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Old 08-26-2008, 08:44 AM   #1
breilly79
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Can I Repair/Reuse old mortar bed

I am replacing the tiles on my bathroom walls, including the tub surround. My home was built in the 1950's and the tiles were installed over a mortar/cement bed. The mortar/cement is very solid--about 2" thick, and the metal lathe is extremely sharp. It would be very difficult, messy, heavy, and dangerous to remove it, and I would like to reuse it.

The problem is that the mortar bed has holes every four inches. I am not sure if water linked through the grout and eroded the bed at these locations, or if this is the way it should look. So imagine a cement wall with coin-sized holes every 4 inches in sort of a grid pattern.

Can I just patch up these holes with plaster, or cement, or mortar and reuse it? If so, what should I use to patch the holes? and, once repaired, what should I use to apply the new tile to the old bed?

Thanks much, Best regards---B

Last edited by breilly79; 08-26-2008 at 08:50 AM.
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Old 08-26-2008, 10:26 AM   #2
ceramictec
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Hi B,

that pan has lived its life and its not a smart idea to try to extend it any further. best to rip it all out and start fresh.
wear leather gloves for that lath.
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Old 08-26-2008, 10:40 AM   #3
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Welcome, B.

I don't think she has a pan, Brian, she indicates a tub surround, I believe.

B, I think I ain't never seen what you have and have no eye-dee what it might be. Some pichers would help. We like pichers.

But if there's a proper moisture barrier behind your mud walls, and the mud is otherwise sound, you may be able to patch those "holes" and tile.

My opinion; worth price charged.
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Old 08-26-2008, 04:48 PM   #4
jadnashua
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He posted a pic at TerryLove's...looks kind of sorry to me, but then I don't deal with them all that often...what do you think?
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Old 08-26-2008, 05:10 PM   #5
ceramictec
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Quote:
what do you think?
either get a mudman to float it out ready for new tile or remove it, fur it out and install a CBU
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Old 08-26-2008, 05:12 PM   #6
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What do I think? I think if he/she would post a picher onna plumbing forum but not on a proper tile forum that I should feel offended. So, I do.

I've never seen anything quite like that one and I don't think I'd be inclined to try to repair it and tile over it. Time for a tear-out, say I.

My opinion; worth price charged.
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Old 08-26-2008, 05:25 PM   #7
Crestone Tile
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I would also recommend tearing it out. The only way I would go about floating that is by utilizing a slurry bond coat.

..and that's only if (a big IF) there was a really good reason it had to stay.
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Old 08-27-2008, 04:53 AM   #8
bbcamp
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Iz that an example of the "one-dot" method run amuck?
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