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I had an extension done and gutted out one section to create an open plan living area.

The chimney breast was removed from the bottom and still beams were put in to hold up the chimney above the roofline.

I have had water ingress in. Builders are saying I need to repoin t the chimney and add a missing cowl.

I argued it was the lead work and after 10 months they came back and fixed that section. Yesterdays storm has now seen more water come through. I still think it is leadweok and will try post photos. It runs straight down the face of the chimney, through the roof and straight down to exposed brick.

   


So water is running straight down the face of that directly to the ceiling line enternally.

Does the lead work look correct to you?

Was this during the strong wind we've had over the last few days?  Could it be that the wind is blowing water underneath the flashing?

thescruff wrote on Jan 23^rd, 2021, 11:20am:

This is the only photo I have from the builder. There had been water coming straight through to the right. They fixed the lead work there and that stopped.

I would fix the cowl but they have quoted me £3000 to set up scaffolding and repoint the top half of the chimney which  they say they cant get to.

I'm reluctant to go by the builders assessment. This is the second time they have rebuilt my extension, after messing it up completely and solicitors were involved to get the original knocked down and redone. They have consistently blamed the chimney for any water ingress, but prior to them turning up onsite I've never had any issue
. And my neighbour whom I share this chimney with does not have any water issues either.

My theory is if fixing the lead work to the right rectified the first lead then if it is 30 cm from the last leak, then again it should be lead work issue again.

Strong wind can blow rainwater up under tiles if it blowing hard enough in exactly the right direction