Was investigating some leaky windows and wasn't expecting to see this configuration for replacement windows. These were done on the entire home 2 homeowners ago, now about 8 years old.
It looks like block frame windows are resting inside of the old aluminum frame. Flashing was installed and caulked to just the window and stucco or window and wood trim.
Is this a valid replacement method? I was expecting to see some kind of integral flange caulked/bonded to the old frame, not a separate piece of trim.
Recommendations on what to do if anything?