Changing the Insulated glass unit out of your window because it is failed or broken is something we do all the time. When you make the call, we come out and measure the glass for the unit. We call back with an estimate. You like it, then we get the unit into production. It generally takes three to five business days to have the unit made. Once we have it ready we schedule a time that works best for you. So with this process you are never without your window and we can fix your glass panes and clear up your view out of that window.