Lead flashing issue

[ems_eminems]

Hello,

I'd be grateful for your thoughts on issues with this lead valley around a dormer and rough ideas on costs involved to fix it. Water is getting through and staining the wall internally about half way down the dormer.

Other info: Valley measurements: 2m long, ~4in wide central channel, ~ 12in total lead sheet width (includes 1" welts)

Thank you for any help/advice you give.

Any recommendations of roofers good with lead in Wiltshire/Somerset much appreciated.

 

[datarebal]

Check the hip mitre

 

[ems_eminems]

Check the hip mitre

Will do - any ideas on rough cost to redo such a stretch of lead?