Discuss Tanking over old tiled surface in the UK Tiling Forum area at TilersForums.com.

Y

ynot_no7

Hi there,
I have a leaking shower cubicle and am attempting to put it right. For a number of reasons, including the fit of the hinged door, I will be fitting new ceramics over old ceramics.

I appreciate all of the comments about avoiding tiles over tiles but I am stuck with this option and I have successfully removed the top surface. This was not really a problem and the tiles underneath were mostly sound.

I intend to tank the cubicle by applying the kit to the old tiled surface. I have made it level where necessary with rapid set adhesive and cleaned it with sugar soap.

Can anyone tell me if I need to do anything else to the old tile surface, such as apply primer before I start.

Also, I intend using rapid set adhesive to apply the new tiles to the tanked surface. Is this ok or do I have to prime the tanking compound.

All advice would be appreciated.

BTW, I have picked up some top tips just by browsing this site. Excellent!!!
 
N

Nardini

Sorry, but the risk of problems from tiling over is really not worth the work you will be putting into it. What is the problem with just cutting out the old tiles and sorting out the tanking from there? I know it's not easy work, but if the substrate is not sound, you will be re-doing the job several times... Just my thoughts...
 
D

dagger

Sorry, but the risk of problems from tiling over is really not worth the work you will be putting into it. What is the problem with just cutting out the old tiles and sorting out the tanking from there? I know it's not easy work, but if the substrate is not sound, you will be re-doing the job several times... Just my thoughts...
cut off all the layers back to bare, replaster, board or whatever and then tank and retile...a little more expence/effort...job done 10yr guarentee.
to go over a bad substrate is to start wrong and from there it just gets worse...

imo.
Dagger..Lee..
 
Y

ynot_no7

Thanks everyone for the advice. The reason I cannot remove the old tiles is because the hinged door frame assembly has been trimmed to fit the levels between two facing walls, each with two layers of tiles. If I remove both layers, the space will be approximately 20mm less so I have opted to maintain the original levels by removing the top layer and tiling over with a tile of similar thickness.

I have 'inherited' this problem and the person I am doing the job for soes not want the expense of a new hinged door.

many thanks for the interest shown and I'm sure I will be back to the forum for more advice in the future.
 

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Tanking over old tiled surface
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