If your damp is at floor level its more than likely a damp proof membrane problem , if it is 1st floor level it is more likely a masonry breakdown which will be a re-point or possibly some cracked brickwork allowing water to penetrate.
Fix the problem with moisture first ,then start with applying a damp sealer paint (Polycell One Coat Damp Seal) , after few hours ,top coat of (Dulux Bathroom Plus) paint . Regards.
Hi as regards your question on the damp walls you will need a damp and wet rot expert to attend and monitor the moisture and trace the source of the problem, check the rated people site as there is lots of good tradesmen on the list. Regards Graeme
Nick shares his story of finding local tradespeople in his new area.
