What tile adhesive is used for large format tiles?

[stevep1]

the first room came off after a week . since the i've been sticking test tiles in various houses in various ways one morning and removing them the next day. and they come off as if i have leant them against the wall with nothing on the back. (sorry for being a dick earlier) i am a very conscientious and proud tiler who does his absolute best on every job.

 

[DHTiling]

Steve try a new method for me please..

Serrate the wall as usual and then with the flat side of your trowel. light skim the tile back and affix the tile in situ.. this will create a very strong bond..

 

[stevep1]

agreed but with tiles a meter long and walls far from flat and a client who wants tiny joints with no lips at all i'm gonna end up having to pack them out. the suction effect isn't going to always be viable. i always do skim the back of every large tile anyway. on a window sill in the first bathroom i spread the sill 6mm trowel and banged down marle mosaic. when i pulled them up after a week they came up with all the addy leaving the sill spotless. that was a benfer flex on primed sill. did't leave a mark.

 

[DHTiling]

Is it worth switching adhesives then..

I use Mapei Keraflex maxi and it grabs like a sex starved maniac..:lol:

 

[White Room]

Has the plaster been so highly polished allowing no suction to break thru the glaze

 

[stevep1]

lol. i've tried 4 makes now. bal,benfer,weber,palace. not mapei yet. worth a go. starting to lose the plot. like i said never had a problem with any of these makes before. have spoke to people who have been tiling alot longer than me who wouldn't use anything else. priced two jobs today foung myself asking the woman what make of plaster she had on the walls. she looked at me like i had two heads . amazing how a knock back can dent your confidence

 

[stevep1]

it might be the plaster.part of one wall had a mist coat which i primed and tiled over. when the tiles pulled off the mist coat came off the wall too. clean off. doesn't look like anything wants to stick to this plaster.

 

[Aston]

i know its the plaster and it will stick if sealed correctly...

seal coat leave over night
sbr, higher ration , leave a while then tile..

 

[DHTiling]

it might be the plaster.part of one wall had a mist coat which i primed and tiled over. when the tiles pulled off the mist coat came off the wall too. clean off. doesn't look like anything wants to stick to this plaster.

AHH!! Contamination...... sticking to emulsion is a no no..

 

[stevep1]

yeah i know . that doesn,t explain the other 95 % of the walls. if it's the plaster what's the next step. or do i keep trying adhesive til i get one to stick.

 

[DHTiling]

Not really...

Is the plaster polished,,? does the primer skin..

 

[stevep1]

the neat one definately did. like peeling sun burn. not the other coats though.

 

[White Room]

If the mist coat was'nt sticking to the walls as my previous post the plaster maybe over polished, even a mist coat won't soak into over troweled walls

 

[stevep1]

trouble is we electric sanded one wall to rough it up incase it was over polished. then tested on that every day along with the others.

 

[DHTiling]

Steve..

When priming try a 4:1 coat... priming to neat can cause it too skin.. watered down coats work better