We would all like to live in a cosy, energy efficient home, but the reality is that this is out of reach for many New Zealanders, with a large proportion of housing being either inadequately insulated or not insulated at all.

This is a serious concern, since the World Health Organisation recommends that homes be heated to a minimum of 18°C with serious health implications if the temperature drops below 16°C.

As an undergraduate, I recall remember many flats, including my own, adopting stric