I have a problem where the best bathroom lay out will mean that the over bath shower will be directly next to the double glazed bathroom window (UPVC not timber), the window will be glazed with satin glass. A large amount of water spray will end up on the window and sil. I will ask the sil is angled so the water doesn't rest there.

Apart from thinking of another lay out for the bathroom, is there anything you can suggest to make the window more watertight/ less likely to rot/fall out or any coverings screen you know of .
Am going for modern look with clean lines so don't want a shower curtain put up against the window.
The window is quite big, about 1000mm by 800mm and takes up the majority of the width of the wall the bath will be against.
Thanks.