Does this product provide privacy at night time even when indoor lights are on?

Currently there is no product in existence that allows for 24-hr one-way visibility. Whichever side of the glass has the most light will be the side that you can see. This unfortunately means that at night, yes, you will be able to see in. Pre Cutting film to exact specifications is not a service we currently offer. All materials are supplied in standard widths and in one continuous piece.