kilty55

hi guys,im starting to gather info on doing a full wetroom for my parents in the near future, the room is on 1st floor with chipboard floor and plasterboard walls,,if im using wediboards do i fit the wedi tray and boards directly on to the chipboard and tape and seal the joints?? also would the joints need tanked for extra water resistance? walls i was thinking of putting water resistant plasterboard up and then tanking them also,is this sufficient to make a wetrooom or should i use a thinner wedi board on top of water resistant plasterboard for the walls using tape and tanking to finish?? any help would be greatly appreciated as usual