The photos below show the repairing process of thirteen windows from the Saint Duthac's church in Dornie, a small Scottish town in the Caledonian Mountains. Simple geometric windows with greenish glasses come from 1860. The year of creation was discovered by us on one of the elements on which the date and name of the author were etched. The stained glass condition was critical - twisted, broken lead, cracked glass. It was necessary to completely replace the lead and thus dismantle all the windows, and then reassemble them back. The final stage was to add the putty and attach thick windbreakers - bars reinforcing the structure. Now the windows will certainly last at least another 150 years!
In the picture below, you can see reinforcing bars, protecting the window from deformation. For finishing we used a color-matching mortar.