This is a simple roman shade with blockout lining on the back. It will not let any light penetrate.
It was for a bedroom and sleeping during the day was a part of the request. "Can it be dark enough in here to sleep during the day?" questioned the homeowner. To that I replied, "Yes, it can be dark enough to sleep during the day!"
When the shade is in its most upright position, it is all tucked behind the valance at the top. Then there is plenty of sunshine. Responding to the homeowners special concern is what "custom window treatments" are all about. I enjoy knowing my client is happy and has exactly what they requested.