If you want to save money and the crack doesn't bother you, you can do the following to stop the cracking extension: ! s/ q3 N& A( c4 D- P# K! `8 F3 K6 m0 I( x4 F; |- L' Q
(1) Buy a set-tube Epoxy (come with twin-tube to mix) at auto parts store or homedepot / V: O" K6 P! P: D 8 v" r- x7 [# |, _/ Q4 T(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. * g8 U3 A h% Q) N! ]4 s, H" Q: o+ B7 y+ |' t9 t. m! R* @
(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.