8. Now we are ready to assemble your energy efficiency. The glass panes will go to Joe in glass pack assembly. First, we apply the thermalset rubberized composite to the glass with a heat gun that will bond it to the glass surface. Once the material is applied all the way around, our clean surface glass lift will rise and the next pane will be applied. The glass pack then rolls through this machine that heats the last pane so the rubberized composite and glass panes are attached and sealed.