How dark are thermally & noise insulated glass windows?

[whitex]

Did anyone measure light transmissivity of the thermally and noise insulated windows? I saw in videos it's slightly darker than non insulated glass, but could not find the percentage transmissivity. I'd like to use that number so that I can order the appropriate tint film ahead of the car's arrival.

 

[XLR82XS]

Videos may skew the color but It's not darker - has a slight frosted look to it.

 

[f1eng]

I wonder if it varies from country to country depending on local laws and typical weather?
Here in the UK “thermally insulated glass all round” is standard and the option is just named “Acoustically insulated laminated glass” in the UK configurator, though there is a graphic showing a small reduction in UV transmission too.
Most of the year here the best solution is no tint at all for the side windows

 

[Hirschaj]

Videos may skew the color but It's not darker - has a slight frosted look to it.

I have had both insulated an non-insulated on my Taycans. The insulated is definitely slightly darker. I have not measured it (I assume I need some sort of tool for that, but not sure what) but it looks darker from the outside and with the door open I can see the tinted film because it does not extend all the way to the edge of the window. I'll try to get a picture sometime today.

 

[Hirschaj]

I have had both insulated an non-insulated on my Taycans. The insulated is definitely slightly darker. I have not measured it (I assume I need some sort of tool for that, but not sure what) but it looks darker from the outside and with the door open I can see the tinted film because it does not extend all the way to the edge of the window. I'll try to get a picture sometime today.

Here’s a photo…

 

[whitex]

Here’s a photo…

Thanks. This is what I was wondering if anyone measured. There are meters out there which measure it, I picked up this one for under $100 last year for a project I was doing which looks like this:

Obviously adding tint on top of this already darker window will make it darker than adding same tint to a clear window. I realize most people won't care so much, I have specific preferences and don't like my windows being too dark for night driving. I actually tint the front side windows lighter than the back for better night visibility (especially if the car has dimming side mirrors already).

I'm currently planning a 3,000 mile fly-and-drive pickup next month, so was thinking whether I would ask the dealer to do the tint prior to pickup, but maybe I'll just drive it as is and figure out the tint once I've got the car in my garage and can take actual measurements.

 

[daveo4EV]

Did anyone measure light transmissivity of the thermally and noise insulated windows? I saw in videos it's slightly darker than non insulated glass, but could not find the percentage transmissivity. I'd like to use that number so that I can order the appropriate tint film ahead of the car's arrival.

In North America not in any why that is noticeable…it's mostly the double pane thickness and heat reflecting coatings - not actually significantly "darker" windows.

 

[whitex]

In North America not in any why that is noticeable…it's mostly the double pane thickness and heat reflecting coatings - not actually significantly "darker" windows.

The picture from post #5 above does show it visibly darker (remember, VLT percentages multiply when stacking films). Once I actually get my car (in about a month) I will measure the Visual Light Transmissivity (along with UVR and IRR since the meter has them) and will post it here for reference.

 

[TXAG]

Once I actually get my car (in about a month) I will measure the Visual Light Transmissivity (along with UVR and IRR since the meter has them) and will post it here for reference.

Thanks. Then we can fill out some of the table in message #2 of this thread:
https://www.taycanforum.com/forum/threads/porsche-thermal-and-noise-insulated-glass.11649/#post-174658