I have just moved into an old house that I have renovated. Nothing is straight and the entire bathroom is on a slight slope. I have a shower over the bath and a shower curtain. On using the shower for the first time I noticed that water runs along the back of the bath where the bath meets the wall, and then runs down the side of the bath and creates a huge puddle on the floor. Is there some way that I can prevent this happening without just making some ugly barrier?