Laminate flooring on the concrete ground floor

[Deleted member 174758]

Should be OK then. The thing is, your laminate will need an expansion gap at the edges, so it shouldn't touch the walls in any case.

 

[SaudisLoveAudis]

Should be OK then. The thing is, your laminate will need an expansion gap at the edges, so it shouldn't touch the walls in any case.

yes, I will leave the gap.
Is the Sonic Gold a good idea as an underlay? So the cold radiates back to the ground and the warmth radiates back.

 

[SaudisLoveAudis]

We had some rain and the outside humidity is above 72% usually in the 80ties.
On a number of occasions I have checked the humidity at level of the concrete floor and even after some heavy rain it stays at 50%.
I believe that there is already a DPM under the concrete.

For comparison the humidity on the 1st floor is usually about 10% higher than downstairs!? I know there is a bathroom but it is not used that much.

 

[SaudisLoveAudis]

Anyway I am still looking for the right underlayment to put on the concrete.
I have 32mm gap between the concrete floor and doors. and 25mm in the other room (both concrete).

I reckon there is a DPM under the concrete at the humidity at ground level hasn't moved, it's still 50% but anyway most of these underlayment comes with DPM anyway.

I was looking into this:
3mm

Pro Gold Underlay Vapour Barrier

Buy the Pro Gold underlay vapour barrier underlay, used for laminate flooring.

www.factory-direct-flooring.co.uk

5mm Sonic Gold

Amazon.co.uk

6mm

Amazon.co.uk

10mm (I reckon this is only for the carpet not laminate)

Amazon.co.uk

I reckon there is no thicker underlayment for laminate than 5mm.
Sonic Gold has very good reviews.

I reckon I don't need wood fibre boards for this just the sonic gold.

Please let me know if there are any better options or if I am on the right track.

 

[Koolpc]

Damp not dump.