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Old 07-06-2014, 08:02 PM   #1
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Tiling over Original 1970 Mud Bed for Bathroom Remodel


All,

Been reading the forums for quite a while now and this is my first post.

My mother would like to replace the original tile floor in her bathroom with new porcelain tile. The floor is 40 square feet. The house is a bi-level in Northern NJ built in 1970. The bathroom room is on the main floor with the garage below it.

I removed a couple of tiles to see what is underneath and I had a tile contractor at the house today. He said that he would do the following:

1. Remove the rest of the floor tiles
2. Spread the thinset on top of what he called the existing "mud" base that the original tiles were placed on.
4. The floor is not flat, there is a little bit of bevel in it. He said he would "build up" the floor to flatten with what I am assuming is the thinset.
3. Put the new tiles on top of the new thinset.

Kindly seeking everyone's thoughts and input on what the contractor said and how this job should be done properly.

Thank you all for your time and assistance.

CDE

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Old 07-06-2014, 10:24 PM   #2
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Tiling over Original 1970 Mud Bed for Bathroom Remodel


True mud bed tile installs were rare by the 1970s---I am guessing that this is a 'Jersey mud job'---expanded mesh covered with thinset---

If that is the case--remove it back to the subfloor and use durrock or a modern membrane--those jersey mud jobs are unstable--disturbing the tiles may cause it to break loose.

Pull a heat cover if you have one--a true mud set is usually 1 1/2" thick or more--

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