I live in a 70’s house that has had double glazing installed but little else in the way of thermal improvements since then. Imagine the following situation. Yesterday was a mild winter’s day, temperatures around 10°C, and I was comfortably warm working at home. Today the weather’s changed, it’s been cold all night and …

An extended version of this article appeared on UKclimbing in March 2017.   This summer we made a big move from Brussels to near Fort William on the west coast of Scotland. Moving away from the good transport links of a big city had us looking to buy our first family car to make the …