Any stained glass window can be structured into modern green building. The leaded glass is sandwiched between glass panes that are slightly larger than the art work. The edges are sealed by a soft, water-tight compound. The advantages are insulation from heat and cold, and also physical protection from heavy storm winds. From a few feet away, the sandwich is invisible, with clear color by day or night. The only disadvantage is that neither you nor your visitors will be able to take pleasure in running dirty fingers over the lead work or glass textures. NOTE: In planning your installation, be aware that thermal sandwiches increase the window’s dimensions by one inch for both width and height, and adds an extra 1/2-inch in thickness. Costs for window fabrication increase, but not exorbitantly. However, weight does increase significantly, which affects shipping costs.