Hi guys a few updates on this one. They attempted the repairs with the roofer 15th December. What they advised they had done:
- Checked the gutted and confirmed all was sealed and the issue was not with the box gutter
- Raised the felt along the wall to catch any run off.
- Covered and sealed the verge
They where pretty confident this would resolve the issue so I waited keeping a close eye on it and preyed for the next heavy downpour.
So Christmas eve had a long downpour and low and behold the damp returned no different to the last downpour:
Then new years eve it chucked it down......
So spoke to them when they got back to work in Jan after sending over all the pictures and they advised they would be back with the roofer and 2 of their guys to "get it sorted". Zero confidence though from all the messing so far. What they have found and repaired is on the original extension roof the sarking felt had sank from about half way down the roof and water was collecting in that bottom corner of that roof and running down the wall. There are the pictures they sent me:
This was the felt sagging and not fitted correctly:
You can see here the felt is wet where the water was collecting:
So the only place the water had to go was that problem corner off that felt and this was evident when the felt was removed with the wet timber:
So the felt was extended all the way down that verge:
Any lead added along the bottom edge of the tiles dressed over into the gutter:
The plastic from inside the conservatory around the box gutter was removed and confirmed dry so confirmed box gutted was not the issue again.
To be fair they have eventually done an extensive job to "hopefully" resolve this. From the pictures it seems this is what was causing the issue but I suppose time will tell.