How to Clean and Seal Mexican Terracotta Flooring

I have lost count of how many Terracotta tiled floors we have cleaned and sealed over the years and the one thing it has taught me is to wary of Mexican Terracotta. This type of Terracotta is extremely hard to work with, its porous and made of soft clay which has usually been badly fired. Even if you do have all the equipment, experience and the right products it can be a challenge.


If you look at these pictures of this Mexican Terracotta floor, we recently worked on in Penrith you will see the tiles looked very dull before we cleaned them. Testing indicated there was still a sealer present however we didn’t know what type it was. Knowing what your dealing with really helps narrow down the best cleaning products to use which for Terracotta tiles tends to fall into one of three different categories.

• To remove wax-based sealers, we use Tile Doctor Wax Away
• To remove acrylic based sealers, we use either Tile Doctor Pro Clean for light sealer coatings or Tile Doctor Oxy-Gel for heavier coatings.
• To remove solvent based matt sealers we use Tile Doctor Remove and Go for light coatings or Tile Doctor Nanotech HBU for thicker coatings.

If you have the misfortune of having had Varnish laid on top of these tiles, then the job becomes significantly harder. Because of this we have to be flexible when pricing for the work, naturally if we give a quote and we use the wrong system then not only will we be out of product but also the extra labour time to get the job right for the customer.

Cleaning a Mexican Terracotta Tiled Kitchen Floor

On this occasion the sealer at this property in Penrith was of the more common acrylic type, so we used a combination of Tile Doctor Pro-Clean and some Tile Doctor Oxy-Gel for the stubborn areas. The products are applied to the floor and then scrubbed in using a black pad fitted to a rotary buffing machine. This releases the old sealer and dirt from the tile resulting in a slurry that is then extracted off the floor using a wet vacuum. The floor is then rinsed with water and extracted again to make sure all the soil has been removed.

Last step the cleaning is to treat the tiles to an Acid Rinse to further clean the tiles and equalise the floors pH level after the use of alkaline cleaners. We used Tile Doctor Acid Gel for this which was first scrubbed in, then rinsed with water and finally extracted as before. The floor is then rinsed down again with water to remove any trace of product and the wet vacuum used to extract as much moisture from the floor as possible so it can have a better chance of drying out overnight.

Sealing a Mexican Terracotta Tiled Kitchen Floor

We called back the next day to seal the Terracotta first checking in several areas with a damp meter that the floor was nice and dry. All was well so several coats of a Tile Doctor Seal and Go were applied to the floor for a nice mid satin finish.


The finished floor looked fantastic and was doubly improved by the grout cleaning which had responded well to the Pro-Clean. The customer was over the moon with the transformation in their floor which now looked clean and bright.

Before leaving we left the customer with a bottle of Tile Doctor Neutral cleaner for aftercare. To get the best from their Terracotta tiles it’s important that customers use the correct product for regular maintenance cleaning from the start.




Source: Terracotta Tile and Grout Cleaning and Sealing Service in Cumbria

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