chimney problems please have a look

[craigers]

hi all i have a leaky chimney

chimney served 3 fires. one was vent type hole in kitchen wall, other was upstairs fire in bedroom which had been boarded over and i think the pot has a vented cowl on it, the last one served the back boiler in living room which i have removed and sealed. these other 2 tops just have a chimney liner. no pot no cowl

this is our bedroom ceiling below it. A day or so after it rains the ceiling gets wetter. which makes me think its wicking through the chimney

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• craigers
• 21 Feb 2010
• 1

now the pointing was really bad

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• craigers
• 21 Feb 2010
• 1

so i repointed the worst bits (but probably should re-do all of it) but the celing in bedroom still appeared wet

im no expert but the flashings seemed fine

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• craigers
• 21 Feb 2010
• 1

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• craigers
• 21 Feb 2010
• 1

but i put a bead of roof/gutter sealant around the top of flashings and down side so no water could get in, but still the ceiling gets wetter


1 pot had a cowl on it but the other 2 have just liners. i thought the rain was failling down chimney hitting internal bricks and soaking through. so i siliconed a couple bit of slate on top of them until i can get proper vendelated cowls. but still the ceiling gets wetter

this is inside my roof

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• craigers
• 21 Feb 2010
• 1

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• craigers
• 21 Feb 2010
• 1

as you can see i have a mould problem and the chimney is obviously very wet, mortar in joints is black?
this is the outside of roof, not sure the left half is black???

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• craigers
• 21 Feb 2010
• 1

my next step will be to re-do flouncing on top around pots and paint water seal on brickwork. only concern would be chimney cant dry out. any advice would be greatly appreciated

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• craigers
• 21 Feb 2010
• 1

 

[justlead1]

Hi. Other than spending a lot of money fitting a DPC tray. You may do best waiting for some fine weather and giving the chimney stack a few coats of sealant, it translucent and seals the brick work. I have made a small film to try and explain the need for DPC tray http://www.youtube.com/user/justlead1#p/u/2/AAdcYazFIio it may help in understanding the problem. I can not remember the name of the sealant product but i am sure someone else will put us straight. Good Luck

 

[tudorroofing]

From what I can see, you would benefit from pointing and leading the whole chimney.
Im not being rude, but slapping sealents everywhere is just a bodge waste of time, you dont want your battens and rafters getting in a worse condition than they already are or you will be looking at a re roof.