Tinting !

You cannot legally "tint" a windscreen or either of the front windows (ie: driver or passenger's).

However, you can add a sticker (eg: Exploroz sell one) that goes across the top of the windscreen and is approx 100mm high. It follows, therefore, that you could also add a similar size piece of tint across the top of the screen in lieu of such a sticker.

A lot of modern windscreens already have the tint built-in to the top.

The strip across the top may not enter the area swept by the wipers and you can tint the front door windows but not beyond a certain % of light transferance.
Rules are herehttp://www.wfaanz.org.au/autoau.htm
QLD Windscreen rule
The windscreen must not be coated in a manner that reduces its luminance transmittance. This prohibition does not apply to the greater of the following two areas;
• the area above the highest point swept by the windscreen wipers; or
• the upper 10% of the windscreen.
Other states are similar


Anyone who fully tints a windscreen needs to think what will happen at night.
Would be like wearing sunglasses in the dark.

Some cars have a factory type of tint built in but is mainly to keep UV out.

As you dont drive constantly in a direction that would cause a problem seems there is a bit of overthinking here.

Lazylux, external sunvisors are still available for many models and provide an extra degree of sun protection.
The metal mesh ones provide for increased airflow, but they all affect your fuel economy - and hitting a big bird will usually wipe them out.

Sunvisor

Cheers, Ron.

Just a small word on the type of tinting. If it has a metalic based tint then it can upset a GPS based dash cam or even a Toll road sensor if installed behind the tinted section.

We have a narrow strip across the home car's windscreen and I had to cut a hole in it to get reliable GPS signal for the Dash cam.

Phil

You won't be getting from the sun coming through the windscreen as laminated glass blocks around 98% of UVA and all of UVB.
If they didn't then the plastic laminate between the glass layers would break down and go cloudy/yellow rendering the windscreen a hazard.
Some light reading.

But, when I worked as a tinter we would occasionally do a new windscreen (usually for the bosses car) with 70%VLT film before installation. The stuff was about as tinted as gladwrap, but still cut away around 20% of the heat. The down side was that it wasn't strictly roadworthy (or at all) and it could get scratched easily.

It's illegal to tint the windscreen or place a shade bar across the top, I was picked up and fined for that in NSW. Tinting is legal on the driver's and passenger's side windows but cannot be as dark as the rear windows. Any tinting company can advise on the legal tint shade.