Have been investigating leak on my 3 season room. Not certain it is related to this finding but discovered flashing around my chimney in an interesting state.
Big gap in corner and also the epoxy/sealant that the flashing was pushed against at the top of the flashing was not sealed/tight anymore (suspect water was getting under/behind it) - I caulked this up. Peeking inside of this gap I can see a varied state of wood.
- Should I install some sort of kickout flashing?
- Can/Should I gap fill this with caulk/foam - we had yellow jackets in the wall on another side of the house we disposed of so I know they'll be looking for a new home this year.
Apologize that the last few images are bad, they're from a 3rd party app to use the cheap amazon boroscope.
Inside the gap