Backerboard Installation Option
Create a rough opening with nailing blocks.
Apply caulking and nail QuickShelf (flange) over
installed backerboard.
Skim coat setting mortar from flange to wall for a smooth transition.
Install tile directly to QuickShelf with 100% latex modified thin set mortar, or siliconized caulk. Skim coat back of tiles to ensure full contact.
Allow 24 hours before cleaning or grouting.