Flat roof meets pitched roof

SallyG

My kitchen extension is half flat roof /half pitched tiled roof.
I've had the flat roof re-felted because the old felting was beginning to break up .
Since re-felting there's a new gulley where the flat roof abuts the sloping tiled roof - previously the tiles on the pitched roof covered the join and water from the pitched roof ran on to the flat roof and safely into guttering - now rainwater is running through this gulley and then via a newly created "notch" in the side edge of the flat roof and soaking the sandstone house wall below.
This never happened before the flat roof was re-felted.
The roofer's coming to explain how/why he "had" to do this.
Should a roofer repair a roof in such a way that water runs down the wall below the roof?

anotherbaldrick

Well, what do you think ?

SallyG

I agree no-one would accept it ....but when the roofer rang he sounded as though he's going to try to justify it - I can't find the internal complaints procedure on the company website - it's a FMB accredited specialist roofing company - FMB complaints procedure involves an independent inspector at my expense @£110 an hour?

SallyG

According to the roofer it's bad practice to put the bottom edge of roof tiles directly onto the roofing felt of a flat roof because the felt expands and contracts and would eventually be damaged by the edge of the tiles.
The roof felt he was replacing had had concrete tile edges firmly planted on it since 1988 and hadn't leaked - the wooden structure of the flat roof was dry as snuff.
When putting back the existing tiles he therefore had to make sure the edges of the tiles weren't touching the roof felt but he didn't deal with the gap in the defences left by moving the roof tiles - has now filled it with some lead gubbins.