Adhesive advice

[urban]

Hey guys new member and already looking for advice. I recently tiled my bathroom floor and its now lifted again as the adhesive did not grab the floor (Chip board) nor the tiles Porcelin tiles. I used B&Q finest :mad2: Ultra bond rapid set. Now i have since lifted the tiles and put down some plywood so am looking for a recommedation on adhesive to use as i want this to be the last time doing the floor.

Any recommendations??

Thanks
Allan

 

[jay]

:welcome:what thickness ply

 

[urban]

It was 6mm

 

[Ian]

Welcome along. Sorry to throw another spanner into your dilemma but, a cement board would be a better choice for overboarding rather than ply, it is a much better surface to tile to. A deflection (bounce) free floor is essential for this to work so make sure your chipboard is well screwed down if you choose this route.

 

[Ian]

6mm ply is way too thin, 15mm is the British Standards minimum.

 

[White Room]

You would better off with 6mm hardie backer glued and screwed..

 

[jay]

as above the floor must be deflection free then 6mm cement sheet

 

[urban]

15mm ply plus adhesive and tile would take the floor level to around 25mm high. This is not an option as this would cause a small step that i would like to avoid. I have screwed the ply down at 250 mm intervals and feels firm. Would i be daft to continue to tile over this?

 

[White Room]

6mm ply has far to much flexibility in it...

 

[doug boardley]

yep, you'll get deflection and warpage with 6mm ply, use hardiebacker 250, as mentioned above, glued and screwed