I have lined velvet curtains in thelounge. I close them whenit gets dark to keepthe heat in.
I have blinds and lined curtains inthe bedroom I sleep in.Again I close thyem when it gets dark tokeep the heat in. Same at the front even though
the bed is not used.
Have curtains in the box rom which I use as an office. But they are never closed as I like to look out of the window even when it is dark.