Cape Town. It matters a lot... actually, imagine 5C or even 10C outside and that cold just coming straight through the windows. That means you'll be freezing in

Cape Town. It matters a lot... actually, imagine 5C or even 10C outside and that cold just coming straight through the windows. That means you'll be freezing inside. In summer it also seems to help. Yesterday was 36C here and we had 25C indoors, which would had been much worse if we didn't have roof insulation and double glazed windows.