Best alternative to keep sun out during summer

Goose12345 wrote: ↑ i have 30% ceramic tint all around and visibility is more than acceptable, even at night. For my next car i'd prob go a touch darker if anything. I did it at my detailer for 360 + tax

otherwise you prob need something like this:

Thanks for replying with cost estimation.
I am not sure if I want the dark film to be around in winter.
May be I will look for a car windows sun shade that stick to glass surface by suction cups

sickcars wrote: ↑ The best/easiest thing is going to be Ceramic Tint, I have 35% on my car and its great even at night. I put 40% on my parents car so its a little bit lighter but still helps keep the interior cooler. You can also get the windshield very lightly tinted like 80% where you wont even notice it but it will help keep the heat out & the windshield being so big it does allow lots of heat into the car.

Yes, getting a light tint might not be a bad idea as one can keep it permanently.
I wonder if anyone here has any comments on the $20-$40 window cling films being sold at walmart, CT and autozone.

angryaudifanatic wrote: ↑ This is actually a fairly poorly understood topic. I mean, yeah, all of my cars have tinted windows, and in the back windows always to a very dark tint, but if you're looking to keep energy out, (and thus heat), you're not going to be making that big of a difference here. Why? Think about the R24 in your home's exterior walls. That's, what, 1 foot of insulation? Cars are not well insulated, at all - think about your car doors (metal) with little to no insulation, and how thin your car glass is.

That - and most people don't understand that blinds in a home are basically useless because the energy has already travelled through your window. 'Passive' homes, as an example, always point to exterior blinds for this reason. If you really want to keep that heat/energy out, you need tint on the outside of your car window, which is stupid, of course (due to impact).

Or, I guess you need a high end car with dual glazing and IR reflective material built into the glass.

First off OP, you don't need dark tint to reject heat. You can get tint with high IR/UV (non visible light) rejection and keep the tint very light. It won't reject as much heat as a darker tint, but it's still quite a lot. I have 30% tint and it's relatively light and easy to see through at night.
There's also no reason you'd want to ever remove tint. You can DIY apply tint film, but it will look like shit.
Personally I tint my vehicles to help keep them cool and I use sunshield for the windshield when I park during the day. I also crack open the windows on really hot days when it's not going to rain. Next vehicle I do I will also get the windshield clear ceramic tinted so I don't have to bother with a sun shade.

So Audi, home insulation is mostly there to insulate from the outside air. Think of your attic at 550C, there's no sun in the attic, but keeps the radiant heat from entering the home.
So yea, cars have no insulation, so you'll never get it cooler than the outside temp at 34C. The sun will heat the interior over air temp, but it will be cooling off to the outside air constantly.

Now sunlight entering your car is going to increase the temp over the air temp, just like a greenhouse, or a solar water heating panel. Also a black car will get hotter than a white car for similar reasons. Standard windows will let in all the light/heat, while tinted will reflect much of it away.

As for interior blinds, yes, they aren't as effective as exterior shutters, or awnings. But they are better than nothing. A lot of the light will be reflected back out the window. Ideally you'd want low-e solar tinted windows as well, which will help keep out heat. In fact, I had them installed last summer and they reflect so much light that you can be outside in the natural shade, but if you step in the reflection from the window it'll still blind you and feel like you're in the sun. The rooms in the light are noticeably cooler.

Many sources like mythbusters have tested white vs black cars temps, essentially reflective vs non-reflective, and tinting the windows adds more reflectivity. Yes, it would be more effective on the outside, but most of the IR light will be reflected back out (just like it got in).
If you wanted to go nuts, you'd get chrome tinted windows and a chrome wrap/paint job.
The tint will also block UV light, which will help preserve your interior.

https://carfromjapan.com/article/indust ... et-hotter/

Use tinted windows
Install a windshield sunshade
Always park in a garage or under a shade