Windshield Repair Forum

Saturday I did a star for a repeat customer and the thing filled perfect and looked excellent. I did not use Delta resin. I was trying to use up a bit of resin from another company which is SUPPOSED to be ok. The dang thing split at a right angle off the end of a star leg took a curve and then went verticle. The star was in the flex zone on the lower right third of the W/S. Today I fixed the crack which turned out great. My question is this... are some rare stars fatefully located in the wrong place at the wrong time or was it poor resin choice? The car was a ford focus. This is the first time I have seen a perfect repair blow out. Embarassing to say the least.

I've never had a repair blow out like you describe(I use Glass Mechanix resins), but I have seen stress cracks in Focus's without an impact point. I systematicly refuse crack repair when it's a stress crack(no obvious impact point, and eminating from the edge of the glass), I suggest that the person go back to the shop that replaced thiere wndshield and have them remove the glass to see why it happened, or remove the rust under the glass. I have yet to see a stress crack on an OEM windshield other than on the Kia mini van. The possible causes of your crack-out may be moisture in the star that was pushed to the end of the leg by the resin, only to freeze and cause a crack, or as you say doubtfull resin. This is an other example of use only known quality resins such as Delta's(saving you the effort Jeff ) or other top brands. another source of water in the resin may be condensation, if you bring your injectors(assuming they are a quality stainless steel) form the cold into a hot garage, condensation forms on the inside of the injector, mixing water in with the resin.

Hope this has helped

Sorry I just read your location, I doubt you have freezing problems. But the trapped water may have caused it anyways, water expands when heated, if you have water under pressure, it may have expanded and caused the crack(did it crack in the sun or at night?) . Just for trivial sakes it's 30 deg f with 40mph winds(I live in the middle of some very large fields just north of lake Champlain(border of VT and NY and Quebec), the wind has time to speed up, and cool down.

Merci