Installing a toilet on new tile floor

[sandman512]

I have a bathroom that I plan on remodeling. I plan on putting the new tile over the existing tile. My question is, when I go to install the new toilet, is there anything special I need to pay attention to? Thanks in advance!

[cwbuff]

Toilet flanges and seals are designed to work best when the flange sits on top of the finished floor. You can buy a flange extension ring and seals designed to compensate for a lower flange.

Tile over tile is going to add height that may be a problem in other areas. I'll let the tile guys comment about tile over tile but it doesn't sound like a good idea to me.

[sandman512]

Originally Posted by cwbuff

Toilet flanges and seals are designed to work best when the flange sits on top of the finished floor. You can buy a flange extension ring and seals designed to compensate for a lower flange.

Tile over tile is going to add height that may be a problem in other areas. I'll let the tile guys comment about tile over tile but it doesn't sound like a good idea to me.

Thanks for the reply. I too was concerned about tile over tile, but after speaking to several people, it can be done. The reason I chose this was because the existing tile is solid and level and will make a good base. Thanks again!

[HotinOKC]

Well, tiling over tile is not the greatest thing too do. If the existing tile fails for any reason, the cracking will telegraph to the new tile and grout.

Is this on slab or wooden subfloor?

How did these other people tell you to tile over the existing?

If it HAD to be done, you would have to sand down the existing tile to remove the glaze and then use the best mofdified thinset you can get your hands on.

[sandman512]

Originally Posted by HotinOKC

Well, tiling over tile is not the greatest thing too do. If the existing tile fails for any reason, the cracking will telegraph to the new tile and grout.

Is this on slab or wooden subfloor?

How did these other people tell you to tile over the existing?

If it HAD to be done, you would have to sand down the existing tile to remove the glaze and then use the best mofdified thinset you can get your hands on.

It's on a wooden subfloor. I was aware of sanding down the existing tile to get rid of the glaze. What thinset would you recommend? The reason I was considering this was to that the current floor is nice and level. Also, this is a smaller bathroom on my first floor.

[sandman512]

Originally Posted by sandman512

It's on a wooden subfloor. I was aware of sanding down the existing tile to get rid of the glaze. What thinset would you recommend? The reason I was considering this was to that the current floor is nice and level. Also, this is a smaller bathroom on my first floor.

Just an addendum, good you point in the right direction for a good modified thin set? THANKS!

[Rivethead]

We just finished doing two bathrooms in our house - I'm not a tile expert so keep that in mind:

I would not put tile over tile - you'll end up with a ramp effect from the adjoining hallway - seating the toilet will be a real challenge - you don't know how well the previous job was done.

If it's a small bath taking up the old stuff will be less of a challenge and you'll know it's right when you finish. If handi backer was put down maybe you'll get lucky and the previous installer nailed it down without thinset under it.

If you gut it make sure you use thinset under the new handi backer and install screws at each point indicated. The bath we just finished we put travertine down over 1/4 backer. Granted travertine is thick but even that height created a toilet seating challenge. It took two attempts with a tile wax seal and another plain wax seal stacked on top of it. Helpful tip on seating the toilet - cut a drinking straw in half and slide them down over the bolts - gives you something to guide the toilet down over. Good luck with your project.....