How To Install a Panel Over An Existing Window

by Gary
(Jasonville, Indiana USA)

I read in your tutorial you can not only install a window to replace an existing window, but you also said you could attach it over a window. I just wondered how you went about this procedure? Perhaps I missed that in the reading and it's me, and if so, I apologize.
Thank you for this site though, it really makes me want to try lead now. You've inspired me!

Answer
When a stained glass panel is installed over an existing window you have to take into consideration heat and moisture build up between the 2 pieces.

You must leave an air space, of at least 1/2 inch, between the stained glass and the window glass. The stained glass panel should be built about 1 inch shorter than the opening. The exact measurement will depend on the size of the beading you will be using to hold the panel in place. You will see why farther down in this explaination.

When you install the panel, place some shims under it so that it is lifted up, leaving the same amount of space above the panel as below. You are doing this to create air circulation between the existing window and the stained glass.

Drill several holes through the beading that will hold the top and bottom in place. Make sure the holes are below the bottom and above the top of the stained glass panel. Those holes will allow air flow between the 2 pieces of glass which, in turn, will prevent heat and moisture build up.

Of course, the other way you can put a panel over an existing window is to hang it in front of the window. That would eliminate the installation process and would be much easier to do. The panel could be close to the size of the opening, but by hanging it, you would get away from the heat and moisture problem.

Sue