The tiling scheme will largely dictate where to start tiling and how the wall should be marked out for tiles start by measuring the height from the lip of your bath to the top of the planned tiled area.
Tiling around a bathtub lip.
Then apply a generous amount of thin set to the bottom bathtub tile and position it 1 8 in.
The best approach when installing cement board or other tile backer around a tub is to keep the cement board out of the lip area.
I cover some of the specifics of how to layout and set up a tub to install tile around it.
To tile around a tub or shower start by measuring the height of the back wall from the lip of the tub to the top of the area to be tiled.
This video will show you how to set tile around a tub.
Place the cement board.
Check if you need to adjust this mark to avoid laying slivers of tile at the top and bottom.
The cement board must be.
Above the lip of the tub.
Secure the 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.
You may wish to alter this height if possible to minimise tile cutting.
Fill the gap between the tile and the tub with caulk.
How to install tile around a tub with a lip 1.
I am tiling a greenboard wall above a bathtub.
Mark a horizontal line around your bath at this height.
Apply it to the wall with the bottom edge about 1 4 in.