Remove any remaining dust oils and grease from the wall with tsp tri sodium phosphate or an ammonia based cleanser.
How to clean newly laid wall tiles.
Depending on the surface area you must cover use a mop or soft.
Mix 1 part white vinegar to 4 parts water in a bucket or large spray bottle.
Run a dry cloth over the tiles to remove any leftover and dry the floor.
I simply searched tile safety in the bathroom there is a section about tiles and how they must comply with australian safety regulations and that some imported tiles do not meet this compliance.
Wipe over each tile individually using one smooth pass flip the sponge and make another pass.
A damp microfibre mop is better than a wet mop for a streak free clean avoid the use of cotton and sponge mops.
Remove traces of adhesive mortar on the tiles with a damp sponge that you ll rinse frequently.
To use vinegar on porcelain or ceramic mix four parts water with one part white vinegar.
You can add more vinegar to make the mixture stronger if needed.
The mop should grab the surface and lift off most daily grime with a little pressure.
Vacuum to remove dust.
For a thorough clean use the miracle tile stone cleaner available from beaumont tiles with warm water and a damp microfibre mop.
Additional vinegar can be added for extra strength.
When you re laying the tiles.
Scrape the wall to remove any texture and to create a flat surface.
Wipe the tiles using a soft cloth dipped in the vinegar mixture.
Rinse and wring between each tile.
Wash the tiles again with plain water to remove any remaining vinegar.
Patch any holes or cracks with spackling compound and sand the entire surface with medium grit sandpaper.