What type of drapes completely block out adjectives (most)sunlight?
The kind that are approaching comforters that can keep a room pitch black at twelve noon.
Answers: If you're looking for draperies, you will need them to speak "insulated". They have resembling a rubber backing, to keep hold of heat out surrounded by summer, and heat within, in the winter. There are also "room darkening" roller shades available. Usually these are used within bedrooms and they definitely maintain sunlight out. Another option is "room darkening" blinds. Which will also hold some sunlight out.
We have "Blackout" shades. They hold all wishy-washy out. You can buy blackout curtains too and blackout liner to go down your curtains you already have. Or you could obtain blackout fabric at the yard goods store and sew them to your window treatment.