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Chimneys & Fireplaces
Stains on internal chimney breast
I have a 3 storey brick cavity house built in 1880.
Two internal chimney breasts on the top floor and the 1st floor bedrooms keep staining.
I dont think it is damp, because it is dry to the touch and the lining paper hasnt peeled.
It is almost as if it is a chimical reaction to soot or possibly hygroscopic salt.
There are no cowels fitted, and the pointing is in reasonably god condition, as are the lead flashings.
Need some help please.
1 Answer from a MyBuilder Chimney & Fireplace Specialist
Hi it sounds like your chimney is sweating. This is usually caused through years of burning wood. I would suggest installing flue pepperpots to the chimney and fit 2 vents to the internal chimney breasts. This would be the best option to try before getting into costly repairs
Answered 5th May 2015
