Thank you for your question, mikey! The cement board or drywall will come as low as the top edge or lip of the nailing flange for the base. The tile or finished wall will be installed further down towards the base of the pan as seen on page 8, step 7 of the Maintenance and Installation manual. Sealant will be used to create a waterproof seal and prevents water from being wicked up into the backer board.
Best regards, Edward
Date published: 2019-08-12