An alternative method would be to use mirror headed screws through the tile and the wedi marmox board to make a whole section of the bath panel tile wedi board removeable.
Tiled bath panel access hatch.
Suitable for all tile thicknesses.
Hi yabbie you can buy purpose made panels but it s far easier to make your own mark out wher you panel is to go but take it to a grout joint where your tiles would be fixed cut out your panel leaving an inch overlap into the panel fit a couple of timber lats on the inside to give some strength to the panel the panel your left with can be tiled the tiles will now overhang the panel by a.
One more step then you re ready for tile.
You can see how the left side access panel sticks out a bit further than the piece next to it.
A wall access panel is ideal for creating concealed access in tiled wall coverings.
You can then decide the size and placement of the access panel as it is aesthetically better to make it to the size of say 4 full tiles rather than having to cut tiles and therefore having an unsightly line through them.
They are used in a tiled surface to ensure there is access to services behind the bath panel such as waste pipes and tap fitments.
They can also be used on vanity basins where there may be the need to get to pipes and services in the future.
Larger tiles require additional magnets.
Adapts perfectly to joint pattern.
Suited for tiles measuring up to 12 x 12.
Tile the room first this will allow you to plan the bath panel tiling accurately by lining the bath panel tiles up with the wall.
Schluter rema is a system for creating concealed access panels in tiled walls without impairing the visual appearance of the tile covering.
This approach would be trickier to do and would not be as seamless a finish as the other method outlined above but would allow for a larger access panel.