The importance of a properly installed windshield It is highly important to have your windshield installed properly. This is something that cannot be ignored. There are much more risks behind a windshield when not installed correctly than you think. A windshield not properly installed can cause water damage, leakage, serious injuries if an accident occurs and even worse, death. You could be putting at risk your familys live and yours. You owe it to yourself and your loved ones to have your windshield replaced the correct way.