Hi everyone. I'm sending this post to get some ideas as to why water runs down a corner of my conservatory when it rains, because I am now completely out of ideas. We moved in only a few months ago so I don't know the history; who constructed it etc. The house is 1980s construction so has cavity walls. I've included as many photos at possible.
So here are some details:
So here are some details:
- The leak appears to come partly from the very top corner of the conservatory where the ceiling and the exterior wall of the house and the west-facing conservatory wall all meet, but it appears that substantially more water seems to run in by the top of the door frame (hard to say for sure). Curiously the masonry wall also seems to have a few small damp patches some distance away from the corner.
- The conservatory has a polycarbonate (i think) roof, which is pitched down from an exterior north-facing wall of the house. There are no other leaks.
- It has lead flashing which is cut into the rendering/brickwork (i think) and looks reasonable, as far as i can tell.
- Leaking only really seems to occurs in driving rain. The conservatory wall where the door is is west-facing (more or less) so gets more than its fair share of driving rain here in Devon.
- I have slightly lifted the lead flashing directly above where the leak is coming from; removed a lot of grotty perished sealant; applied roof seal and bent it back down again. Then using roof seal I've completely filled the gap underneath the edge of the flashing so no wind/rain can blow under the flashing.
- I've painted roof seal on various exterior edges on the roof above the leak such as where the flashing meets the masonry (which you can see in grey on one of the images).
- Using roof seal I've painted all the way down the exterior edge where the conservatory wall meets the masonry wall. (There was already a seal here of course which i have just gone over).
- I've squeezed beads of all-weather sealant along between the uPVC panels on the outside of the conservatory wall so that the run-off down the conservatory wall doesn't get inside the panels.