Re: construction adhesive on walls and ceiling
I would remove the wall covering to studs and drywall it. The tar adhesive was probably to put up cheap plastic tiles but that's a guess. Once it's there it's always there, there is no cheap and easy way to remove it. But, removing everything to studs and applying drywall always works and is a reliable and reasonably affordable approach.
The best other choice would be to apply drywall over what's there and applying it to lathe/plaster walls isn't much different from a normal application; the walls are just thicker and you need to find out where your studs are. Yet, on the other hand, it applies a layer over a bad job which, I think is always a bad idea.
If I only knew what I was doing!