Questions tagged [thinset]

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8
votes
4answers
28k views

Do I need a corded drill to mix thinset?

I've been looking at tearing out my fiberglass shower, installing Kerdi, and re-tiling the whole thing. During my research into this project, I've come across quite a few forums that have members ...
5
votes
3answers
1k views

Should I be able to just peel tile off the wall by hand if it is installed right?

We hired a contractor to remodel our master bathroom. For the tile installation in the shower, he started with a float-cement backing. To show quick progress, he rushed through this step and the final ...
3
votes
2answers
468 views

When stopping and starting a tile job, what to do with the extra thinset from previous row's cleanup?

When stopping and starting a tile job, you are left with the cleanup of the thinset that extends past the tiles that have been set. This thinset can be scraped up with a trowel, but leaves a light ...
3
votes
2answers
3k views

Can I put tile in my basement over Ditra and existing mastic?

My basement has been prone to getting water for many years before I bought the house. We're having the basement walls repaired (excavated outside) & sealed. So this problem should go away. The ...
2
votes
2answers
7k views

Mosaic installation: thinset excess spilling between the gaps

I'm currently placing mosaic on a concrete staircase. When I push the tiles into the thinset often the thinset is spilling through the gap. I'm removing the excess with a brush which is annoying ...
2
votes
3answers
9k views

What is the right way/tool to remove this tile and thinset from a concrete slab?

I'm finishing up my hardwood flooring project and realized I had enough material to replace a tile entry pad with hardwood. So I started removing the tile and thinset with my handy prybar. I'm finding ...
2
votes
2answers
4k views

Do I also need to apply thinset to my Subway tiles or is it enough to just put it on the wall?

Subway tile question regarding a bathtub surround. Do I need to apply thinset on the back of the tile? Subway tiles are small, can I just put thinset on the wall and apply the tiles? Thank you
2
votes
2answers
2k views

Is it better to use thin-set or self-leveling concrete on top of a shower pan, mud-bed to improve the slope and make it smoother for final tile layer?

Issue: I am looking to improve the smoothness of my my concrete mud-bed before I lay my thin-set and tile. The mud-bed has dried, but there are some dips and divots that make it difficult for me to ...
2
votes
1answer
297 views

Do I need to use a waterproof sealant in my entryway?

Do I need to use a waterproof sealant in my entryway, over the backerboard and under the porcelain tile or is the thinset adequate? Sub floor is above grade, 3/4" plywood. thanks!
2
votes
1answer
1k views

Mixing or blending diverse tile thinsets together

I would like to know if it is ever an acceptable practice to mix or blend two diverse thinsets together, and under what circumstances one may resort to this practice (outside of desperation to finish ...
2
votes
1answer
2k views

Does all wood glue need to be removed from a cement floor to use thinset to seat ceramic tile?

Does all wood glue need to be removed from a cement floor to use thinset to seat ceramic tile? We've chiseled it smooth with an air tool. If the old wood cement was water-based will thinset set?
2
votes
3answers
242 views

Concrete or mud pad below two layers of tile in bathroom. Not sure what it is and whether to demo it?

I recently started renovating one of our bathrooms. After removing a few tiles there was a second layer of tile beneath. Below the second set was a concrete/mortar base that is ~1.5 inches thick and ...
1
vote
2answers
208 views

How do I attach natural stone to backerboard in a shower

I am making a custom shower, planning to cut my own stone slabs from stones found in my area. They will be granite, quartz, some others, that I cut with my own saw. I'm wondering how to attach the ...
1
vote
2answers
2k views

Can I use Kerdi Board instead of Cement Board to thinset natural stone tile?

I've got these split face natural stones that come in 24 x 6 panels, and I was going to install them onto Cement Board using thinset. Checking the boards out (Permabase Plus), they contain silicates ...
1
vote
1answer
121 views

How should I transition between cement board floor and alcove tub?

Remodeling a bathroom and about to put in the floor. I have a plywood subfloor, and I'm about to install 1/2-in cement board on top, bedded in modified thinset spread with a quarter inch notched ...
1
vote
3answers
2k views

Fix uneven tile

My first tile job has not gone according to plan. This was my previous post on preparing the underlayment for the small mosaic tile. I pulled up the OSB and replaced, re-secured the subfloor, ...
1
vote
2answers
3k views

How can I remove or level grooves in thinset mortar from a concrete slab?

I'm redoing my bonus room, it's close to 300 sq ft and the floor is all concrete. Most of the room had carpet which came off easy but about 130 sq ft had ceramic tile that left a lot of thinset ...
1
vote
2answers
41k views

What style notched trowel should I use to lay 6“x24” ceramic on a shower wall?

I inherited a 3/8" square notched trowel and a 3/16" v-notched trowel. Which is the correct for laying down a coat of thin-set prior to attaching 6" x 24" tile to a wall? When is the correct time ...
1
vote
1answer
51 views

Can I use liquid floor leveler on a previously tiled wood bathroom floor where I could not get up all of the thin set

This is a 8 x 5 bathroom floor on the second level. The wood subfloor seems to be in good condition, no movement, solid. One section all of the old thin set that came up very nicely. The rest of it ...
1
vote
1answer
2k views

Can I use more sand topping mortar to level the slope of a shower pan?

I'm building a shower pan the traditional way using a pre-slope, then waterproof membrane, then a mortar bed using sand topping mix. I laid my mortar bed and curb and it has dried but I've noticed ...
1
vote
1answer
100 views

Do i need to worry about leveling the floor if there are dips no more then 1/8 "

I have a small bathroom ( 5' x 6' ) that i want to lay ceramic tile. I layed down the backer board and screwed down as recommended. I checked for level and i see that in some spots there are dips but ...
1
vote
1answer
2k views

Should I remove old thinset to install backsplash in kitchen?

I've recently had new kitchen cabinets installed in my kietchen. I'd like to install a new backsplash as well, the old one has been removed as shown in the picture below: My question is - should i ...
1
vote
1answer
832 views

Can I use cement accelerator to decrease setup time of modified thinset

I am installing larger format Porcelain Tile (18"x18") over ditra on a plywood subfloor. I do not want to use unmodified thinset like they recommend. The TCNA says modified in their installation ...
1
vote
2answers
2k views

What should I use to raise the height of floor tiles in a shower?

Initially, the wall tiles were installed too high off the shower floor so if floor tiles were installed, there would be a gap at the bottom of the wall tiles to top of the floor tiles. I hired a ...
1
vote
1answer
250 views

Gaps created by cement-board being further that the bathtub-lip when tiling?

My installation: Cement-board = over the bathtup lip. There's one-two spots where the cement-board is not not flush with the bathtub lip creating gaps behind few tiles are supposed to be. Can i just ...
1
vote
1answer
666 views

What is the Best mixture ratio of Portland cement Quartz sand and bonding agent for under water application

I'm installing a ceramic mosaic in the bottom of my concrete pool and wondering what is the best mixture of white Portland cement Quartz sand and a bonding agent to apply this mosaic. Can I just use ...
1
vote
1answer
233 views

How long should thinset dry before gluing up tub surround?

I replaced the walls in my bathroom and used concrete board around the shower. I plan on finishing the concrete board joints with the proper mesh tape and (premixed) thin-set as recommended but ... I ...
1
vote
1answer
118 views

Taping cementboard with mastic

In the past, I have mesh taped cementboard with thinset. Is it okay to do it with mastic instead? The reason I would prefer it is to avoid mixing thinset in my own tub, as opposed to the container the ...
1
vote
0answers
18 views

Is there anyway to prevent rust stains or staining of color on a house that has been German schmeared? (Thinset mortar applied to brick)

We applied thinset white mortar on the brick of our house using the German schmear technique. After a very very hard rain, we had some rust stains show up down the brick in areas around older gutter ...
0
votes
2answers
86 views

What to do about a tile floor that with globs of thinset

8 months after my general contractors had laid out the new tile on the bathroom floor, I noticed one of my large format tiles starting to wobble. It got progressively worse so I removed it and ...
0
votes
1answer
2k views

Reduce Tiling Dry/Wait Times

I am tiling my kitchen floor and unfortunately it is the major walkway in and out of the house. Is there anything that I can do to reduce the drying and waiting times for the thinset (both for taping ...
0
votes
2answers
2k views

Remove tile adhesive to get to screws on cement board

Looking to remove thinset / tile adhesive from the backer cement board in the tub area. I want to replace the cement board as it got damaged while removing the tiles. The problem is, the tile ...
0
votes
1answer
146 views

Detaching large ceramic tile without breaking it

Do I have any chance of lifting the tiles you see in the pictures without breaking them? You can tell from the picture what I tried and how it went!
0
votes
3answers
10k views

can I install cement backer board over plank subfloor

I have old plank subfloor installed at a 45 degree angle to the floor joists. How should I install cbu(cement backer board) on top of this for a tile installation? The entire area is approximately ...
0
votes
1answer
36 views

Laying tile over small section

I have a small section in my house that acts as "utility closet" that does not have tile like the rest of the adjacent environment (sorry for the junk laying around): My plan is to use some ...
0
votes
3answers
2k views

Removing thinset from durarock backer board

My husband and I have a huge issue right now. Some guy messed up our tile job completely, so we are removing it all and replacing it ourselves (should have done it ourselves in the first place). The ...
0
votes
2answers
59 views

Tile on the side of shower base

I saw this at a hotel where they tile on the side of the shower base which is fiberglass: My question is: Do I just tile directly on the side of the pan? How do I make the thinset to stick? Thanks.
0
votes
2answers
133 views

Tiling when some old vinyl sheet flooring is impossible to remove

When I remodel my basement bathroom and remove the old vinyl sheet flooring, I realized the current one was on top of another old one. And between the two sheet flooring layers, there is a thin layer ...
0
votes
1answer
675 views

broken cement board corner

i installed a cement board with a badly crushed corner. how should i proceed? This is for a shower it will be waterproofed with redguard (or equivalent). There is studs behind the screws on the ...
0
votes
1answer
6k views

What's the risk of water/rain falling on a recently placed tilework that's not grouted yet

I'm currently working on renewing a concrete staircase going to the garden. The shape of the stairs make it a very time-consuming job, as every step needs several custom cuts. Currently I've 3 steps ...
0
votes
1answer
7k views

White thinset on a light marble tile - tile turned dark - will it lighten?

I tiled my shower niche last night, this is my first step tiling the bathroom, today I'll move on to walls etc. I used white thinset, and some portions of the tile turned dark after installation. I ...
0
votes
0answers
19 views

perimeter/barrier/dam on thinset for self leveling compound

What product or methods can I use to create a perimeter/barrier/dam on thinset for self leveling compound in a doorway? I'm pouring 300sf in sections as the SLC has limited working time. Thermostrips ...
0
votes
0answers
13 views

Self Leveler Over Thinset Over Concrete

In the kitchen, I've removed the tile and would like to install new tile. The floor still has much thinset over concrete. The concrete has hydronic lines for heated floors, has metal mesh on the ...
0
votes
0answers
14 views

waterproof shower: waterproof pan or not?

I have a question about waterproofing our shower. We have a pre-slope, then the PVC liner, then the final mud bed. We are going to use the Aquadefense liquid waterproof membrane. We installed our ...
0
votes
0answers
18 views

How do I fix the pitch for shower in final mud pan?

We are remodeling our shower. This is our first time doing this so we are learning a lot. Our final mud pan was completed about 3 weeks ago. Trying to get the proper pitch was not very easy, however I ...
0
votes
0answers
45 views

My diamond cup wheel keeps spinning off when slowing down

I've run into a problem, I need to to remove some very stubborn thinset in my basement bathroom and also level some uneven concrete. I decided to try out the angle grinder method, I have a Bosch 1375A ...
0
votes
0answers
63 views

What is this under the backerboard?

I am currently working on demoing our kitchen and am not sure how to proceed. I recently did our bathroom and for the floor I left the old backerboard, chiseled remaining thinset, applied a self-...
0
votes
0answers
15 views

Light Frame Structure Ceramic Floor Installation

I hired a contractor who made a big mistake. He installed a ceramic floor onto 1"inch cement board (that is screw into welded beam constructed subfloor). He did not use thin set or tape over the ...
0
votes
0answers
121 views

Sound insulation for tile floor: Laticrete or NobleSeal SIS? Do I need backerboard

This will be the first time I do tiling myself. The bathroom subfloor is concrete I believe. I am on a condo top floor so will need some sound insulation. I am leaning toward Laticrete 125, but it ...
0
votes
1answer
5k views

CertainTeed DiamondBack- Waterproofing needed for tile?

I picked up some DiamondBack CBU to tile a shower enclosure, as it seems like it would be a lot easier to work with than Hardibacker (I can't cut the stuff without making a huge dusty mess, so if you ...