Ideas to keep rear windshield cool

If the key is something you can use while driving?
And you're tinted up to the max now?

You really might not have many options. The horizontal nature of the Prius Rear Hatch make most products meant to be temporary kind of difficult to use.

If you've tinted it, and bought something to use while it's parked,

you really might be doing the best you can.

I'll keep an eye on this thread myself because if you figure something out I might be interested.

 

Some random thoughts: (may not be helpful)

Tint is usually applied on the inside of the glass. Any IR (infared) that is reflected from the tint layer still heats up the glass itself.
Inexpensive tint material may be good a blocking visible light but let the IR heat right on through.

So if you could find a company that really knows what they are doing and could apply some silver based "tint" on the outside, it probably would make a huge difference. But it likely would be VERY expensive and might not last a really long time.

Why does this bother you so much ??

 

They still sell the louvers, but it might take some communication to see if any fit the dimensions and rear window angle of the Prius hatchback.

Astra/Hammond Rear Window Louvers - Free Shipping on All Orders @ JEGS

Rear Window Louvers | Willpak Industries

Perhaps an email to the manufacturer is in order?

 

85 degrees isn't all that hot. If the dog is in the front seat, the vents could be facing the dog

 

I thought that if you gave them the dimensions of your hatch, and the angle of the glass, they might be able to tell you if it is similar to something they already produce. Not a custom built piece.

 

A friend told me about a video where a guy takes a heat gun and passes it in front of a panel with cheap tint and expensive tint. The cheap tint allowed him to feel heat with his hand on the opposite side of the panel, the more expensive tint did not. Not sure what the diff is, but maybe you could look into this?

 

Found this on a window tint website westsidewindowtinting.com


Interesting facts about premium window tinting

1. Premium window tinting is able to block out both IR radiation and UV radiation. The former causes the interior of the vehicle to heat up, while the latter poses harm to a person's health.
2. Untreated windows allow 70% of the harmful ultraviolet light emitted by the sun to penetrate through the glass.
3. Premium window tint film comes with a lifetime manufacturer's warranty.
4. The adhesive used during application of the tint film needs to be of high quality so that your window tint lasts at lot longer.
5. If you think that your office, home or car has cheap tinting, we certainly recommend having it replaced as soon as possible. It becomes even more important when it starts to bubble or peel.

- See more at: Cheap vs. Premium Window Tinting Film. What's The Difference? - Westside Window Tinting

 

My Prius C came with factory glass that blocks 100% UV. I would assume that is true with the lift back as well. The better tints add metal particles or ceramic to the dye and this reflects out more heat. If you buy cheap tint is is just a dye that blocks out the heat. Straight dye does not block out heat as well.

 

Oops. You're right. The old tint inside would have to be removed first.
And the type of tint I was talking about is not typically used on cars but on the windows of buildings.

 

I bought the Heat Shield for the front window. It fits perfectly and is easy to use as well as easy to store.
I will be tinting the windows soon.

 

Hey Rick, did you intend to misspell AWESOME in your forum name?

Seriously, the Heatshields are a great product.

 

Where did you buy a rear window shade?

 

They're available here:

Sun Shades for 2012 Toyota Prius C