I have an old property 1892 with English garden wall bond brick work, the outside is rendered and masonary painted. Inside I have damp from 43 inches upwards for about two foot then the wall is dry again, I have removed blown plaster revealing brick work, at each row of headers a tape can be inserted 8 inches. Below 43 inches the wall appears to be covered in concrete prior to a layer of plaster, this part of the wall does not appear damp, so I have not removed it. Any advise on how to treat the damp, and is the concrete a form of damp proofing?
Sounds like rising damp to me, i had my place treated and i thought it was rising damp but luckily it was not. The system i had put in helped with the condensation i had in my walls and its gone away now, think it treats rising damp too so hopefully if it ever comes through i will be ok.
Its highly unlikely to be rising damp,not at that height, and located in 1 area.Tap the outside wall,if it sounds hollow then it need replacing,also check for external cracking,Its penitrating through from somewhere and is finding its way through the wall. Once you have found the culprit then you can repair the internal wall,otherwise you will be repairing the same area year after year. Use limelight plaster internally for the repair,once you have sorted the exterior.
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