How long does an installation take? Typically, your old windshield can be removed and the new windshield replaced in an hour. When can I have the work done? In most instances, if the part is available, your replacement can be made within 24 hours, and in many cases, the same day. Is the quality of the glass replaced equal to the glass currently in my vehicle? Guardian is an original equipment manufacturer for a number of domestic and foreign vehicles. In addition, all glass installed complies with the applicable specifications of the American Standard Safety Code for Motor Vehicles. Does Guardian manufacture RV windshields? Yes, Guardian is a world leader in production of RV windshields. Do you provide service nationwide? Yes we do. Our call center in Worthington, Ohio is equipped to handle all of your automotive glass replacement requirements. Is the work guaranteed? Yes! Guardian's limited warranty is honored at all Guardian Auto Glass locations.