Can anyone help. We have a garage that was converted about 22 years ago before we moved in. The room is cold in winter. The one external wall is 17ft by 8ft and the gap between the plasterboard and single brick wall is 220mm. Because of a wooden floor and general decoration in the room I am pondering on fitting celotex in the gap. Coud I mix celotex with space blankets? do I need to worry about condensation? as i am an amateur can anyone suggest what i need to do from start to finish in laymans terms? Many thanks. John
