A real theater room inside your home is a great privilege that few of us are lucky enough to have.
I myself love watching a good movie because they can teach you lessons about life that others have learned the hard way.
For this reason, your home theater room should be completely dark and comfortable. There should be no light from the outside. To accomplish this, I recommend blackout shades. This type of window shade will not allow any light through the fabric portion.
Combine this with fascia and side channel guides and you get a complete blackout effect.
After all, your theater room should be free of distractions and a place where you can go to relax and unwind after a long day of work or what not.
Blackout curtains are also great for this purpose.
They look great and will not allow any light inside. You can go online and buy these window treatments like these wood blinds or blinds for sliding glass doors. Or you can get solar screens like these room darkening shades or electric blinds. Matter of fact you can get window shades like these roman blinds or bamboo shades. Combine this total darkness with a nice movie and you get the movie theater experience from the comfort of your own home. This is great if you have kids especially.