There were five of these little hopper windows in a small church. The larger windows above them were in better condition because they don’t move. Much opening and closing of the hoppers, combined with a fair amount of water and little maintenance had lead to them looking like this. It might not look like it, but under the grime, the glass is completely fine apart from a few cracks.
Tracing the lead lines to use for rebuilding later. Often old panels like this don’t have straight lines, and to re-use as much of the old glass as possible this has to stay the same.
After partial cleaning, carefully removing the glass from the lead matrix.
Some of the finished panels.