Hi,
Last Spring I repointed some lead flashing, some parts had cracked other bits had fallen out. Looking at it yesterday I see that it already has fine cracks in it and some tiny bits are missing.
I see two possible reasons for this, it doesn't look as though the lead is very tight around the joint, it seems to have mostly cracked where the mortar meets the lead. Perhaps this is normal.
Also it is above a uPVC window which has no external lintel so there is slight movement in the brickwork. While repointing, some of bricks in the course above were ever so slightly loose so I took great care to fill every part of the joint with mortar.
I don't think raking it all out and starting again will solve anything, unless I re-did all the lead work, which maybe beyond my ability.
So what about using something like Ever Build lead mate?
https://www.everbuild.co.uk/product/lead-mate-sealant/
But instead of raking out just put a bead over the existing mortar all the way along. It says it's permanently flexible.
Good idea or not?
Or get a proper roofer in?
Thanks,
Bob
Last Spring I repointed some lead flashing, some parts had cracked other bits had fallen out. Looking at it yesterday I see that it already has fine cracks in it and some tiny bits are missing.
I see two possible reasons for this, it doesn't look as though the lead is very tight around the joint, it seems to have mostly cracked where the mortar meets the lead. Perhaps this is normal.
Also it is above a uPVC window which has no external lintel so there is slight movement in the brickwork. While repointing, some of bricks in the course above were ever so slightly loose so I took great care to fill every part of the joint with mortar.
I don't think raking it all out and starting again will solve anything, unless I re-did all the lead work, which maybe beyond my ability.
So what about using something like Ever Build lead mate?
https://www.everbuild.co.uk/product/lead-mate-sealant/
But instead of raking out just put a bead over the existing mortar all the way along. It says it's permanently flexible.
Good idea or not?
Or get a proper roofer in?
Thanks,
Bob