Some shops are good enough have a Sirim test report for their tints. It will verify the level of tinting, so you don't just have to take their word for it.
But some windscreens already have a certain level of tinting/uv protection built into the glass which cuts down on vlt, so you have to take that into account.
But some windscreens already have a certain level of tinting/uv protection built into the glass which cuts down on vlt, so you have to take that into account.