Yes, you would be able to see out of the window during the day. During the day from the outside it will have a mirrored effect and at night from the outside you will be able to see in. During the day from the inside you will be able to out and at night you will get the mirrored effect. I hope this helps.

Yes, this product will reduce the amount of heat coming into the house from the sun by about 84%. I hope this helps.

As per the instructions below is where you cannot apply the film.
Do not apply GILA residential films to plastic or Plexiglas surfaces or to motor vehicle windows.
Do not apply any film to frosted, etched, leaded, cracked, holed, or deeply scratched glass, or any otherwise flawed or defective glass or glass that is over 40 years old.
I hope this helps.

No, this cannot be used outdoors, it is really intended for indoor use, and would not hold up very well in the elements. Hope this helps.