Somewhere i worked had that. (Edit: but more for privacy)
It was so funny seeing passerbys using it as a mirror.
Absolutly funny 10/10

I did this at my last House and it was fantastic.

Just need to remember that once it's dark outside the reflective side "switches" and everyone can see clearly into the house.

Probably you mean 85% of infrared, not 85 parts per thousand (or 8.5%) of ultraviolet?

Window film is so glorious. I have my bedroom windows blacked out with it, easier to sleep, and yes, always cool temperatures in there.

I added these last summer too. Roughly a hundred bucks to cover three patio sliding doors. Huge difference.

How easy are they to cut to size, or if you need to use multiple to cover a window how does the gap/seam look? Have been thinking of getting them, but we also want to replace our windows at some point. I assume you can't just reuse them?

Are you using these on double glazed windows? I've read this film could get them to crack under the heat.