FAQ > General Questions Knoxville's Finest Auto Glass Installation Center •  How long will it take to replace my windshield or other auto glass?  What we would call a normal mobile auto glass installation usually takes from 30 to 90 minutes. Installations that take longer  than 90 minutes are what we classify as difficult installations.  For obvious reasons it is not practical for us to do these types of  installations in the field so they do not qualify for our Mobile Service.  As a rule they require that the installation be performed  and monitored for a period of time in our Service Center.  Some of these types of installations are timely because they are  done in stages, some of which cannot be accomplished until the adhesive has cured for a minimal amount of time.  Most vertical set windows such as pickup truck back glasses require being held in place by  different manners and for many reasons (paint  damage being the main one) need to be done in and  remain in our Service Centers controlled environment until the adhesive cures for a minimum of 24  hours. Most door glasses that operate in a mechanical up and down manner average 30 to 60 minutes to  install and you will be able to operate them immediately.  In the event there is a urethane bonding  system involved you may not be able to operate your new window until the adhesive cures for a  minimum of 24 hours.  There are many different types of vehicles out there in today’s world.  Each of them have their own peculiarities. Your  customer service representative at Phoenix Glass will be more than happy to answer any questions you may have for your  particular vehicle.  • Will you vacuum up the broken glass? Absolutely!  Don't touch that mess and risk getting cut.  We'll vacuum up your broken glass when we come out to do the job or  when we do it at our Service Center.  We do our best to make your vehicle the best we possibly can.  • How soon can I drive my vehicle after my glass is replaced? That will depend on the type of window as well as they type of urethane adhesive used to install the auto glass in your vehicle.  While most automotive grade urethanes rely on temperature and humidity to cure, the time required varies widely depending  on the manufacturer.  This time frame can range from as little as 3 hours to as much as 24 hours and sometimes even more  before your vehicle will meet Federal Motor Vehicle Safety Standards and is considered safe to drive.  If you need to drive your  vehicle sooner, a more expensive chemically cured urethane can be used that will allow a 1 hour drive away time.  In either  case, it's imperative that you follow the manufacturers' instructions regarding safe drive away times.  Not adhering to those  instructions could result in your injury or even death.  • How do I know your installers are qualified? Your Phoenix Glass auto glass technician keeps up with the times and processes a high degree of understanding of the ins and  outs of auto glass replacement.  They are familiar with the proper tools, methods of removal, preparation of the pinchweld and  possess the knowledge of the many different adhesives available that will provide the strength to hold the glass in your vehicle.  Along with all that they also understand and use the proper methods that prevent leakage and rust around the pinchweld  where the auto glass bonds to the vehicle.  Phoenix Glass technicians have as much as 40 and none less than 15 years of auto glass experience and have literally installed  thousands of windshields, back and side glasses.  You can rest assured that your new glass will be properly installed and your  vehicle will be restored to the factory specifications or better.  • What kind of warranty will I have? Your warranty covers defects in materials and workmanship for as long as you own your car.  (Pre-existing rust or body  damage would void this guarantee.)