Resurrecting this old thread for the fun of it, and to report my experience.
I waited for months for the local professional to have time to mount my lexan. Even then I had to help him.
First, according to the manufacturer, you cannot use the typical urethane. I guess it won't hold. We were directed to use good old RTV, which was a hassle due to the viscosity of the adhesive. The poly was a bit difficult to get mounted, as it's truly flat and the stock glass is curved a bit. It took a bit of sanding the edges in a couple of places, and some finagling to get it in place correctly. We rigged some compression bandage style tape contraptions and let it cure overnight.
The manufacturer also said if I felt the need to, that I could drill a countersunk hole in each corner and screw the thing in. Having ran the thing for about 2 months now, I do not think I'll need the screws.
Also, there is no mirror nub installed on the poly. And you cannot glue one in place. With my rear AEV tirecarrier and all my junk on the back, I gave up the rear view mirror long ago, so it was a non-issue for me. If you have to have one the accepted practice is to drill through the poly and bolt one in place.
After the install, my experience with the poly windshield has been totally positive. It sounds a bit funny. When it rains, or bugs/stones hit, the sound created is higher pitched than glass would be. It's kind of odd.
So far, no problems. Wipers work just as before. No abrasion visible yet. I've taken a few stones that would have likely cracked the OEM glass. They didn't even leave a mark.
The only nitpicky thing I can say is that there is a bit more flex than the glass. In strong winds, or when passing an oncoming semi, the poly flexes a tiny bit. It's only noticeable by looking at the reflection on the interior of the windshield. It also causes some funny effects when wearing my polarized fishing sunglasses, which is how I noticed. When not wearing polarized lenses, I forget that it does it.
So there you go. Overall, I highly recommend it to anyone who is sick of replacing glass, and sick of driving around with cracks for months waiting for the glass to get "bad enough" to replace.
Anyway that's my .02. Let me know if you have questions.
'76 CJ-7, '43 CJ-2a, '78 Bronco,'78 CJ-7, '75 CJ-5, '78 CJ-7, '80 CJ-7, '78 SJ, '79 SJ, '78 and a '76 FJ-40 , '90 XJ, '91 XJ, '86 CJ-7, '95 ZJ, '68 CJ-101 Commando, '00 TJ, '68 M-715, 2 '86 Military Blazers, '96 LR Discovery, '86 CJ-7, '91 YJ, '99 TJ, 07' JKU Rubi, 1988 YJ, 1973 Commando, 3 Diesel Excursions....
Now back to a 2013 JKU Rubicon with "stuff", planning 37's with minimal lift.
I've tried them all... Jeeps are still the best. (0||||0)