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Penetrating damp on internal adjoining wall
Anonymous user 23/02/2024 - 2.58 PM
Live in mid Victorian terrace and have discovered a damp patch on the downstairs wall that joins on to next house. It is half way up the wall but is dry above it and below it. Behind the wall is my neighbours chimney breast. He says he has no problems with damp. No signs of damp on the same wall upstairs. Is it likely to be from the roof or could there be another cause? I do not see any signs of rising damp. Floors feel dry and the cellar is dry. What should my next move be?
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2 Answers
J-C Roofing Services
Rating: 5 out of 5
Hi I'd have your chimney collar checked for cracking as water ingress can travel down the flue until it reaches the damper which in most cases when a redundant fireplace has been covered they are left in situ so the collection of soot and debris soaks up the water and slowly works its way through. If the chimney is not used have it capped.
Answered14 July 2015
1
Trident Damp
Rating: 5 out of 5
Hi There
This could be poor ventilation inside the chimney flue allowing moisture to condense internally and then coming through your side the chimney flues may need ventilation , it could also be that there are no cowlings on the exterior chimney pots these allow the chimney flues to breathe but stop the rain from entering the flues.
Regards
Joseph
Answered14 July 2015
1