Sustainable Living: 3M FuturewiseTown PlanIntroductionGo BackGo Next: Inside the Green's family home3M

Inside the Green's family home

Back inside the Green's family home

2. Windows

Roof insulation 20 – 40% of a home's heat can be lost through
the windows, depending on the type of window.
A single-glazed window (with only one pane
of glass) can lose 14 times more heat than a
well-insulated wall. Double-glazing (two frames
of glass close together) can reduce the heat
lost through a window by 50% and new types
of glass continue to improve this figure.