Hi all,
Last year I had a damp patch in an upstairs back wall just below the height at which the back addition joins the main house. I got a roofer in and he replaced a few cracked tiles and some rotted felt which seemed to fix the problem.
Now I have 2 damp patches in a downstairs party wall which get noticeably worse when it rains. could the two be connected? The roofer having fixed one problem and then the incoming water being 'diverted' to another wall? The neighbours have no damp at all on their side of the party wall.
As can be seen from the pictures below, the damp patches start approx 1M up from floor level and are separated by the width of (what used to be) the chimney breast. Someone mentioned to me that it might be 'rising damp'. Would this be a possibility given that the dampness is much worse when it rains?
One other contributory factor could be that there is a leak in the pressurised hot water system. I know this because I have to recharge the system from time to time.
Last year I had a damp patch in an upstairs back wall just below the height at which the back addition joins the main house. I got a roofer in and he replaced a few cracked tiles and some rotted felt which seemed to fix the problem.
Now I have 2 damp patches in a downstairs party wall which get noticeably worse when it rains. could the two be connected? The roofer having fixed one problem and then the incoming water being 'diverted' to another wall? The neighbours have no damp at all on their side of the party wall.
As can be seen from the pictures below, the damp patches start approx 1M up from floor level and are separated by the width of (what used to be) the chimney breast. Someone mentioned to me that it might be 'rising damp'. Would this be a possibility given that the dampness is much worse when it rains?
One other contributory factor could be that there is a leak in the pressurised hot water system. I know this because I have to recharge the system from time to time.