self leveller

[crabman1]

Hi, can anyone tell me if it is O.K to lay self leveller directly on to a concrete slap or should I PVA it first to give a key for the self leveller, bathroom floor is way out of level and the original builder laid the conk so high without a cement screed then put tiles on top (uneven) I have lifted them and I am going to lay new tiles on top of the self leveller got between 5mm and 10mm to put down to get it level

crabby

 

[crazydaze]

Ideally, a primer matched to the screed you are using would be a sure fire way of ensuring the screed bonds correctly (assuming moisture levels are ok in the floor of course).