For Karl, I live in the new build the same way I lived in my old home for over 50yrs, never had mould there, keep house well heated, not uncomfortably so, plenty of ventilation, don't air clothes - have a garden, clothes line and in winter, if necessary, I dry clothes in dryer,not on rads, the problem was in the attic because while the materials were paid for etc., seems some of the labourers may have left a few rolls of insulation in the back of their vans, now I wouldn't accuse them of that, but on paper, the house was a good energy rating home, but in reality, there was not enough insulation, beams in the attic were damp and on down to the house, therefore the dehumidifier was a waste of money, the apartment is my own, I am not renting from anyone, downsizing - modern buildings tsk, give me the older builds anyday