One way mirror film works with light. The side with the most light will give the mirror effect making it most effective with windows exposed to outdoor light. If used indoors, sufficient artificial light needs to be created on the side the mirror effect is needed.
A standard single-pane window will let in 90 percent of the Sun’s UV radiation while a standard double-pane window will let in over 80 percent of the UV. Museum Grade window panes block 98 percent of the ultraviolet radiation from damaging the contents through your windows, so just being indoors doesn’t mean that you are not susceptible to the harmful UV rays of the sun, because you are actually.
So, while standard glass windows do reflect a small percentage of the UV rays away, being exposed to direct sunlight through a window all day long you are being subjected to these harmful UV rays which can cause skin cancer and fatique, that is why window tinting is recommended by the skin cancer foundation as a protective measure to reduce the risk of skin cancer and skin damage. Our solar control window films will absorb 99% of these harmful UV rays preventing them from entering a room, which will drastically reduce skin related illnesses caused by the sun.