Lead flashing over existing cement

Hi - the existing cement flashing has failed around a chimney breast, cracks have opened up over time. Is it ok to put new lead flashing over the existing cement or do you have to remove cement first?
Thanks

Asked by Simon on 29th Dec 2025
Expert Trade Answers
"Cement needs removing first before installing flashing or new cement haunch"
Answered on 29th Dec 2025 - Member since Dec 2025 - report
"Hi . Ideally you would remove the cement fillet so that the new lead flashing sits properly. Although I have seen it put over the cement fillet before but I would recommend removing it if possible and not to difficult"
Answered on 29th Dec 2025 - Member since Jan 2024 - report
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