Windows & Glazing

Within an insulation strategy, windows are the element where the least thermal resistance is achievable and the trade-offs are sharpest: they must balance heat loss, solar gain, daylight and ventilation all at once, and you cannot insulate them to wall standards while keeping them transparent. This closing element lesson covers why windows are the weak point, the levers that improve them, and the low-disruption route for heritage buildings. The buildings-and-envelope course covers glazing performance in full; here the focus is where glazing fits within an insulation strategy.