Because the cost of removing the exterior drain pipe, then removing the entire window for a normal repair was prohibitively expensive, I had to devise a way to repair the window in place. Because the window was inset between two beams, it presented both a challenge and the solution. I realized I could make an overlay to line up with the current zinc came but how would I attach it to the window to keep it from sliding down? The answer was to use the original H came as a resting point for some tabs I built onto the new overlay. The new overlay is held in place with the tabs inserted in the original H came and weatherized with silicon glue. Looking straight on (which is the only view you can get due to the beams) you don't notice the overlay.
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