Its important to note that the automobile windshield chip repair exterior trim and moldings that we can see on the outside of the glass are for looks only. The actual water seal comes from the "urethane" adhesive which is used to create the bond. Its in this urethane that the water leak is originating.
By having a look, they can decide if you need windshield auto glass replacement or whether an adhesive will do. Smaller cracks are fixed with adhesives that stick to windshields and reinforce the material. They can also let you know how long it will take to fix and how much it will cost you.
Many of us may not be concerned with all the small details that go into windshield repair, but those trained to do the job know that missing a detail can be fatal. The purpose of the windshield is not just so you can see. There are other very important functions like keeping the car roof from caving in on you if you have a rollover; or, protecting you in a serious accident. It helps the airbags deploy properly as well.
Next we have the windshield repair kits priced in the middle. They range in price from $600-$2,000. These are the companies that normally offer high-quality repair kits at a an affordable price. But not all of them.
If the crack looks exactly the same when completed, it's very likely the technician didn't inject the resin properly. A properly completed repair with cause each area of the damage to disappear from at least from one angle of vision (ex: looking from one side, looking from below, looking from above, etc.).
Not all chips and cracks can be repaired when windshield damage occurs. It is definitely worth the time to have any damage evaluated by a professional to avoid further cracking and damage and eventual replacement.