Page 1 of 1

Stubborn streaks on windscreen

Posted: Mon Feb 22, 2021 2:55 pm
by Alex_O
I've been trying to get some stubborn marks off the windscreen since taking delivery in December. When the screen is dry you can't see anything, but as soon as it gets damp the streaks appear, and they're not subtle, stretching from the top where they're widest (the worst nearly 10cm wide), and thinning as they head down the screen.

I've used every glass cleaner I can get my hands on, I've used trafic film remover, vinegar, polish, even the magic erasers, and it's just not getting rid of them. In daylight they're not such an issue, but at night in the wet cause a lot of flaring with light sources.

Has anyone else seen this, or got ideas to get rid of it?

Re: Stubborn streaks on windscreen

Posted: Mon Feb 22, 2021 9:29 pm
by Rifleman
Alex_O wrote:
Mon Feb 22, 2021 2:55 pm
I've been trying to get some stubborn marks off the windscreen since taking delivery in December. When the screen is dry you can't see anything, but as soon as it gets damp the streaks appear, and they're not subtle, stretching from the top where they're widest (the worst nearly 10cm wide), and thinning as they head down the screen.

I've used every glass cleaner I can get my hands on, I've used trafic film remover, vinegar, polish, even the magic erasers, and it's just not getting rid of them. In daylight they're not such an issue, but at night in the wet cause a lot of flaring with light sources.

Has anyone else seen this, or got ideas to get rid of it?
Did you have a ceramic paint protection coating applied by the dealer? If so, could it have been poorly applied and run down the screen from the roof?
I’m no expert on ceramic coatings but I think I read something somewhere about catalyst agents that can be used to remove the coating...

Re: Stubborn streaks on windscreen

Posted: Tue Feb 23, 2021 10:11 pm
by DrShine
use a fine grade steel wool with a glass cleaner. practice first but once you try it will be amazed how well steel wool works.

Re: Stubborn streaks on windscreen

Posted: Tue Feb 23, 2021 10:34 pm
by Moss
Alex_O wrote:
Mon Feb 22, 2021 2:55 pm
I've been trying to get some stubborn marks off the windscreen since taking delivery in December. When the screen is dry you can't see anything, but as soon as it gets damp the streaks appear, and they're not subtle, stretching from the top where they're widest (the worst nearly 10cm wide), and thinning as they head down the screen.

I've used every glass cleaner I can get my hands on, I've used trafic film remover, vinegar, polish, even the magic erasers, and it's just not getting rid of them. In daylight they're not such an issue, but at night in the wet cause a lot of flaring with light sources.

Has anyone else seen this, or got ideas to get rid of it?
If the car was delivered that way, this is IMHO typically a problem to be solved by the dealer. Anything you do yourself could make things worse.

Re: Stubborn streaks on windscreen

Posted: Wed Feb 24, 2021 11:37 am
by Topaz
I agree with Moss. It’s a dealer problem if you can’t shift it with something like Isopropyl alcohol.

Re: Stubborn streaks on windscreen

Posted: Wed Feb 24, 2021 3:49 pm
by Alex_O
Rifleman wrote:
Mon Feb 22, 2021 9:29 pm
Did you have a ceramic paint protection coating applied by the dealer? If so, could it have been poorly applied and run down the screen from the roof?
I’m no expert on ceramic coatings but I think I read something somewhere about catalyst agents that can be used to remove the coating...
No coatings applied at the dealer, but I'm beginning to wonder if this is an adhesive that's not been properly cleaned off the glass from installation.

Re: Stubborn streaks on windscreen

Posted: Wed Feb 24, 2021 3:51 pm
by Alex_O
DrShine wrote:
Tue Feb 23, 2021 10:11 pm
use a fine grade steel wool with a glass cleaner. practice first but once you try it will be amazed how well steel wool works.
I had a go in the top passenger corner - out of the way if I messed up! - but it hasn't touched the marks. Thanks for the tip though.

Re: Stubborn streaks on windscreen

Posted: Wed Feb 24, 2021 3:52 pm
by Alex_O
As Moss and Topaz suggested, I've emailed the dealer. Will see what comes of it.