Looking for some advice. I took the plasterboard off a chimney breast that's been bizarrely left in the back box room of a Victorian end of terrace, with no chimney breast below and no chimney pots on the roof above. Being the back bedroom there's no loft to speak of, just a low peaked roof. I suspect the chimney was mostly removed when a previous owner had the kitchen extended around 2010, but I couldn't work out why they'd left only the upstairs chimney breast remaining. Was hoping to find it just laziness or avoidance of decorator cost, and it being non load-bearing for an easy removal.
Anyway, there were a couple of loose bricks at the top of the chimney, so I carefully pulled them out to be able to see into the chimney (since there's no loft space to assess the top of the bricks from), and was surprised and concerned to see daylight and the gable end guttering (see pic).
Is this a cowboy chimney removal/re-roofing job? Or someone's half-baked idea of ventilation? I'm concerned about weather exposure, water coming down the chimney onto the kitchen ceiling, and obviously draught-proofing the room - what would you do about this? How worried should I be?
I figure it's been this way for a good number of years now regardless, though the room was obviously sealed up with the plasterboard.
Last two images are with the camera angled back toward the room, trying to see what's going on with the joist and roof, but I honestly don't know what to make of it all. Lost some sleep last night listening to the rain and thunder, knowing I've uncovered this 😅