Window Tinting Law
Tinted vehicle windows: the law
The rules for tinted front windscreens and front side windows depend on when the vehicle was first used. There are no rules for tinting the rear windscreen or rear passenger windows.
Vehicles first used on 1 April 1985 or later
The front windscreen must let at least 75% of light through and the front side windows must let at least 70% of light through.
Vehicles first used before 1 April 1985
The front windscreen and front side windows must both let at least 70% of light through.
https://www.gov.uk/tinted-vehicle-window-rules
Window Tinting Installation Technique
Fixed side windows
First, the window tinting film is cut to the shape of the window it is required to tint. Once the desired shape is achieved the film can be shrunk to conform to compound curves within the windows preventing fingers from forming along the top and bottom. The inside of the window is then cleaned with a razor blade to remove any contamination. The window and film are now soaked in a special slip solution. The film is then placed on the inside of the glass. Using specialist window tinting tools, the slip solution is pressed out from behind the film leaving a clean even finish.
Opening Windows
First, the window tinting film is cut to the shape of the window it is required to tint. The seals are then removed from the inside of the window to allow better access with the film. The inside of the window is then cleaned with a razor blade to remove any contamination. The window and film are now soaked in a special slip solution. The film is then placed on the inside of the glass. Using specialist window tinting tools, the slip solution is pressed out from behind the film leaving a clean even finish.
Rear windows
First, the window tinting film is cut to the shape of the window it is required to tint. The film is then pressed on to the glass in an H pattern. The excess film is then shrunk to conform the compound curve of the glass. The inside of the window is then cleaned with an abrasive pad to remove any contamination. The window and film are now soaked in a special slip solution. The film is then placed on the inside of the glass. Using specialist window tinting tools, the slip solution is pressed out from behind the film leaving a clean even finish.
www.thetintfactory.co.uk