There are essentially two different types of windshield-related maintenance situations – 1.) to just replace a window entirely, or 2.) to try to repair the damage incurred with some type of repair kit, shop treatment, etc. In all honesty, it’s probably obvious to most as to which option seems more sensible by virtue of just looking at the extent of their situation. For instance, if there’s a sizable crack or impact point (with cracks emanating outwardly from it) a complete replacement is probably going to be needed. (if not immediately than at some point in the future). The reason for this is simple – this type of glass tends to be under lots of pressure and with its high density structure it’s not uncommon to see gashes turn into long splits and so forth. In such cases you’re probably best served by just visiting a specialists shop or even better, your dealership and having them stick in a new one. Assuming that you’re interested in a basic repair option, here’s how it is generally done…
First off, you should really do this kind of repair in an area that’s temperature-controlled. Simply put, if you were to try this under a sweltering sun it’s very likely that everything won’t turn out as expected due to swifter drying times, etc. Secondly, you’ll want / need a repair kit – they can be picked up at any auto repair shop.
The initial thing to do is remove any loose pieces of glass in the ding; most individuals will use a razor blade-like implement to accomplish this. Once that’s finished, clean the entire area with soap and warm water then dry it off completely. Inside of your repair kit there should be a device with at least four suction cups which is to be positioned directly above the affected area. Positioning is important, so take your time and make sure that each cup attaches firmly to the surface. Next, you will find a repair tool of some sort in there which should slide into the suction-cupped apparatus, locate it and attach it as directed.
As a final preparation before we begin the actual procedure, look at the positioning again from inside of your vehicle (if possible). You just need the nozzle to be right on or inside of the damaged area. Now it’s time to add the resin if everything looks accurate. In most cases you only need to add around 2-3 drops, but then again this will depend on how big the chip in your windshield actually is. Next, quickly stick the plunger piece into the tube and tighten / smash it down on top of the resin that you just added. The idea here is to completely fill all the crevices and create a flat sort of surface to work with. Before you walk away and leave it just like that, remember to loosen it again and then retighten it down in order to eliminate any trapped gases (very critical).
After one or two minutes, you can remove the device and apply the included film which will flatten everything. While an hour or so is plenty of time for the resin to set, consider leaving it alone overnight to dry. Finally, remove the film and use a razor blade to scrape away any excess resin.