How about someone demonstrating how to fit a roller blind that isn't an exact fit? i.e. - 61cm blind in a 68cm recess? These videos are always so perfect and houses aren't. Too much emphasis on the ruddy safety feature.
Could someone design a blackout blind that actually blocks out all the light. Most let in light around the edges. I simply can't sleep beyond sunrise if the room is not vertually totally dark. As a consequence I made my own blackout blinds for this. Problem is they only fit the window I made it for.
I visited Germany and they had some blinds like you've described. I have no idea how to find them though. When they were closed it might as well have been midnight.
