.When i came home there was some white furry mould growing on part of the kitchen wall at about waist height. The house is double glazed and the heating was left to come on at 10 degrees,None of the windows were left open so the place was sealed.I washed the stuff off with dilute bleach solution , but wonder how I can stop this happening next time I go away.I have no rising damp. all damp coursed three years ago.