1956 home with original aluminum casement windows. In the master bedroom, two windows (each 36”H x 48”W) meet at a corner in what appears to be a custom join. Cool window, but broken in multiple areas, prone to mold and not energy efficient. Stucco exterior.
I cut the stucco to expose the mail fin, and bought two standard PlyGem vinyl windows. My question is, how do I join the windows at the corner?
Other houses in my neighborhood have the same build, but with upgraded windows (retrofit and new construction). For the new construction replacements, there appears to be a plastic/other corner cap (the windows are not meeting at a stud support).
The video below shows my scenario where they use a corner mullion/cap that inserts into the nail fin slots o of a certain kind of window. I can’t find that type of mullion anywhere.
Anyone know of a solution/product here? I will be calling PlyGem but suspect I won’t get much help there.
On another note, since the custom join is so small, and neighboring houses with new construction windows don’t have corner stud supports, i presume the existing join is not load bearing. May have to open up the walls to see.