Hello,
just ripped up some flooring in the kitchen and discovered plastic mats with something black in/underneath.
We didn't install the flooring and it's probably been there for quite a while. The previous kitchen was installed in the 80s, and then a floor was laid to cover this.
I've attached pictures. It mostly looks like there is black in the actual mat, and then there's some brown/semi-transparent material laid in strands, but I could be wrong.
I've removed a little bit and put it in plastic bags, and I'm considering submitting it for testing, but 1500 krona for express testing could be spent on something more fun.
Thanks in advance!