Cleaning outdoor terracotta tiles is a whole other project seperate from cleaning indoor terracotta tiles.
Terracotta tile cleaning and restoration.
If after 15 minutes the water has soaked into the floor the tiles will need to be impregnated with boiled linseed oil.
This will darken the tiles a little so to get an idea of the finished colour wet the tiles to assess the effect.
Terracotta tile floors can be stripped with a machine and a water based stripper like every other tile floor for 99 per square foot.
How to seal terracotta tiles.
The waxes and polishes originally applied to saltillo mexican tiles terracotta and pavers them easy to clean and maintain but after many years buildup and soiling becomes evident.
The most important part is the acid cleaning solution.
The elemens such as rain and algae pose a luminous.
Example of restoring an old terracotta tile floor which had been left untreated for many years and had become badly stained.
Test your terracotta tiles for porosity by placing water in the middle of a tile.
The best way to clean terracotta and or saltillo tiles is on your hands and knees using brass tipped bristles and green scrubber steel will scratch and damage.