Hello,
The issue has been a difficulty at the underside on the double windows of the dormer. With particular wind and rain combinations of weather, water run-off gets blown/sucked underneath the windows and inside. A receding draft brush floating in the underside of the bottom rail resolves the great majority of the problem however with particularly directed winds some water would still intrude. My final solution was to mount planters beneath the windows with the plantings acting as wind breaks.
Please help.
I didn't find the right solution from the Internet.
References:-
https://bit.ly/2HJ3UXN
Debit Card Video
Thanks