Shutters offer excellent light control, although they may not provide complete blackout capabilities. When it comes to blocking out light, shutters can be rated at 4 out of 5 stars on a scale of effectiveness. The solid louvers play a significant role in minimizing the amount of light that enters a room. However, it’s important to note that there may be some minimal light leakage between the individual louvers and along the edges where the wood stile meets each louver.
While shutters can significantly darken a room, they may not achieve complete darkness, especially in situations where absolute blackout is required, such as for home theaters or bedrooms. If total darkness is a priority, alternative window coverings like blackout curtains or shades specifically designed for light blocking may be more suitable.