After all the thousands of Ks in the bush I had a rock hit my windscreen on Silverwater Road Sydney yesterday. Not worried at the time as it was just a little ding below the wiper arm on the drivers side (in the little black strip area). By the time I looked again last night it had developed into a five armed star with each little arm about 10mm long. Today I got in the KJ and the thing had grown! One arm is now 100mm long and curved (See photo below). Having not had to change a windsrceen in many years (lots of dings on my old Forester but it never spread on me like this). So what do I do? Will it stop or continue to grow? Can it be 'repaired' by one of those O'Brien guys, or do I need to replace it (ouch what does that cost?).

either drive with it like that, or replace it some places in the states claim they can fix a crack the size of a US dollar, but it never looks right

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2008 KK Liberty Sport NIGHT OPS EDITION + GILLS
OEM & Custom Skids - Factory Tow Package - Rock Lizard Skink Super Sliders
Prototype JBA 4 Inch Lift - JBA UCA's - Flowmaster Super 44 OR - Whacked Resonator
Jet Stage 2 - RL Gecko Basket Rack - Custom Winch Bumper - Recon 10.5K Winch

You could have O'Brien's stop it from going any further, but I do believe that constitutes a new screen. Check your insurance policy for replacement screen/s

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02KJ LTD
245x75Rx16 Hankook MTRT03
ARB Winch Bar,Tiger11 Winch,4xNarva spots,GME UHF,Navman GPS
Mopar Skid Plates,dual battery system,Tubular Jeep s/steps,
2.5" Lift OME Shocks & King Springs,AirFlow Snorkel
Long Range fuel Tank 115 Ltre,Drawer Unit
Rola:Roof Rails,Basket,Shovel Holders & Luggage Boot
Desert Edge Off Road Camper

TJM sell a product called UFIXIT Windscreen DO-IT-Yourself repair kit. Bloody brilliant. I had a crack about the same size as yours, (maybe I didn't word that correctly) and you now need to really look for it to see it.Most people looking at your screen would not pick it up.
Cheers Greg

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Smerf

White '07 KJ 3.7l
2" ARB lift

Once the cracks that long it's hard to stop, you need to drill a spot at the very tip to dissipate the stress.

I'd replace it.

and check prices -
Austin has a shop (1 man shop) that will get a OEM windshield and come to your house or job and replace it on site
and he was cheaper than the big shops - he gets the 'jobber' discount because he does a lot of them
but his overhead is a truck and a phone.

It was ~ $120 US in 2007 for a new factory windshield installed.

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2005 CRD
stuff
Skeptic quod gratis asseritur, gratis negatur

Replace it - it's too far gone to be left. I'll have to check the cost but I think I remember paying around $400 for one last Christmas. Don't you have glass cover (no excess) on your insurance?

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November 2006 2.8 CRD manual, CRDSTU front springs, King HD rears, Polyairs, LT245/70R16 Pirelli Scorpion ATRs, DP chip, Airflow snorkel
TJM alloy front bar, Ox 9500lb winch, Hella Compact 4000 spots, Complete set Mopar skid plates, Mopar cargo barrier
GME TX3440 UHF, Codan NGT HF