Consider hanging up blackout drapes.
How to stop light coming through blinds.
Visit your local home goods store for blackout blinds which help prevent any light from entering the room.
Another problem is that these will only work if they are sitting flush with your blinds.
Purchase blinds that are 1 2 in 1 3 cm or so smaller than the width of your window but long enough to cover the entire window.
In the window treatment world if the light is coming from the side of the window frame then we call them light gaps.
Keeping your blinds lower may not be the right solution to get relief from this problem.
Even after installing window blinds it can allow sunlight streams through the side of the blinds.
Install the blinds before adding anything else to your window like curtains.
If your blinds are even 0 5 cm from the strip light will leak through.
Install blackout blinds that are mounted to your windows.
In other words if you have blinds that are mounted a certain way or your window frame has molding that isn t completely flat from window to outer frame these are useless.
Roller shades naturally have large gaps to the sides of the fabric so these light blocking strips are the perfect solution for maximum light control.
If you have drapes or blinds that let sunlight through them you may want to replace them.
Next position the bracket first so that your curtains come up at least three inches above the top of your window and at least three inches from the sides of your windows as well and drill your brackets back in.