Flagstones are a durable Sandstone based material that give a solid feel to any floor, however while large and impressive to look at they can be very rough and un-even. This isn’t so much of a problem when Flagstones are used externally for patios and pathways, but rough surfaces trap dirt and when these tiles are used internally, they are much easier to maintain if the stone is smooth and sealed.

This customer, who lives in the Lancashire town of Haslingden, had this problem with their Flagstone tiled floor and like most things related to tile, stone and grout we have a solution in the form of a process known as milling. This basically involves grinding down the surface of the tile using coarse diamond encrusted pads to make it smooth.

The customer booked me in to get the job done, having seen some previous milling work of ours on our website and liking what we had achieved for other people with similar floors.

Milling an Uneven Flagstone Tiled Floor

Milling the stone involves the use of a set of thee millings pads of different grades (50, 100 and 200 grit) which are applied in sequence. You start with the coarse and abrasive 50 grit milling pad and follow this by smoothing this surface with the finer 100 and 200 diamond grit milling pads. Water is used to lubricate and capture the dust which is created during the process resulting in a slurry which needs to be rinsed away and extracted between each pad. The process requires the use of a solid weighted rotary machine and a fair bit of muscle power to guide it.

We successfully managed to mill the Flagstone tiles virtually flat in places and the process removed the unappealing stained and dirty layer of stone that was ruining the appearance of the floor. Interestingly we usually find that by grinding away the old and dirty layer of stone the true colour of the tiles that had been hidden under many years’ worth of muck is revealed. Unfortunately, in this case, due to the darkness of this stone it was difficult to see a great deal of colour change.

Sealing Flagstone Floor Tiles

Finally, the floor needed to be sealed to protect against future instances of staining and ingrained dirt. To do this I sealed the tiles using several coats of Tile Doctor Colour Grow, which is an impregnating, colour enhancing sealer that soaks into the pores of the stone and occupies that space preventing dirt from become ingrained. The sealer also leaves a matte, natural looking finish, which is a perfect match for the rustic character of the Flagstone tiles.

Now that the floor has been levelled and sealed, the surface is smooth and protected. This means the customer will not be ruining any more mops when the cleaning bucket comes out!