Tiling on celcon lightweight blocks.

[easyt]

I am making a shower plinth with celcon blocks This will be capped with ply to take the tray. I intend to tile flush to the underside of the tray on the plinth face. I will leave the plinth 9mm short of the edge of the shower base to allow tiles to be flush. Could I stick this row of tiles directly to the blocks or would I need to render.

 

[paul flight]

render would be best ! would not take to long to do and you will get a better fix . make sure you sbr prime the render .ok

 

[easyt]

I could easily render it but was concerned about the effects on the support at the edge of the tray. I suppose though render is supportive.

 

[paul flight]

thats right !!

 

[Scott]

Dot and dab a bit of plasterboard on to it

 

[White Room]

As above, I would dry line, those blocks can be weak and start cracking with very little movement

 

[pete f]

i have screwed and plugged hardibacker to it never had any probs

 

[david campbell]

those are thermolight block and would probably dry the adhesive out to quickly

 

[easyt]

I think you are right David. When I laid them as a base i brushed plenty of water on first. I have set them back to allow me to get a 6mm board on.

Easy T

 

[paul flight]

dont use plaster board any where near a shower base . if water gets to it the tiles will let go as it is not water proof. use backer board if you are going to line it