Floor Insulation / Liquid DPM ?

[Renovation]

I have just discovered that when my project's wooden floors were changed to concrete they didn't include a DPM.

The current floors are parquet and granite tiles - however I've also removed walls etc so it all needs a fair bit of work.

The parquet is rotten around the edges because the ground was also bridging the wall DPC (slate)

The bitumen the parquet is laid on it acting as a DPC and whilst I'd like to keep the parquet infilling and levels are against it.

Is there something that I could lay over it to act as a better DPM and add insulation to a damp slab ?

The previous owners had laid cork over it (long since removed) and then carpet - is there a better alternative ?

Ideally I'd like carpet in some areas and tiling in others but may have to compromise with laminate.

[wolfracesonic]

Something like this? Liquid d.p.m

[x 7usc]

Sika do a liquid dpm which is resin based as opposed to bitumen based, called sika bond, named like their adhesives, linky which you could use before tiling or using an engineered board.
If it were me and i wanted to use carpet, given the existing could possibly be damp i would lay a cheap, non cushioned vinyl first to any carpet areas.

[Renovation]

I'm aware of the liquid DPMs I was more wondering about using say 20mm celotex as the DPM and 18mm P5 on top

But I'm sure there's something that's thinner and better suited but no doubt more expensive.

Marmox ?

[B17NNS]

Renovation said:

I'm sure there's something that's thinner and better suited

There is. It's a product designed and perfectly suited to the job.

It's called a liquid DPM.

[Pheo]

The xps isn't permeable... Just sayin'.

[Renovation]

B17NNS said:

There is. It's a product designed and perfectly suited to the job.

It's called a liquid DPM.

You misread my post - I want an insulated solution

As celotex etc won't suck water through I'm unsure I even need a DPM but I'm certain I do need insulation.

[Renovation]

Pheo said:

The xps isn't permeable... Just sayin'.

Yes that's my thought too.

How long has your floor been down and what size tiles are you using ?

As all the posts I've read (been googling) say that the tiles / grout will crack.