A couple of rooms in my house have parquet wood floor tiles. The house was built in about 1980. A few of the tiles have lifted and become loose. I can quite easily remove them intact, but the back of the tiles and floor is covered in sticky black tar.
From a bit of research, I guess this was tar paper, used to fix the tiles. Out of interested, what would normally cause it to come loose like that?
I found quite a lot of articles online about removing this stuff when you want to have a clear floor surface, but what I want to is to stick the tiles back down. Should I try heating the tar - perhaps with a heat gun - and replacing the tiles? Or should I try a new adhesive? If so what, and will I need to remove the tar before using it?