69Boss302
Has mile high skills
There are 2 layers to a modern windshield. The outer lite that the bugs hit, the PVB and the inner lite. If it is difficult to tell which side it is on, run the tip of a sewing needle across the glass. It will catch on the break and you'll know right away.
I have seen it happen several times that the outside will not break but the inner will. It is possible to repair the inner layer. But to do that the windshield would have to be removed, flipped over and then worked on. There are two different injectors used to deliver the resin. One uses a vaccum cycle first to remove air from the break and then inject the resin. The thought behind it is by creating a vaccum the resin will flow freely into all of the break. This system is very expensive compared to the alternative.
The other method, and the one I use, is cheaper and yields the same results. Inject the resin in and then pull a vaccum. Since the resin is heavier than the air, the air pulls right through. And every single time I did that it was soo cool to watch. Do one or two cycles like this and you"re done.
Whichever method is used, neither are effective ways to repair a break on the inside. Resin seeps out of the breaks before it is cured, then you have to inject a liquid upside down (gravity working against progress) and the inevitable mess in the interior and the cost of repairing the damged interior from your resins. On the outside, it simply runs on the windshield and can be wiped up with a paper towel.
I have seen it happen several times that the outside will not break but the inner will. It is possible to repair the inner layer. But to do that the windshield would have to be removed, flipped over and then worked on. There are two different injectors used to deliver the resin. One uses a vaccum cycle first to remove air from the break and then inject the resin. The thought behind it is by creating a vaccum the resin will flow freely into all of the break. This system is very expensive compared to the alternative.
The other method, and the one I use, is cheaper and yields the same results. Inject the resin in and then pull a vaccum. Since the resin is heavier than the air, the air pulls right through. And every single time I did that it was soo cool to watch. Do one or two cycles like this and you"re done.
Whichever method is used, neither are effective ways to repair a break on the inside. Resin seeps out of the breaks before it is cured, then you have to inject a liquid upside down (gravity working against progress) and the inevitable mess in the interior and the cost of repairing the damged interior from your resins. On the outside, it simply runs on the windshield and can be wiped up with a paper towel.
Last edited:
