Hello,
I have just bought a narrow boat with a woodburner which needs repairing - the chimney is loose; it's attached to the collar, but the collar is not attached to the stove top. The whole thing can be lifted clear. I don't have any photos I'm afraid.
I thought it was just a case of rejoining it with fire cement, but now I think it's a bigger job than I originally thought! I've tried googling to find out how to fix this, but with no joy. Any advice much appreciated :)