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There are 3 main types: Overhead, Lateral & Rising.
Overhead Damp Remedy: Check and repair lead valley gutte, box valley gutter, tiles or slates, flashings, gutters & downpipes.
Lateral Damp Remedy: Repoint external wall. Rerender. Check window frames where they meet reveal. Replaster internally forming vertical damp proof membrane.
Rising Damp Remedy: Cut back plaster up to 1 metre minimum. Drill & inject damp proof course. Replaster.
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