Most leaks around chimneys, dormers and valleys come from worn or badly fitted lead. We replace it to the Lead Sheet Training Academy's guidance, in the right code and the right lengths.
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We use code 4 lead for most flashings and soakers and code 5 for valleys and gutters. Each piece is cut and dressed on the roof, fixed into the brick joints with lead wedges and pointed with sealant designed for lead.
Lead is kept in lengths of no more than 1.5 metres so it can expand and contract without splitting. We treat new lead with patination oil to stop it staining the tiles.
Code 4 for flashings, code 5 for valleys and gutters.
So the lead can move without cracking.
Stops white run-off staining the roof.

Bovingdon
A damp patch on a bedroom chimney breast was traced to cracked mortar fillets around the stack. We replaced them with code 4 lead flashing and soakers in a single day.
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That usually points to worn flashing or a gap where the lead meets the brick. Driven rain gets behind it. We will check and photograph it.
It can be. Where theft is a risk, we can use a lead alternative that looks similar and has no scrap value.
Call the office, or send a few details and a photo of the roof and we will call you back to arrange a survey.
01632 960 643We reply within one working hour, Monday to Saturday.
Monday to Friday 7:30–17:30
Saturday 8:00–12:00