Does anyone know if there's a glass frosting type film that can be used on glass outside? We've got a lovely balcony with glass walls. We're 1st floor and our flat overlooks the car park and is right near the entrance doors so everyone walking or driving outside can see us on the balcony and through the sliding doors into the living room. I would like a little bit of privacy and have tried a putting a screen there but it's ended up looking like a beach windbreak. Does anyone know of glass frosting film that's fine for outdoors and ok in rain etc.? Open to any ideas!