Damp Proof High Build Self Leveller

[dunny]

Hi all,

I have old quarry tiles down most of which is covered by bitumen/asphalt at about 30mm depth. Since I have just removed the stairs I need a high build self leveller to cover where the stairs used to be (they were sat directly on top of the old quarries). Can anyone recommend a self leveller that will build to circa 40mm and is damp resistant / damp proof?

If there isn't a damp proof self leveller can normal self leveller be laid over liquid DPM?

Or, could I tank over the quarries first maybe?

Thanks

D

 

[dazlight]

Fill up with ardex NA and granno
then ardex DPM1c
then top off with ardex NA again