If you want to save money and the crack doesn't bother you, you can do the following to stop the cracking extension:, z# \# T" F; h1 \& R7 F; E
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(1) Buy a set-tube Epoxy (come with twin-tube to mix) at auto parts store or homedepot3 R( @- N! J% ~3 e' u# z% i2 o
# \& T" C5 Q7 P! V1 e+ l(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.8 N+ T2 \. {7 w& t/ g x- S
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(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.