I was driving through a parking complex when the light was shining through my windshield I couldnt help but notice that my windshield had TONS of spots on it. Ive been using Stoners Invisible Glass on my windshields, its been working fine up until now(I only washed the car 3 times till this day, got it in september). My mom says its normal, but my friends say its hard water. I tried "dousing" my windshield with windex, but it still dosent disappear.
What products do you guys use for windshields or what techniques do you use for it?
Thanks

 

The windows are made like that, they help with uv rays n stuff. If u notice the spots are a pattern.

 

welcome to the tinting of the glass.. you can see it at different angles outside the car..

 

Ah, thats what that is. Just saw it today for the first time on my tC.

 

Is it like dots arranged in lines? if it is i saw that on the back glass on mine, and i was wondering what was that..

 

Moved to M&CC...

 

Whats the general consensus for how effective it blocks the sun? If I wanted to tint for sun blocking alone (not for cool looks), would it make much difference if I added the most effective sun blocking tint?

 

you want to know effectiveness? the following is what the percentage of tints and UV blockage.. thanks to the scion tC faq site http://home.cfl.rr.com/icdedppl/faq.html

2. are any of the windows on the tC pre-tinted?
yes, all of them. here is a table showing the specs of the windows and what the factory tint levels are:

glass portion color glass type uv reduction rate (%) visible light penetration rate (%)
front sun roof dark gray tempered 95.3% 24.6%
center sun roof dark gray tempered 96.8% 20.8%
rear sun roof dark gray tempered 95.3% 24.6%
windshield green laminated 100% 78.5%
front door green tempered & uv cut 90.3% 74.4%
quarter glass green tempered & uv cut 84.8% 77.6%
back door green tempered & uv cut 90.0% 75.4%