Hi, am getting controversial messages about the above topic so would really appreciate if anybody has an experience of it. In our new place previous owners replaced a bath under a UPVC window with a shower enclosure. One side of it is glass and the shower is over a low tray. The window is narrow and spans the width of the wall so that when you shower water sprays directly over it. We can't open the window so obviously something went wrong in the installation. Now, I spoke to a couple of window installers and window manifacturers and it's 50/50. I'm being told that this combination always leads to problems and that there are types of windows that would withstand bathroom conditions. Does anybody have the same set up that works? We really can't afford to redo the bathroom yet.