

Did we mess up?
Siigghhh. Started doing reno on a flat from late 60s early 70s (SE england), we were asked to prep the floor so contractor could lay new flooring. Started ripping it all up, layer of carpet, layer of underlay, then under that some sort of burlap material on top of a yellow foam. Foam was disintegrating so we pulled it up/scraped it to get to the concrete subfloor. Not sure when (if ever) the floor had been last done. The carpet on top looked somewhat new but obviously the layer underneath was crumbling to pieces.
I became a bit worried about the glue having asbestos in about halfway through, for the first room there didn't seem to be any sign of black mastic or anything, but by the time we got into the hall there were dark grey swirled patches.
We were wearing masks and goggles and the asbestos survey for our building didn't mention the floors having asbestos in, although it did say it was in the artex ceiling, areas in the laundry and around some heating pipes in the basement and roof (now realising this might have just been communal areas tested and the floors weren't the same as the one in our flat)...
Did we mess up