other windscreem properties
Submitted: Tuesday, Nov 22, 2005 at 23:13
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warthog
Finally had an annoying leak at the top of the windscreen fixed today and found out something that will probably not be news to some but certainly was to me.
It doesn't rain much here but where we are going for holidays it tends to. The gu has had an annoying leak around the top of the windscreen since we bought it secondhand some time ago, so time to get it fixed before we go. I had thought the wind was forcing
water up past what I believed was the seal around the outside of the windscreen.
It turns out the seal is only a trim and the screen is actually glued in place with urethane. The windscreen fitter showed me where ours was loose around much of its perimeter and not bonded at all at the top. Apparently when one of these screens is fitted it needs to be primed before it will bond properly with the urethane and ours probably had not been.
I had noticed on a previous trip when the screen had been leaking, that it was moving in relation to the roof lining. Not a great deal but enough that you could definitely feel it with your finger as the body flexed over bumps. Yep these new cars are p weak I thought. Turns out it is important that the windscreen is properly bonded, not just to stop it leaking, but also because it forms part of the structural integrity of the car. Hmmmm clever little engineers.
Reply By: Member - JD - Wednesday, Nov 23, 2005 at 09:05
Wednesday, Nov 23, 2005 at 09:05
Hi Warthog,
I own a GU and what you stated about the windscreen forming part of the structual integrity...
well it worries me...just say we pop the sreen out bush do we keep on driving risking a body fold?? some might laught at this..but structual is structual,and you said yourself you felt body flex over rought terrian...definately a concern!..they might clever little pr@@@%ks but in the long term..maybe short term WE pay for it.
JD4WDActivist
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Follow Up By: warthog - Wednesday, Nov 23, 2005 at 12:24
Wednesday, Nov 23, 2005 at 12:24
I wouldn't be too worried. We have done about 30k in ours and windscreen has been leaking on the odd occaision it has rained throughout that time. Had a roof rack on for much of that and the windscreen presumably wasn't providing much strength as it wasn't bonded properly. I have since taken the roof rack off as we now have a camper trailer and don't use it . No cracks in our "a" pillar though I must admit I was also worried when I felt the movement.
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Reply By: Jarse - Wednesday, Nov 23, 2005 at 10:00
Wednesday, Nov 23, 2005 at 10:00
Warthog, you are correct about the windscreens forming the structural integrity of the vehicle. The first "Australian" made vehicle was the Camira in 1982, then the VL Commodore. So its not exactly new technology. The Camira also had significantly thinner glass all round compared to mainstream cars. You could almost play the rear windscreen like a Rolf Harris wobble board. It was only 3mm thick!
For the bond to be effective, correct priming of both the glass and the body aperture is imperative. I don't know how the glasses are installed at the factory, but I suspect done by robots.
You'd be surprised how much strength this type of installation adds to the vehicle in a rollover accident. I've seen the videos ;)
BTW, if you are thinking of a reseal of a urethane bonded glass, dobbing a blob of silastic won't do (as you mentioned, structural integrity). The glass has to come out.
I would ask the windscreen sales fella exactly HOW he is going to fix it before accepting the quote.
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Follow Up By: warthog - Wednesday, Nov 23, 2005 at 12:13
Wednesday, Nov 23, 2005 at 12:13
He's already done it, thats how I found out the info. The glass came out very easily, he showed me how poorly bonded the glass was. Basically the trim was holding the glass in and not much else. Glass was taken out and reprimed and new urethane applied to the windscreen recess. I am satisfied the job is done correctly as he explained what he was doing while he did it. Overall very happy with the job and might as
well give him a plug.
WB mobile windscreens in
Alice Springs. No association with the co just a satisfied customer.
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Reply By: techie - Thursday, Nov 24, 2005 at 00:34
Thursday, Nov 24, 2005 at 00:34
One problem I noticed with leaking windscreen is when I find it is from rust.
Pulled the windscreen out and found the rust had "run" along the window rim and needed major repairs.
Usually when the rust, leak starts to show, most of the damage has been done.
A word of warning for the novices. - I got bit badly.
Techie
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