Removing Coatings and Sealers from Stone

Slightly different story for you below; this time from the medieval town of Tewksbury which dates all the way back to the 8th century. A customer there had asked if there was anything that could be done to restore the appearance of their polished Limestone kitchen floor on which he had previously applied a wood sealer which had turned the tiles brown. I inspected the floor and ran a test clean on a small section of tile which successfully removed the wood seal. This gave the customer the confidence to book me into to complete the job which I estimated would take three days to strip off the old sealer, deep clean and reseal with a more appropriate product.


You probably can’t appreciate how bad the tiles looked from the photograph above but if you look at the indicated area under the kitchen units where the kick boards have been removed you can really see how the brown stain in the wood sealer has darkened the look of the tile.

Removing Old Sealers from Limestone Kitchen Floor

On the first day I prepared the area by removing the kick boards from the underneath the kitchen units so they wouldn't get affected by the cleaning process and started wetting the floor with water. The water lubricates the burnishing process whereby coarse diamond encrusted pads are applied to the floor with a buffing machine. We started the process using a very coarse 100 grit milling pad to remove the wood sealer before moving onto the finer pads from 200 grit, 400 grit, 800 grit and finally 1500 grit pad building the finish of the floor as we progressed. The floor is rinsed with water between pads and the slurry is removed using a wet vacuum. This burnishing process took up all of the first day so the next day I returned to focus on the edges I had missed and the grout lines, being a relatively small format tile for Limestone there was a lot of grout to cover. I tacked the grout lines with Remove and Go which is a powerful stripper and cleaning agent which is applied along the grout line and then scrubbed in with a narrow stiff brush before being rinsed away with water. The edges were treated with a set of small six inch milling pads fitted to a hand held buffing machine in a similar process as on the first day.

Sealing a Limestone Tiled Floor

On the third and final day the floor was spray burnished which a process is involving a very fine 3,000 grit floor burnishing pad and a little water spayed onto the floor during the application. This process really tightens up the pores in the stone and restores its appearance. After making sure the floor was free of any lose grit I then proceeded to seal the Limestone with Tile Doctor Ultra Seal which is a natural look sealer that doesn’t alter the appearance of the stone but penetrates into the pores of the stone to protect it from within. I left it to dry for an hour then buffed the floor with a white buffing pad before apply a second coat. This was also left to dry for an hour before running the buffing pad over for a last time.


It took a fair amount of work to get the floor looking back the way it was meant to be but I’m very pleased with the outcome and more importantly my customer was really happy.




Source: Limestone Cleaning and Sealing Service in Gloucestershire

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To read more on this topic click here

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This Limestone tiled floor was around 50m2 and installed in Kitchen and Hallway in a new build style property in Newmarket, 'The Home of Horse Racing'. The property was only 3 years old and the owner was having difficulty keeping the floor clean. Cleaning Limestone Floor Tiles The first step Read more...

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To read more on this topic click here

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To read more on this topic click here

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