The photographs below are of an 18m2 Yorkshire Stone floor in the kitchen of a barn conversion in the village of Hebden Bridge. The flagstones which appeared to be various shades of dark grey had lost any colour and vitality they once had, in fact they only seemed to come alive when wet and once dry the natural features and colours of the Yorkshire stone faded away. This was caused by the sealer being worn away allowing dirt to become ingrained in the stone making it difficult to properly clean.
Cleaning Yorkshire Stone
To restore the natural appearance the floor was soaked in a 1:2 dilution of Tile Doctor Pro-Clean and then scrubbed clean using a rotary machine fitted with a black pad. Pro-Clean is an industrial strength alkaline cleaning product that is safe to use on Tile, Stone and Grout; for best results you should let the Pro-Clean dwell on the floor for around ten to fifteen minutes before working it in. The soiled cleaning solution was removed using a wet vacuum and then the whole floor washed down with water and stubborn areas re-treated until I was satisfied that the flagstone and grout was as clean as I could get it.
Sealing Yorkshire Stone
The floor was left to dry overnight and I returned the nexst day to seal the floor first checking it for dampness using a Damp Meter. The flagstones were dry so I then proceeded to seal the floor using four coats of Tile Doctor Seal and Go which adds a nice subtle sheen to natural stone, it also a water based sealer so there’s no smell.
The look of the Yorkshire flagstones was restored and the owner of the house left the following comment on the Tile Doctor feedback system.
Very professional service. Very happy with the results, Ms. E. Parkin
Source: Residential and Commercial Tile and Stone Cleaning in Yorkshire