Do you mean is there or that it may potentially be the cause? Property is over 100 years old. Attic conversion left the chimney breast bricks exposed with gable wall boarded across.
Could anyone please advise what is causing this damp patch please? Chimney was repointed, flaunching checked and flashing repaired a few years ago. Pepperpot cowls were fitted this summer. Chimney has not been used in a decade. It dries in good weather but the recent heavy rains have resulted...