Leave it for the tilers, let them sort it!!

[bugs183]

Trouble is Kia written disclaimers aren't worth the paper they are written on. Legally if you take any job on you have deemed it fit for usage and so you take responcibilty for your work, no matter how bad the situation. In the eyes of the law you're a professional, you've tiled it, your responcibility.
Good eh!!

 

[DHTiling]

Just point the builder to BS5385 spec for substrate preparation and suitability for tiling... 3mm deviation over a 2mtr straight edge , this is either a dip of hump..

Stand you ground and insist the substrate is flat for tiling ...

A question though ... what wet system heating is it that requires boards to screed floor.. ?

 

[m3fitter]

Norcross leveller and rapid together.. are they having a laugh, will the tiles level themselves, also grey leveller and rapid set with limestone...... hmmmmmm i don't think so.. the adhesive will grin through at some stage..
its all wrong, the timing, the teqnique.. its a rush job. stay clear..

 

[Diamond Pool Finishers]

The Norcross leveller and rapid together, sounds to me like a builders pork pie here , as i cant for the life of me see a tech-dept saying this !!.......