Looks like chipboard but not sure on the green part Is this a domestic or commercial job Hav you pics a but further away to see the room
Looks like chipboard but it is not, it’s a domestic job 1970s house, my boss reckoned it was some sort of fire board that they use for walls but I’m not so sure it is ! Stuff came up easy of the floor boards but rest of the room is concrete and it’s stuck like shit !