Source of leak in roof

Question

We have a leak and invited a roofer to repair who quickly recommended changing the flashing around the chimney stack.  It has improved but continues to rain in but the roofer has advised he can't identify the source of the leak even though we have made some suggestions.  Should it be so hard to find? The leak is all around the stack.

Walter · Accepted Answer

Firstly strip back the tiles following the leak to find and fix or maybe if hes put code 4 lead down has he lead sealed it before and after dressing, lead beating placing, ect

Paul · Answer

Hi mate done loads of these it's your felt if you have felt. It's supposed to go up the chimney to the top of the lead. I no it's that. Cheers PG&SONS ROOFERS &Builders.

Colin · Answer

I’d strip back the tiles/slates around the stack to investigate

Stewart · Answer

No, go in the loft when it rains and see where it is coming in.
Then remove tiles from above that area and you should see the problem. 
Felt, lead, cement or cracked tiles.
However, if a tile is cracked the felt should protect you.

Ladislav · Answer

The bricks could be porous maybe the brick delaminated also I'd check the ridge and too slate if a slate roof

Louis · Answer

I would highly recommend getting another opinion and try to see if someone else can identify the problem as every roofer has different knowledge.

Patrick · Answer

Have you had a look at the chimney to see does it need repointing or maybe a new led on the bottom of the chimney stack

Gerard · Answer

It’s probably the membrane underneath the tiles around the chimney stack it’s probably deteriorated or not run up along the chimney stack enough

Isaac · Answer

When a leak is around a chimney some times if it’s not the led it can be the  sealant  Around the top of the flashing where it’s  wriggled into the Roughcaster no2 it could be the roughcast/render on the chimney may be cracked or boss

Philip · Answer

Check the chimney cap for a crack it only takes one crack up there to cause the whole stack to appear leaking

Source of leak in roof

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