Strange marks on outside of windscreen

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Muldoon
Getting There!
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Joined: Wed Oct 24, 2018 9:00 am
Drives: 2018 SE TSI
Location: Yorkshire

Strange marks on outside of windscreen

Post by Muldoon » Fri Jun 14, 2019 12:46 pm

Has anyone noticed a 'mottled' pattern on the outside of the glass as the wipers sweep? Looks a bit like the pattern on a rainbow trout fish - I reckon it's a residue from a polythene cover fitted at the factor to the screen but it won't come off despite trying with Autoglym glass polish etc. I think the quality is a bit poor for the screen and wiper blades to be honest - glass seems to scratch very easily.

Adam_013
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Drives: 2018 Polo Beats 1.0 95PS
Location: East Anglia

Re: Strange marks on outside of windscreen

Post by Adam_013 » Fri Jun 14, 2019 1:00 pm

I've had windscreen judder since day 1 depsite having various wiper blades, screen polishes and the such.

I've also still got the shipping label residue on the inside of the screen when it's misty still visible which I'm also unable to remove.

I can live with that, but the juddery wipers drives me up the wall.

SRGTD
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Re: Strange marks on outside of windscreen

Post by SRGTD » Fri Jun 14, 2019 1:26 pm

Muldoon wrote:
Fri Jun 14, 2019 12:46 pm
Has anyone noticed a 'mottled' pattern on the outside of the glass as the wipers sweep? Looks a bit like the pattern on a rainbow trout fish - I reckon it's a residue from a polythene cover fitted at the factor to the screen but it won't come off despite trying with Autoglym glass polish etc. I think the quality is a bit poor for the screen and wiper blades to be honest - glass seems to scratch very easily.
Production of factory installation marks on windscreens are often difficult to remove. On one of my previous cars, under certain conditions you could see four round marks on the screen that were from the rubber suckers on the screen lifting / positioning equipment that’s used on the factory production line to lift the screen into position for fixing to the car. I never did get rid of the marks during 4+ years of ownership.

Some people have said that claying the screen can remove these marks.

Griff74
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Drives: 2019 Polo GTi+ in Reef blue
Location: Manchester

Re: Strange marks on outside of windscreen

Post by Griff74 » Fri Jun 14, 2019 3:38 pm

Get yourself a G3 claymit off Amazon, much easier to use than a bar and you will be amazed with how clean and smooth you get your windows (and paintwork if you use it on it), be careful to keep it well lubricated with soapy water when using.

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