Hello, I'm moving my son into his new room soon, and want to be able to make it as dark as possible. My problem is the bedroom window is HUGE. We have blackout curtains and are looking to get a blackout blind. The width of the window is so long that I don't think we can use a roller blind that only fixes either end (I can just see it falling off because of the weight) So my next option is blackout vertical blind. However, from what I've read blackout vertical blinds let in loads of light still all around the edges. Anyone got any ideas or tips?? thanks
(I don't want to put up multiple roller blinds)