anyway, removing this will be quite a chore and once off, the walls will not be usable for anything else. The resins, glue, and bits of cork will render the wall useless.
You will need to re drywall the walls with 1/4 inch rock and start over.
Then, you cannot paper over this nor paint over it. You could do this which I am seeing more and more these days.
Get a 1/4 inch ply wood and fasten some foam backing to it then stretch fabric over this and then tack this to the walls and you have one suggestion for a fix. This can be made to look nice.
No other suggestions.
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