black sparkly quartz onto bumpy whites ?

[kev]

I'm about to tile a single wall the length of a bath up to the ceiling with 300 x 300 black gulfstone quartz tiles ... At present the wall is tiled with 200x250 bumpy whites .they are soundly fixed and its only going to take about 30 odd tiles to complete the job , question is do I definatly need to remove the bumpy whites, or will it be ok tiled over ? I'm using bal spf to fix them .

 

[Ian]

I personally wouldn't fix something that heavy over existing tiles, definitely remove them IMO.


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[White Room]

Same as, remove the existing tiles....

 

[cam_low]

as above. backerboard it out and fix tiles. jobs a goodn

 

[kev]

Just checked the wall and its an absolutly Solid built wall , and all the tiles are as firm as could be ...just seems like I'm making extra work for my self... The wall is in my own house so its not for a customer .

 

[White Room]

At the end of the day the choice is yours, what is the backing/substrate the existing tiles are fixed to.

 

[glasgow_tiler]

it one of those things tiling over tiles, if wall is solid then its up to you, i know loads of folk who do it and i have done it myself several times so choice is yours tbh,

 

[DHTiling]

You will be well exceeding weight limits and risk debonding.

 

[glasgow_tiler]

it one of those things tiling over tiles, if wall is solid then its up to you, i know loads of folk who do it and i have done it myself several times so choice is yours tbh,

just watch the weight of the tile as there pretty solid

 

[widler]

Some weight them tiles to a M2, take em off wouldnt want them landing on my head while im cleaning me bits !

 

[kev]

Ok I don't really understand the weight issues ... Well I kindda do , but surely the weight will be transfered directly downwards thus making it extremely unlikely if not impossible for them to.fail , please correct me if I'm wrong ... But has anyone ever seen this happen, because I just can't imagine.it could happen if the wall is perfectly uprite

 

[Peter]

6x6 white etc over well fixed tiles would probably be fine but 30kg/m quartz is a disaster waiting to happen.

 

[Martino]

Personally i have never seen a tile fall off a tile and as your grout line's are going to be all staggerd across the origionl ones, i cant see 1 tile falling off, the only way i can see a problem is it a while section fell at once! which happens when ur taking tile's off sometimes as its the grout holding them in place rather than the adhesive!