What is my floor type? (Sound insulation)

Albermarle

SpikeyKitten said:

plumb1_2 said:

Going off what I find in flats, it’s generally a screed, and the black is usually adhesive for vinyl tiles
A good quality underlay and a cheaper carpet is always better than poor underlay and good quality carpet 

But could have concrete slab, then fire proof slabs, then green chipboard, then adhesive and tiles.
The only way to find out is drill a core hole 

Funnily enough, there is a little hole in the floor at the edge where it looks like it's been drilled. I can see that below the black tile adhesive seems to be a kind of cement, then beyond that I can't see any further.

Good tip about the carpet/underlay.

I already have this which was going cheap locally. Is it considered to be of good quality? I bought it primarily because of the thickness. 12mm-15mm by the look of it.

That should be fine for a lounge or bedroom, quite soft underfoot with good heat and sound insulation properties.
It is not recommended for stairs/landings/hallways, as something slightly thinner and denser would be better, and also easier to fit on stairs.