IR Camera: Window Tint Tested

[oldtamiyaphile]

It's amazing given all the affordable tech available these days, how few people are curious enough to actually test things, instead of going by 'what always worked' etc.

Since I do my own tinting and my van has two identical rear windows side by side, I figured I owe it to my own curiosity and Ecomodder to test my window tint for myself.

Here are the specs for my lifetime guarantee USA made film (I think Johnson & Johnson brand).

UV Rejected 99%
Visible Light Transmittance 20%
Visible Light Reflected- Exterior 5%
Visible Light Reflected- Interior 5%
Total Solar Energy Rejected 58%

Conditions: sunny winters day 15*C ambient, taken at midday (rear windows facing north - southern hemisphere).

Interior/Exterior Glass surface temperatures:





Black MDF shelves left inside to simulate a dash board etc:



So an 8*C temp reduction for about a $50 investment

[Daox]

Wow, that is quite the difference. Thanks for testing and sharing!

[teoman]

Thanks for the test!

Nice to see. Be careful as some surfaces such as metals act like mirrors which can gibe you wrong results.

[NeilBlanchard]

Why is the interior floor surface warmer with the tinted window?

[stefanv]

Originally Posted by NeilBlanchard

Why is the interior floor surface warmer with the tinted window?

It's not. I'm pretty sure the one on the right is the tinted window in the last picture. You can tell because it's hotter. The tinted window itself should get hotter than the clear window, since it's absorbing some of the solar radiation (if it weren't, it wouldn't look dark to the eye).