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shower tile replacement, need to repair backing - concrete?

shower tile replacement, need to repair backing - concrete?

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  #1  
Old 09-01-02, 06:55 PM
learning2do
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shower tile replacement, need to repair backing - concrete?

We have removed some broken tiles from our ~1950s shower stall in a 1906 house. The tiles look like they are attached to concrete about one-and-a-half inches thick. Some of the concrete/backing is broken (a handrail obviously had pulled away), so we are not sure what to do to fill in the holes and treat the surface so that the replacement tiles will adhere. Also there are gaps in the wall where there is not any concrete, should we try to squeeze some into those gaps? Do we need to scrape the concrete surface so that the tiles will stick? If so, how much needs to be scraped off so that the tiles will be relatively level with the rest? What tool is used to scrape concrete?

Also in a few spots along the edges of two walls there are a series of large, uncovered screws, one is just above the floor and one is on the surface where the spray hits direct from the showerhead. Will covering them with caulk be enough? We can't figure out why they are there.

One more thought, some tiles have surface glazing that is cracked/chipped or deeply scratched, yet the ceramic itself is entire; they are also in spots that are - of course- difficult to remove without damaging others. Is there anything we can cover the cracks with to prevent possible water seepage?

Thanks much
 
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  #2  
Old 09-03-02, 04:40 AM
Doug Aleshire's Avatar
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shower tile replacement

learning2do,

It appears that you have plaster walls behind the tile but with the various issues you describe it seems that a total redo should be considered.

If you can try and salvage the plaster walls, if they are too bad, replace with wonderboard.

If the plaster can be salvaged, removal of all adhesive can be done with a paint scraper after removing all the tiles and skim coat the surface ensuring that all areas are filled in and flat. Install new tile and grout, seal.

Hope this helps!
 
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