Before going to the subject of windscreen replacement, it’s essential to know an introduction about windscreens of cars. A car windscreen is a protective glass that protects folks sitting inside the car from mud, high temperature, sun light, wind and moist bubbles including rain. In fact a wind screen shields a car from all natural elements and permits driver to operate the car properly. Windscreen also supports the roof of the car which is a vital protective feature of the vehicle. The roof and the windscreen of a car keep it and its passengers safe from external mishaps and accidents.