar while it's still wet to help it bond to the pan (dry pack). Is that correct? And if so, does it have to be modified or un-modified thinset? (I still have a bag of un-modified sitting here).
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Unread 05-11-2021, 10:21 AM   #30
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Jason, for building a monument bench over a mortar shower floor, it matters little whether you put down a bonding layer of thinset mortar before applying your fat-mud/brick mortar to set your blocks. If you elect to use a thinset mortar slurry, it matters not at all what type of thinset mortar you use. Your un-modified would be fine.

My opinion; worth price charged.
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