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The front windshield is NOT made from strengthened glass. That is why it is laminated instead. If the windshield should be hit by a rock or similar, it will not shatter in to 1 billion pieces, the reason for this is that the driver will loose visibility if the window will shatter. The laminated screen will crack, not shatter and visibility is maintained. Many older VWs (pre '70 or so) does not have laminated screens. My 68 Bug is one of them. PerL 73 Variant L Shad Laws wrote: > Hey Jesse- > > Safety glass is a 3-ply thing: 2 plies of tempered glass with a sticky piece > of plastic sandwiched in between. Tempered glass is stronger than regular > glass, but often when it breaks it shatters into a billion places. The > sticky piece of plastic keeps all the shards of glass in place, away from > the passengers. > > However, that piece of plastic ages, especially when heat is applied to it. > So, often old VWs develop the milkyness around the defroster vent area. I > wonder if newer safety glass uses a different plastic compound to avoid this > problem... > > Take care, > Shad > > ----- Original Message ----- > From: "jesse and monica" <jjmojo@blazenet.net> > To: <type3@vwtype3.org> > Sent: Sunday, September 23, 2001 12:28 PM > Subject: [T3] What causes? > > > Hello T3'rs, > > What causes old glass to start to get milky looking? I know it's the age > > but what actually causes it? Just wondering. > > later, > > jesse > > 71 fi squareback > > and looking for another.... > > > > ------------------------------------------------------------------- > > Unsubscribe? mailto:type3-request@vwtype3.org, Subject: unsubscribe > > > >