If you want to save money and the crack doesn't bother you, you can do the following to stop the cracking extension:1 g4 z- v. A5 v; l3 @" I+ K- d
1 U7 P- ^2 l O9 y(1) Buy a set-tube Epoxy (come with twin-tube to mix) at auto parts store or homedepot/ b: r1 v! Y; ?, n% m4 L4 N( Y0 w
+ S! |7 {% D3 m$ T# `8 n(2) To buy a round or square think-glass-disk with diameter or side length of 1 inch. If you can't find it, you can go 99 cents stores or dollartree to buy a large-clear-cloth-button at similar size.0 G! Q4 k- m# K5 Z8 H" L
$ w8 \. k! b5 q3 J(3) Prepare Epoxy well, spread the paste to one side of the glass or button, attach it to the crack-upper-end from inside of windshield. Wait for 24 hrs. It'll be as solid as a rock and permanently stop the crack extension.