Hi,
What would be the best way to repair a leak at the party wall from front of chimney breast to property front? The copper and lead flat roof is mine and seems sound. The chimney and ridged roof is the neighbours.
Images here:
https://ibb.co/LYswRV3
https://ibb.co/QFMQFmn
https://ibb.co/64JpNQ5
https://ibb.co/vhMPmfz
Thanks
Benjamin