I have a problem with a damp brown patch round an unused chimney in an upstairs bedroom. The flashing has been checked and renewed, there are no broken tiles and the chimney pots have been fitted with cowls.
However the brown stain is still spreading, another roofer has had a check and reckons the problem is the chimney sweating and it's because the previous guy installed gas cowls:
View media item 81288
He wants to put in some proper cowls that will help prevent the chimney sweating - does this sound right?
However the brown stain is still spreading, another roofer has had a check and reckons the problem is the chimney sweating and it's because the previous guy installed gas cowls:
View media item 81288
He wants to put in some proper cowls that will help prevent the chimney sweating - does this sound right?