If you want to save money and the crack doesn't bother you, you can do the following to stop the cracking extension: $ M" V) A% a7 |8 G+ q. |6 M3 O$ Y3 G: o. c
(1) Buy a set-tube Epoxy (come with twin-tube to mix) at auto parts store or homedepot* i1 X$ C, z1 E4 W
& `" L" [% S) Y4 e& |8 V3 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. + b+ Q7 l. D4 ]" Z % B2 I, V2 }! |; P3 }(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.