One Way View (OWV) on windows

[Piwoslaw]

One Way View (OWV) foil is a large sticker with holes in it:

This allows you cover the windows of stores or cars with advertisements, while still being able to see out.

One downside is that when wet, water fills the holes, spoiling the ability to see out.

The upside is that OWV reduces (by ~50%) the amount of light entering through the glass.
This could be an option for reducing solar gain and cooling needs, especially since many recent cars have panoramic moonroofs:


For this reason I am considering sticking this on my 308sw's glass roof.

Any opinions?

[cRiPpLe_rOoStEr]

I remember it was fairly common as a way to display ads in the rear window of taxis in many Brazilian cities around the early 2000s. Then, all of a sudden, it seems to have fell out of favor. Maybe regulations restricting the displaying of ads on taxis.

[boingk]

Sounds like a good idea for me on the roof. Personally I couldnt think of a worse idea for a roof than glass - it might look good in an adertisement or showroom but its horridly impractical.

[Gasoline Fumes]

I've been thinking about it! I was calling it perforated vinyl. Regular window tint film limits sunlight, but the dark color makes the glass hotter. White vinyl should be much better.