Dear Diary...it rained today! (See previous post for explanation.)
This weekend I needed to re-glaze an old window. I tackled a similar project once before and felt confident that I was up to the task. However, as is often the case with DIY, the project turned out to be more problematic than I anticipated!
First off, it appears that previous glazing repairs were made with either concrete or plastic/epoxy compound filler. As I worked the putty knife gently around the perimeter of the glass, the oldest glazing broke away freely (as it should) but the newer patches were more resistant. I applied increasing amounts of pressure only to prove a known fact: pressure and glass are not compatible. I watched the first pane crack and adopted a more gentle hand in working on the remaining panels. In the end, I had shattered each of the four panes. I had certainly achieved what I intended—clearing away the old glazing—but at the cost (less than $20) of having to replace four 8 x 10 panes of glass.
After a quick trip to the lumberyard, I was ready to install the new panes and re-apply glazing. Getting a good and consistent bead was challenging, but with a little trial and error, I was able to complete the project satisfactorily. This link from the Do-It-Yourself website will give you a good idea of what it takes to glaze windows. Of course, it looks easy when a professional glazer tackles the job.