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Old 07-06-2015, 07:32 AM   #121
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The thinset is a powder---ready to add water.

Look in the tile section,you will want a 'modified' thinset--that has a latex additive that makes it bond better than 'unmodified'

Let us know what brands you have locally,someone will suggest the best for your installation.
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Old 07-06-2015, 08:13 AM   #122
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Will I be using this modified latex thinset for tiling both the floor and the tub walls? (Just asking to know how much I'll need to buy)
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Old 07-06-2015, 08:31 AM   #123
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Yep---the same will be fine for both----I usually pay a bit extra and get white---just for the ease of cleaning out the squeeze out---but grey might be your choice, if you are using gray grout.
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Old 07-06-2015, 10:02 AM   #124
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Advice on Bathroom Remodel


If there's minimal (or no) squeeze out when glueing the tiles to the backerboard/deck mud, is it safe to say that the color of the modified thinset has no importance?

Is it also safe to assume that the color of the grout (which is something entirely different from the thinset that I'll be using the glue the tiles) relies predominantly on the color of the tile I will be installing?

I have a bag of thinset that I found in my garage that's 1/4 used but still looks good:

Advice on Bathroom Remodel-imageuploadedbydiy-chat1436194738.858972.jpg
Advice on Bathroom Remodel-imageuploadedbydiy-chat1436194751.677926.jpg

I think it's this:

http://www.mapei.com/CA-EN/Tile-&-St...s/Ultraflex--1

...atleast so I can save a bit and get rid of it.

In other news, I just got back with my new tub and overflow kit:

Advice on Bathroom Remodel-imageuploadedbydiy-chat1436194686.944857.jpg

I'm using an empty Windex bottle to spray mist on deck mud several times a day.

Last edited by Solidify; 07-06-2015 at 10:14 AM.
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Old 07-06-2015, 10:35 AM   #125
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Please take that partial bag to the curb next rubbish day. It's no good even if it has no lumps unless you opened it last month.

I highly recommend you buy white thinset. Wipe the joints as you go so that ⅔ of the depth in open for the grout. Thinset that wasn't cleaned out sticks out from the grout regardless of colors.

Please review the specific tile backer you plan for the wall and your plans for vapor and or waterproofing.

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Old 07-06-2015, 10:53 AM   #126
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Quote:
Please take that partial bag to the curb next rubbish day. It's no good even if it has no lumps unless you opened it last month.
Will do.

OK, I will buy white modified thinset.

Quote:
Please review the specific tile backer you plan for the wall and your plans for vapor and or waterproofing.
For a the vapour barrier we stappled that plastic over the wall studs, as you can see in post #59. For a tile backer we will be using a cement board, I'm not sure of the exact name but I saw it at the store and it's dark grey, pretty heavy and 33$ for a 4x8ft piece. For waterproofing I'm going to buy a fiberglass mess tape and coat the seams over it with thinset (like you guys have made clear is the norm) then use a roller to apply a membrane all over the entire cement board (I'm still not sure which membrane though).
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Old 07-06-2015, 12:04 PM   #127
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Quote:
Originally Posted by JazMan View Post
Please take that partial bag to the curb next rubbish day. It's no good even if it has no lumps unless you opened it last month.

Is it safe to assume I need to get rid of this old bag of grout as well?:

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Old 07-06-2015, 01:58 PM   #128
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Cementitious products generally have a shelf life of one year IF they're Not opened AND they are stored in a conditioned space off the floor.

You do not want plastic on the studs and also a surface membrane. Remove the plastic on the studs and go with the surface membrane. The surface membrane is much better than the barrier behind the CBU.

4x8 " concrete backer huh? You like to punish yourself? Why not go with 3x5'?

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Old 07-06-2015, 03:05 PM   #129
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I don't understand why I do not want plastic on the studs behind the CBU?

What's a surface membrane?
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Old 07-06-2015, 04:06 PM   #130
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Quote:
4x8 " concrete backer huh? You like to punish yourself? Why not go with 3x5'?
The only reason we were opting for 8' instead of 5' is because we removed the drywall all the wall until the ceiling, so it needs to be replaced, whether we tile it or not. Normally you only tile up until just below the showerhead --as far as I know--, but we were planning to use the new tiles to go all the way up to the ceiling, so we can have a vertical distinction between the tiles on the inside of the tub area vs the old style tiles that will be on the outside of the tub area.

Then again, I could just use the 3x5' CBU and use drywall to finish the walls above that 5' mark you see on the below image... and then just tile over that drywall since that second with drywall won't be subjected to water it won't need to be waterproofed (or am I wrong?)

Suggestions? Now that you've seen my plans...




Last edited by Solidify; 07-06-2015 at 04:08 PM.
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Old 07-06-2015, 04:20 PM   #131
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You were asking what a surface membrane is---the simplest and cheapest is the paint on membrane---a rubbery coating the waterproofs the surface and keeps water and moisture from entering your backer board and the framing behind it--Red Guard is one brand--Hydroban ---there are many---all very good insurance that your new tile job will be trouble free---

with the surface membrane, a plastic vapor barrier is not needed (or wanted) --in the event that some moisture reached the backer board, you want the back uncovered so it will dry out.
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Old 07-06-2015, 04:50 PM   #132
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Quote:
with the surface membrane, a plastic vapor barrier is not needed (or wanted) --in the event that some moisture reached the backer board, you want the back uncovered so it will dry out.
Oh, that makes sense. It never occurred to me because I never fully understood how the layers collectively contribute.
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Old 07-06-2015, 05:17 PM   #133
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Yep--we call that a water sandwich---I've never demoed a shower with a double barrier---so I can't say from experience if it makes a big mess or not---

It does make sense to have one or the other---I like the surface membranes--cheap insurance.
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Old 07-06-2015, 05:31 PM   #134
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Advice on Bathroom Remodel


Ok Mike, I'll go with the surface membrane and remove the plastic I had stappled.

Last edited by Solidify; 07-06-2015 at 05:39 PM.
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Old 07-06-2015, 06:43 PM   #135
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Quote:
Originally Posted by Solidify
I'll go with the surface membrane and remove the plastic I had stappled.
Good plan.......I'm glad you thought of it.

Always go with the surface membrane. Why let the concrete backer get wet it the first place? The enclosure will dry out much faster and you'll have less chance of problems.

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