As title says i smashed my rear windscreen so i decided to get some purspex and make a rear window out of that for the lightness and because its cheap, i used silicone to stick it in i had left it for about 4 hours and thought it would be enough but it came off basicly i was going to fast and wanted to know what was the proper glue you would use. Cheers Joe

Sgs man that comes to the yard will give you the proper stuff joe. He'd probably fit it for you for next to nothing.