Here, I will put us through a tested method that one can use to prevent the expansion of a crack or chip on a windscreen.
And guess what, the material for the process is quite common, you might already own one.
Yes. The regular nail polish. But the clear type. Not any of the coloured ones.
The clear nail polish can be used to keep cracks or chips on windscreens from spreading.
When applied, it fills up the nooks and crannies of your small windshield chips and cracks and when it dries, helps to seal and protect it from the cold and elements that cause further cracking!
Mind you, before you apply the nail polish to ensure to clean the damaged area of your windscreen with soap and water. This is to ensure that specks of dirt are not trapped in the crack after you have applied the nail polish.
Once that is dry, simply apply a thin layer of clear nail polish to the damaged area and let dry.
See. It is not so hard.
Note, this method is not advised for large cracks windscreen. Instead, consult a professional windscreen repair technician or replaced your windscreens if they are severely damaged.
Remember, the nail polish method is best only for tiny chips and cracks on your windscreen.