How to Deep Clean Slate Tile and Grout by Berkshire Stone Expert

This customer in Thatcham, near Newbury in Berkshire had inherited a rare semi-riven Slate floor with their kitchen. However, years of dirt and contaminations had built up and left the Slate looking dull and the grout discoloured.

 

Slate is a very popular floor and wall tile due to its low porosity; there are many varieties and textures of slate available, it does need to be sealed though to keep the dirt from becoming ingrained in the stone. Unfortunately, the previous owners had not maintained the sealer and owning four dogs had probably used a strong acid cleaner on the floor which will have shortened its life. Inevitably time took its toll on the tiles and it was now overdue a deep clean and new sealer.

 

Cleaning a Semi-Riven Brazilian Slate Tiled Kitchen Floor

The first job was to apply a strong dilution of an alkaline detergent called Tile Doctor Pro-Clean which was applied and left to dwell for several minutes before agitating with a rotary floor buffer fitted with a scrubbing pad. A stiff brush was also run over the grout lines to get them clean.

I worked in sections and then used a hot water encapsulation system that is used a lot by carpet cleaners to remove the slurry and get the floor as clean as possible. After inspecting the floor, I could see a few stubborn areas than needed more work, so the process was repeated until I was satisfied the Slate tile and grout was as clean as it could be. The floor was then left to dry overnight

Sealing a Semi-Riven Brazilian Slate Tiled Kitchen Floor

The following morning, we returned, the floor looked nice and dry but I took several moisture readings with a damp meter just to be sure. All was in order, and I was able to progress onto the next step of applying a fresh sealer to the floor.

For this type of tile and conditions I chose to apply Tile Doctor Seal and Go which is a water-based sealer (no smell as it dries) that works really well on Slate. Multiple coats were required and each coat is left to dry before applying the next. The seal is very hard wearing, perfect for high traffic areas such as the kitchen and it leaves a lovely sheen without making the floor appear too shiny.

 

The customer was very happy with the outcome and left the following feedback on our website:

  “Extremely professional from point of contact till completion of the job, Dennis has done a magnificent job of my tiles. And I would highly recommend his services”
Before leaving made sure to leave a complimentary bottle of Tile Doctor Neutral Floor Cleaner to help maintain the floor going forward. This is a pH neutral product which makes maintenance of the floor easy and ensures that the newly applied sealant will stay in place and not be compromised. As mentioned before most people, including I suspect the previous owner, tend to use supermarket products which are far too harsh and break down the sealer taking them back to square one.

 

Source: Slate Tile and Grout Renovation in Berkshire

Renovating a Brazilian Slate Tiled Kitchen Floor in Lancashire

Rough Slate is notorious for homeowners to maintain as dirt can quickly become trapped in the rough surfaces. The example on this page is that of Brazilian Semi Riven Slate installed in the Kitchen of a house in the village of Hornby, which while naturally cleft from the rock loses none of its texture and style and yet has a much smother appearance than the typical rough Slates from China. Less processing means it’s not quite completely smooth but it is a lot less expensive to buy than say a honed or polished Slate which is more difficult to maintain due to various polishing techniques required to keep up the appearance. Brazilian Slate is in fact one of my favourite slates to clean and also one of the most rewarding of Slates to seal as the sealer really does bring out the colour and character of the stone.

Sealers provide a protective barrier on natural stone floors and without it dirt can penetrate into the pores of the stone making it more and more difficult to clean effectively. Unfortunately on this floor the new homeowners were unaware on what sort of Stone it was and had no idea how to look after it which resulted in the sealer wearing down prematurely and the floor becoming dull and un-inviting.

Cleaning Black Semi-Riven Brazilian Slate Tiles

To restore the appearance of the Slate floor we started by taping up the edges of the new kitchen units to protect the wood from splashing. This was followed with an application of a strong dilution of Tile Doctor Pro-clean worked in with a black buffing pad fitted to a buffing machine running at slow speed (working at a slower speed results in less splashing). The pads can struggle to reach the edges and corners so these were cleaned by hand.

Once we had finished on the main floor area we then concentrated on the grout using a steam cleaner and more Pro-clean scrubbed in with a narrow stiff brush.

Last step of the cleaning was to rinse the floor with water to remove any trace of cleaning products from the Slate and then dried off the floor the best we could with our high wattage wet vacuum machine and left the floor to dry off naturally over night.

Sealing Black Semi-Riven Brazilian Slate Tiles

The next day we returned to seal the floor checking first that the floor had completely dried. The customer had requested a matt finish however we have worked on Brazilian Slate many times before and we knew how good they can look with this Satin finish sealer. Naturally its the customers decision so we offered to do a test piece and let them decide if they didn't like it we would strip off the test piece and apply a Matt finish sealer like Tile Doctor Colour Grow instead.

The floor was dry so a couple of coats of Tile Doctor Seal and Go were applied to one Tile so that they could appreciate how it would look. Luckily the customer agreed with us and so we set about sealing the whole floor with Seal and Go.

To speed up the drying process Air Blowers were installed as we worked and it wasn’t long before the sealer was dry and the customers were able to walk on the floor and inspect every area before we left. I’m please to report that they were over the moon with the floor and my recommendation of sealer.


To maintain the slate tiles going forward we always give our customers a free bottle of Tile Doctor pH neutral tile cleaner, which is a little incentive for them to provide some feedback via our website. 


Source: Slate Tile Cleaning and Sealing Service in Lancashire

Restoring Slate Tiles in Historic Stratford

This beautiful Brazilian Slate tiled floor was installed in the cellar of a house in Urmston, Manchester; the slate has never been sealed as so as you would expect it dirt soon became ingrained into the pores of the tile and it lost its appearance. Cleaning slate Floor Tiles I gave the floor a Read more...

Brazilian Slate tiled cellar floor in Urmston, Manchester

This beautiful Brazilian Slate tiled floor was installed in the cellar of a house in Urmston, Manchester; the slate has never been sealed as so as you would expect it dirt soon became ingrained into the pores of the tile and it lost its appearance. Cleaning slate Floor Tiles I gave the floor a good deep cleaning using a dilution of Tile Doctor Pro-clean which is an alkaline cleaner safe to use on natural stone such as Slate; I should mention this is an industrial strength product and it's very good at removing general dirt, grime and even grease. I let the product soak into the tile for five minutes before scrubbing it into the slate using a black scrubbing pad fitted to a rotary machine. Pro-Clean was also used along the grout lines to get them clean, although this had to be scrubbed by hand with a stiff brush. Finally I gave the floor a through rinse using hot water to make sure that no chemical remained on the tile before sealing and then left for the evening so the floor could Read more...

Brazilian Slate tiled cellar floor in Urmston, Manchester

This beautiful Brazilian Slate tiled floor was installed in the cellar of a house in Urmston, Manchester; the slate has never been sealed as so as you would expect it dirt soon became ingrained into the pores of the tile and it lost its appearance. Cleaning slate Floor Tiles I gave the floor a good deep cleaning using a dilution of Tile Doctor Pro-clean which is an alkaline cleaner safe to use on natural stone such as Slate; I should mention this is an industrial strength product and it's very good at removing general dirt, grime and even grease. I let the product soak into the tile for five minutes before scrubbing it into the slate using a black scrubbing pad fitted to a rotary machine. Pro-Clean was also used along the grout lines to get them clean, although this had to be scrubbed by hand with a stiff brush. Finally I gave the floor a through rinse using hot water to make sure that no chemical remained on the tile before sealing and then left for the evening so the floor could Read more...

Restoring Slate Tiles in Historic Stratford

This beautiful Brazilian Slate tiled floor was installed in the cellar of a house in Urmston, Manchester; the slate has never been sealed as so as you would expect it dirt soon became ingrained into the pores of the tile and it lost its appearance. Cleaning slate Floor Tiles I gave the floor a Read more...

Brazilian Slate tiled cellar floor in Urmston, Manchester

This beautiful Brazilian Slate tiled floor was installed in the cellar of a house in Urmston, Manchester; the slate has never been sealed as so as you would expect it dirt soon became ingrained into the pores of the tile and it lost its appearance. Cleaning slate Floor Tiles I gave the floor a good deep cleaning using a dilution of Tile Doctor Pro-clean which is an alkaline cleaner safe to use on natural stone such as Slate; I should mention this is an industrial strength product and it's Read more...