I want to shade my windows on the north side of the house with awnings. I understand that you can have these retractable and motorised etc with sensors, but that seems an expensive solution and will need maintenance. Is it possible to make the awnings of glass with photo-grey coating like spectacles that will stop the light on bright days, but not at night or on dull days. If this is the case, what sort of glass do I need, and where do I get it?
Thanks