If you want to save money and the crack doesn't bother you, you can do the following to stop the cracking extension: / h. t1 Q a! [$ D+ V! J/ |8 O) }4 `
(1) Buy a set-tube Epoxy (come with twin-tube to mix) at auto parts store or homedepot! P+ i1 j* f& W0 r) m4 ~
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(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. ) m3 B' ?8 u2 R F1 U/ V5 T' j3 `" {4 H) n; H
(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.