You may wish to alter this height if possible to minimise tile cutting.
Tiling around a bathtub lip.
Check if you need to adjust this mark to avoid laying slivers of tile at the top and bottom.
Use backboard screws to secure the cement board to the framing.
Place the cement board.
Apply it to the wall with the bottom edge about 1 4 in.
Secure the cement board.
Fill the gap between the tile and the tub with caulk.
Then apply a generous amount of thin set to the bottom bathtub tile and position it 1 8 in.
I cover some of the specifics of how to layout and set up a tub to install tile around it.
This video will show you how to set tile around a tub.
The cement board must be.
Unless there is already a backer board installed you must place a cement board.
I understand that the greenboard must be above the lip of the bathtub not overlapping or underlapping however using this method will create a 1 gap the length of the lip between the top of the tub minus the lip and the beginning of the drywall.
Above the lip of the tub.
Divide the dimension in half and make a mark there.
I am tiling a greenboard wall above a bathtub.
How to install tile around a tub with a lip 1.
Mark a horizontal line around your bath at this height.