hi guys another question thanks very much for everyones advice both previously and hopefuly in advance very much appeciated.
question: like an idiot i have forgotten to order the durabase wp sealing tape which
apparently you site in the corner of the walls before applying the durabase wp membrane however the tiler is arriving wednesday dont think i have a chance of getting it before he arrives i live on the wirral near liverpool looking at it on the internet it looks exactly the same as the membrane therefore can i get the tiler to just fold it around the 90 degree internal corner ? surely its even less likely to leak as there are less joints anyway ? cheers guys

You can yes but you will also needs corner pieces but a good tiler will be able to make them as well from the membrane,

once again thanks very much dave i really appreciate your help