Self level and liquid DPM

[markypays]

Hello,

I've just ripped up about 20m square of cork floor tiles in my lower ground floor. If I never see a cork tile again it will be too soon! Some of the floor tiles smelt a bit damp and I've found a few slightly damp areas on the floor so suspect the original sub-floor (looks like a sand and cement screed) DPC has failed in places, or may even be entirely absent. I'm fitting an engineered wood floor and have two problems: 1) the floor needs levelling for the floating wood floor and; 2) it's a bit damp in a couple of places.

Now exposed, the sub floor has dried well but once covered again no doubt damp will creep back in places.

Any suggestions on what sort of levelling compound to use and what, if any, liquid DPM? I've had a suggestion of a couple coats of black jack before levelling but wasn't sure how well the self level would bond to black jack. Had been advised that water based self level was easiest to spread and work but didn't like any residual damp hence to DPC first.

Anyone had any experience of this sort of situation?

Thanks, Mark

 

[Norcon]

Aquatek elastic 2C might do what you want...
http://www.sdg.ie/Structural-Waterproofing/Cementitious-Waterproofing/Aquatek-Elastic-2C

They also do liquid waterproof membranes. Straight pour on or two pack.
Have used their bitusheet on retaining wall structures but can be used on horizontal areas also, which is what I think is in the image on the link.
Excellent stuff I might add.