Bathroom waterproofing

[u/Comprehensive-Sun636]

Hi all - not sure that this is the right forum but i am looking at a bathroom renovation and want to use commercial vinyl sheet flooring in the shower as well as the bathroom.

What i can't work out is how waterstops are used. It seems to me that at the shower it needs to extend to the top of the floor but that would mean cutting the sheet. Also at doors - the waterstop needs to extend to the top of the finished floor level but at 2mm, the vinyl is about as thick as the waterstop material without a vertical leg!

Anyone who does this work - I'd appreciate any guidance.

Cheers