Discuss Confused about tiles on lime plaster in the DIY Tiling Forum | How to tile area at TilersForums.com

D
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Hi

I everyone.

I have just had a wall re-plastered in my bathroom, using lime plaster. The house is Victorian and that is what was there originally. I am currently waiting for the new plaster to dry but I am a bit confused about which products to use. Part of the wall is adjacent to the bath and has a shower above the bath, so the area will be a wet area. The tiles are large (25cm x 75cm - 8mm thick).

Should I use a breathable adhesive such as Adhere Cal or would a standard adhesive do? I'm not sure that a cement based adhesive should be in contact with lime plaster. Also, do I need to seal the wall or is that counter productive? The way I see it is that the tiles themselves are not breathable and the grout will need to be waterproof anyway.

Please tell me I am worrying too much. 😁😁

Although I am posting as a DIYer, I used to fit bathrooms for a living up until a few years ago, so I have tiled many floors and walls but never had to deal with lime plaster before.

All advice gratefully received.

Cheers!
 
T

Trigger

Arms
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Hi Dongles

Can't give you an answer i'm afraid, but the whole purpose of lime render is so that the wall can breathe both internally and externally as you are aware by the sound of it. Putting any kind of covering over it such as tiles, wallpaper and modern paints defeats the object of having breathable walls and means moisture can be trapped in the wall.

Google Mick Wye, they are lime specialists and may be able to offer some advise.
 
OP
D
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Hi Dongles

Can't give you an answer i'm afraid, but the whole purpose of lime render is so that the wall can breathe both internally and externally as you are aware by the sound of it. Putting any kind of covering over it such as tiles, wallpaper and modern paints defeats the object of having breathable walls and means moisture can be trapped in the wall.

Google Mick Wye, they are lime specialists and may be able to offer some advise.
 
OP
D
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Thanks for your reply trigger. Confusing isn't it. There were tiles on there before. I can say now that the problem I had was definitely with the 'No more ply', so I have not used it this time. Advice from my local tiles shop was to prime the wall using primer A, and then tile as normal with Biogel adhesive??
We shall see, if the house falls down I will let you know. 😄
 
Kevbos

Kevbos

Arms
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Hi

I everyone.

I have just had a wall re-plastered in my bathroom, using lime plaster. The house is Victorian and that is what was there originally. I am currently waiting for the new plaster to dry but I am a bit confused about which products to use. Part of the wall is adjacent to the bath and has a shower above the bath, so the area will be a wet area. The tiles are large (25cm x 75cm - 8mm thick).

Should I use a breathable adhesive such as Adhere Cal or would a standard adhesive do? I'm not sure that a cement based adhesive should be in contact with lime plaster. Also, do I need to seal the wall or is that counter productive? The way I see it is that the tiles themselves are not breathable and the grout will need to be waterproof anyway.

Please tell me I am worrying too much. 😁😁

Although I am posting as a DIYer, I used to fit bathrooms for a living up until a few years ago, so I have tiled many floors and walls but never had to deal with lime plaster before.

All advice gratefully received.

Cheers!
Really you are overthinking it !lime was used to allow buildings to breath !! But that was before double glazing !hope you don't have those ! And it was used in plaster and brickwork etc !but if those areas are attacked by weather or water especially !it gets washed out over time ! Hopefully the outside of your house is not painted either !and your air bricks still all working and all dpcs are not bridged and still working !! End of the day just tile it and keep room ventilated , look after areas that water is near ! You essentially want to cover a breathable new plaster with a non breathable surface !do it right you be OK
 
OP
D
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Really you are overthinking it !lime was used to allow buildings to breath !! But that was before double glazing !hope you don't have those ! And it was used in plaster and brickwork etc !but if those areas are attacked by weather or water especially !it gets washed out over time ! Hopefully the outside of your house is not painted either !and your air bricks still all working and all dpcs are not bridged and still working !! End of the day just tile it and keep room ventilated , look after areas that water is near ! You essentially want to cover a breathable new plaster with a non breathable surface !do it right you be OK
Thanks Kevbos
All tiled now and waiting to grout. I appreciate your reply and glad to hear that I was over thinking it. I do tend to do that sometimes... 😉
 

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