Double glazing a stained glass window refers to the act of encapsulating the decorative stained glass in between two panels of glass. This not only protects the stained glass, but helps keep your home safe from intruders and improves the heat and sound insulation in your home. Double glazing a stained glass window requires knowledge of windows and window installation. Many people choose to use professionals for this job, as it is not an easy do-it-yourself project.
Select and purchase two vented windows which will be installed on either side of your stained glass. These windows should be single-pane, and at least 4 mm thick. Glass less than 4 mm thick may not provide the insulation benefits of double glazing.
Drill one 2-inch screw into each side to hold the window in place. Place this screw into the upper side jamb, through to the framing.