Questions tagged [thinset]

The tag has no usage guidance.

Filter by
Sorted by
Tagged with
0 votes
0 answers
38 views

Can I use mastic to apply stone to an interior wall sheathed with OSB?

I am in the process of building out a man cave. I have selected MSI split marble stacked stone for the bar. The bar is L shaped approx 40 1/2” high. What are the pros/cons of using mastic to apply ...
Rich's user avatar
  • 1
0 votes
2 answers
147 views

How smooth does the subfloor need to be before installing cement board for tiling? [closed]

I have removed the previous tile and cement board from the bathroom. I knocked down all the major ridges and bumps from leftover thinset on the subfloor. What remains is a very thin layer on thinset ...
Niko's user avatar
  • 367
0 votes
1 answer
409 views

Can I cover existing thin set mortar with 1/4" plywood then install new vinyl plank?

I removed ceramic tile and high spots of thin set mortar. Can I now install 1/4" plywood and install vinyl plank flooring?
user173523's user avatar
0 votes
1 answer
865 views

What adhesive do I need for this fireplace cladding?

I have a fireplace where the stones are falling out and some are loose. This is my first time dealing with fireplaces so i’m not sure what type of stone this is. What type of adhesive would I need for ...
John Wayne's user avatar
0 votes
1 answer
407 views

What type of mortar and trowel size be used for stacked stone around gas fireplace?

Specifically, I'm installing Rockmount Stacked Stone from MSI around a gas fireplace. Using 1/2" cement board as my backer. https://www.msisurfaces.com/stacked-stone/silver-travertine/ I've ...
EMAW2008's user avatar
  • 387
5 votes
5 answers
7k views

Tiling - place thinset on wall and tile or just tile or just wall?

Watching videos on tiling. I have small (4 inch square tiles). I see some installers putting thinset on wall and no thinset on tile - just press to wall. That's difficult because the space is very ...
ssaltman's user avatar
  • 460
0 votes
1 answer
419 views

Can I apply concrete over tile mortar on a wall?

I am renovating a bathroom in a concrete structure. The bathroom had tiles on the walls (all now removed), but the amount of thinset used on two of the walls is kinda ridiculous. I have been able to ...
OKDrewB's user avatar
3 votes
1 answer
661 views

Getting tiles in plane -- What if use a *too large* notch trowel?

Is there a consequence to using too large a notch trowel, aside from wasted thinset? Asking for 2 reasons: I'm installing 16x24 tiles on a floor, with 5x5 "accent strip." Both tiles ~10mm ...
borisj's user avatar
  • 145
0 votes
2 answers
152 views

remove mortar + cement board? or self level ontop? Bathroom Floor

I have some mortar on a cement board on my bathroom floor it seems. I want to put luxury vinyl over this. Is my best bet removing the mortar + cement board and then redoing that process? or using some ...
excelguy's user avatar
  • 101
1 vote
2 answers
277 views

Floor tile not perfectly flat, chair would rock on it, is this normal?

I recently tiled my bathroom floor with 12" x 24" tile. I used 1/2" square trowel with thinset for large format tile, and also used leveling clips. As this is what most DIY tutorial ...
MIDNIGHT LAWN MOWER's user avatar
1 vote
1 answer
467 views

In what order should I install backerboard, a mortar skim coat, and liquid waterproofing?

So, we bought a house with the intention of doing most of the finishing levels of renovation ourselves and hiring to have structural work done. The contractor put up cement board after repairing some ...
user2934942's user avatar
0 votes
2 answers
497 views

How to remove tile mortar from painted baseboard?

I'm in the process of having a floor re-tiled. I have noticed that there are several areas where the tiler has splashed thinset mortar onto the painted, contoured baseboard. In reviewing online I ...
Peter M's user avatar
  • 360
0 votes
1 answer
952 views

Is it acceptable to remove freshly (1 day old) installed porcelain tile and reuse it to correct a bad layout?

With one day of installation work completed I checked the layout and realized it would result in sliver cuts along some of the main walls. This morning I stopped them from continuing work and their ...
Xylocarpus's user avatar
1 vote
1 answer
2k views

Could Regular thinset be used on Large format tiles

I have a full bag of regular thinset and want to use it for 1 foot by 2 feet tiles on floor. Could I use regular thinset or shall buy a bag of Large format tile thinset? Is there huge difference in ...
NIT_GUP's user avatar
  • 121
0 votes
2 answers
5k views

Can Mapei type 1 thinset be used over RedGard waterproof membrane?

I used Mapei type 1 thinset in a shower area over a waterproof membrane (red guard) . The ceramic tile job is about done. I trusted a friend knew what he was doing that was helping me and after ...
Art's user avatar
  • 1
6 votes
3 answers
4k views

Why can't you install larger floor tiles without thinset/adhesive?

I can understand the need for adhesive for wall tiles. But if you have a flat floor, and medium to large tiles, why can't you just lay your floor tiles on the floor without any thinset and grout it. ...
Kashif999's user avatar
1 vote
0 answers
2k views

Thinset too dry before laying tile? Not dry enough?

Yesterday I laid 6x36 wood-look porcelain tile in my bedroom using a mapei ultraflex LFT thinset directly to the concrete slab. It's been 24 hours, and I am now pulling off the top tab of the spacers ...
CodingToWork's user avatar
1 vote
1 answer
3k views

Should one use modified thinset when using a waterproof membrane like Redguard?

As far as I understand they require us to use unmodified thin set when using Kerdi™ boards or the like. Because they are waterproof, in case you would use modified thinset this will trap the moisture ...
MiniMe's user avatar
  • 3,402
0 votes
0 answers
302 views

Is non-sag mortar appropriate for large tile on walls?

I am learning about thinsets and their use. As far as I can understand when it says large tiles it basically means no sag. Now in my understanding a tile wont sag on the wall unless some horizontal ...
MiniMe's user avatar
  • 3,402
6 votes
3 answers
41k views

What do you use to mud the joins between cement boards on walls?

I am seeing contradictory informations.. .some use drywall mud others say use exactly the same thin set you plan to use for your tiles.
MiniMe's user avatar
  • 3,402
1 vote
2 answers
418 views

Am I calculating the trowel size correctly here?

I am trying to calculate what trowel size (fast set thickness) I need in order to obtain a flush level between the tiles and the green marked area in the diagram below. Here is some context first: I ...
MiniMe's user avatar
  • 3,402
0 votes
0 answers
535 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 ...
Tim's user avatar
  • 1
0 votes
0 answers
1k 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 ...
Tim's user avatar
  • 1
0 votes
0 answers
263 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 ...
Laurie Wisecup's user avatar
0 votes
0 answers
425 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 ...
JamesO's user avatar
  • 1
1 vote
1 answer
2k 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 ...
Uncle Woody's user avatar
0 votes
0 answers
74 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-...
brosquad's user avatar
0 votes
1 answer
82 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 ...
Alessio Sangalli's user avatar
1 vote
1 answer
2k views

Can I tape cement board with mastic instead of mortar?

In the past, I have mesh taped cement board 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 ...
amphibient's user avatar
  • 7,489
1 vote
0 answers
49 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 ...
Colin Jenney's user avatar
1 vote
1 answer
135 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 ...
Jlh 's user avatar
  • 11
1 vote
2 answers
2k 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 ...
Steve Foutz's user avatar
0 votes
6 answers
12k views

Removing thinset from cement 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 ...
Rosemary's user avatar
2 votes
2 answers
8k views

How do I improve the slope of my mud bed 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 ...
Scottran2's user avatar
0 votes
2 answers
378 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 ...
4m1r's user avatar
  • 101
-2 votes
1 answer
80 views

Is unmodified thinset ok for radiant heating under hardwood flooring?

So me and my dad are renovating and decided to add electric radiant heating in out living room/kitchen. We are following this video as a guide https://youtu.be/sXhT1fYVPps. They said to use latex ...
kacy's user avatar
  • 1
2 votes
3 answers
2k 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 ...
James's user avatar
  • 33
3 votes
2 answers
774 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 ...
Evil Elf's user avatar
  • 3,819
0 votes
2 answers
625 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.
HP.'s user avatar
  • 1,862
0 votes
2 answers
405 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 ...
HP.'s user avatar
  • 1,862
1 vote
1 answer
7k 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 ...
Abilectic's user avatar
1 vote
1 answer
559 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 ...
rkmc's user avatar
  • 11
0 votes
1 answer
2k 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!
Wynne's user avatar
  • 1,541
0 votes
1 answer
6k 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 ...
Steve Salowitz's user avatar
1 vote
1 answer
3k 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 ...
CrimsonX's user avatar
  • 121
1 vote
3 answers
19k 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 ...
joe's user avatar
  • 510
0 votes
1 answer
1k 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 ...
joe's user avatar
  • 510
1 vote
2 answers
3k 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 ...
Saeven's user avatar
  • 123
1 vote
3 answers
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, ...
d_ethier's user avatar
  • 113
1 vote
1 answer
1k 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 ...
Matt Kriser's user avatar