Cleaning the Flagstone Floor
To get over this problem it was necessary to remove the top surface of the flagstone using a milling pad together with a small amount of Tile Doctor Pro-Clean. The flagstones were then washed down with water which was then removed using a wet and dry vax machine. There was no damp proof course under the tiles so I left it to dry for a week before coming back to seal.Sealing and Restoration of Flagstone Floor
The milling process had opened up the pores in the sandstone flagstone floor tile so to seal it I used 1 coat of Tile Doctor Colour Grow in order to bring out the colour in the stone and then topped this off wth a further 3 coats of Tile Doctor Seal and Go.Source: Flagstone Floor Restoration in Lancaster