Polycarbonate or lexan glass. Without any rivets??

I'd like to reduce weight with some polycarbonate glass. But I hate the rivet look.

I don't understand why all the cars with those panels have rivets or screws. 

Cant the plastic windows be attached with adhesive the same way glass windows are?

Or is there some reason for this that I am missing?  Thanks

Absolutely; here's how I glued in my lexan windshield.

In reply to Tom Suddard :

So I guess I'm worried that the rivets are required to keep the structural integrity that you lose by going from glass to plastic?

Not structural, just easy button. Mine is screwed in. IMO the car does not need to look good for 24hroflemons.

In reply to Tadope :

I'll use rivets because that's original. Group 44's Jaguar XJS  had rivets  and I like the look. But I'll use flush rivets rather than pop rivets because I obsess about drag.  

If you use lexan or polycarb, and there's any dirt or stuff on them when you roll it down, you'll instantly get scratches, then more scratches, then more, and will be replacing them in short order. If you have no plans to ever roll them down, no reason you can't set them up like the factory ones.

That said, if your goal is to lose weight, part of the upside of riveted lexan is to eliminate all the window mechansims, motors, etc. 

But yeah, rivets are just easier, and more secure in most cases for a competition car. Also you can mount the lexan flush to the frame for less drag, vice "inset" like OEM windows would be. 

Rivets make it easier to replace, and you will need to replace them frequently because they scratch.

Also, if you glue it in, you won't be able to kick the plastic out if you roll over and need to go out a window hole.  The whole point of Lexan is that it doesn't really break.  Well, it CAN break, in big ugly shards, if stressed enough, like say your window aperture suddenly getting a few inches smaller due to a collision... unless you rivet it in place so it can just break free from the rivets.

Imagine your head punching through a plastic windshield, making a bunch of jagged points that are still attached.... and then you spring back.  Grisly.  I'd much rather the plastic be as loosely attached as possible!

Glass is not really all THAT heavy, in comparison to how much of a pain in the ass plastic is to live with on anything but a purely competition vehicle where the ease of replacement is more important.

Aahhhhh. Good to know.  Lexan sounding better already.