Imagine driving down a highway, seeing a pebble shoot out from the tire of the vehicle in front of you and hit you smack in the windshield, leaving a nasty little chip. You are told that these chips need to be fixed before they spread, but you just don't have time. Auto glass repair kits are a possible solution, but use with care.
Windshield damage can be a major and expensive irritation. If you keep ignoring a chip, it becomes a crack and keeps spreading. Often, it's not repaired because of lack of time. Being able to fix the chip at home would make a huge difference. Many people use these kits successfully. It's best to ensure yours is a good quality kit with all the tools you need.
While repairing your windshield at home is very effective for smaller chips and bulls-eyes, there is a lower success rate when it comes to cracks. If cracks are deep, long or spreading fast, it may be wiser to take your car to a professional.
If you are doing an at-home job stay out of direct sunlight. Repair your windshield in the garage, or find a spot of shade. If you do it in direct sunlight, the sun dries up the resin before you can complete the job properly. The result will be a messy, badly repaired windshield.
If you make a mistake on your windshield fix job, it can be very problematic. Experts say that they cannot fix a faulty home repair. Once the resin is dried they cannot do anything. People have effectively ruined their windshields with home fix-up jobs.
So while auto glass repair kits can be a very convenient solution, they are not the only solution. There are limits to what you can do with it. When the job is bigger then you can handle, it's preferable to go to a professional.