I'm going to be replacing an old 1992 vintage GGL 606 combination next spring. Starting to plan for it now. I need 2 x SK06 windows / EKW SK06 2021M flashing and ELX Flashing adaptors ( to be able to use existing linings). However the Top row of tiles on the old windows look like they are unsupported / Incorrect . Pls ignore the Bird mesh in the photos but certainly it seems like something in the way of support isn't right. These windows have been fitted since house was built in 1992 and haven't caused any problems or leaks. My question
is how do I avoid this Tile droop on the top row when I eventually fit the new windows / Flashing
is how do I avoid this Tile droop on the top row when I eventually fit the new windows / Flashing