Glazing a Vinyl Replacement Window

Once the insulated glass unit (IGU) is complete and the vinyl sash and frame have been completely outfitted with the necessary hardware, the two main parts of the assembly are ready to be married together.  This process is known as the glazing process.  A window is considered glazed when the IGU is inserted into the sash frame.  A glazing compound is applied to the sash just before the IGU is dropped in and it creates a seal.  A glazing bead is affixed to the frame in the notched out area and it creates a tight weather tight seal making the window a complete energy efficient unit.