So what is the best solution to creating a dark bedroom?
There are a couple of options to consider. Firstly, look at layering window dressings. Having a blind made from a blackout fabric fitted within the recess and a pair of blackout curtains covering the window is certainly one of the better ways to block out light.
Alternatively, you could have a roller blind fitted inside the recess with ‘side channels’ fitted to the side walls. This allows the blind to go up and down within the frame and covers up the light gaps at the sides. Not the most attractive solution and a little reminiscent of school science classrooms, but if you’re really serious about darkness, then this will do it!
Personally, I prefer the layered option, in my own bedroom I have blackout roman blinds and Wave curtains on a track that is fitted to the ceiling which does provide total darkness, and since I couldn’t decide between two fabrics I liked for the bedroom, it solved that problem too as I used both!