Hello,
We had to put a new base plate on one of our walls. When I tore it out to expose this, it turns out that the old interior wall and the old ceiling, which consists of paneling, were left behind the new wall and ceiling covering (gypsum). This seems to be a recurring theme for all rooms in our house from the late 1800s, as this was also present when I renovated the hallway.
This isn't really a problem until you have to start tearing into it. Now I have to tear out a part of it because I'm going to lay new floors and straighten it. To access the floor all the way in under the interior wall.
It's a big project to tear everything down and start from scratch, so to speak.
How would you have done it?
The old ceiling is sloping as the house has settled over the years, and I suppose that's what they wanted to cover with a new lower ceiling.