Quote:
Originally Posted by Exalta-STA
Unfortunately it is always damp there and now some parts of the gypsum ceiling fell...
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You now have a liability...
In my opinion, none of the solutions you have suggested would make your basement suitable for human habitation.
The level of moisture that would make sheet rock disintegrate is so high that your basement room will quickly become a mold garden for anything organic that you put in it. From your photos, I can see mold growing on the paper that covers the gypsum ceiling. The mold spores can certainly do permanent damage to the respiratory system of anyone who occupies that space.
It might be possible to build a completely non-organic air-proof and water-proof envelope for that space and also run a dehumidifier and ventilator and run a HEPA air filter all the time.
On the other hand, you could turn your liability into an asset...
You could grow delicious mushrooms to sell to local restaurants.
Best,
-AC