Hi. Once again thanks for the replies. Keep them coming.
Kaley. I've always wondered why shower trays don't come with a raised lip, then discovered that some do. I then investigated them further and found quite a few complaints. I would have thought that the four rim ones would solve a lot of issue at the intersection of the door frames and the tray. Especially since you are supposed to seal only the outside of frames.
What's the opinion of you fitters on these raised lip trays. I already have walls plastered and unsure at this point if they are square and true. If owt like everything else in this house, they won't be.
Ha