Sandstone Tile Cleaning

Welcome to my Work History archive where you will find detailed examples of the cleaning and renovation of Sandstone flooring carried out in South East Wales

Cleaning and Renovating Sandstone Floors

Sandstone is often used for Kitchen and Hallway flooring, however as with any natural stone it needs to be sealed to protect it and bring out its beauty and colouring. One of the biggest problems we find with stone flooring is with the sealer becoming stripped away prematurely by the continuous use of cleaning agents not designed for this type of surface. Without its protective sealer porous stone quickly becomes ingrained with dirt making it increasingly difficult to clean effectively.

Our method for renovating Sandstone typically involves stripping the floor of any existing sealer/coatings, deep cleaning to extract the dirt and then applying a fresh sealer for which I recommend Tile Doctor Colour Grow as it enhances the natural colours in the stone. If the floor is particularly bad, it’s best to resurface it with coarse milling pads which can remove a thin layer from the surface of the stone.

Below you will find detailed examples of work we have carried out in the past, it should give you some idea of what’s involved and what can be achieved with the right techniques and products.

Fossil Sandstone Floor Clean Seal Newport

Deep Cleaning a Fossil Sandstone Tile Kitchen Floor in Newport

The Fossil Sandstone floor pictured was installed in the kitchen of a property in Newport South Wales. The grout was originally a matching Sandstone colour, but it had been some time since the installation and now the stone and the grout had darkened with wear and ingrained dirt. The Sandstone itself was really grubby and the unique and beautiful fossils imprinted in the stone were barely recognisable.

Fossil Sandstone Kitchen Floor Tiles Before Renovation

Unhappy with the appearance of their stone floor and aware of our reputation from a friend, the owner got in touch to see what could be done and to get a quote for renovating the floor. I arranged to visit and conduct a survey and could immediately see that the protective sealer had long since worn off and not the stone was very dirty with ingrained dirt ruining its appearance.

Before creating a quote, I conducted a couple of cleaning tests on a small inconspicuous section of stone and grout to work out the best method and products to restore its appearance. Once I had worked out the best approach, I provided a quote for the renovation, and they agreed to go ahead.

Cleaning a Fossil Sandstone Tiled Kitchen Floor

I had found the most effective method for cleaning this floor was to start by applying a combination of Tile Doctor Nanotech HBU Cleaner with the same amount of Tile Doctor Pro-Clean. HBU stands for Heavy Build-Up which pretty much described the problem I was facing here however both products and versatile stone and grout cleaning products. The solution was applied to 2 square meters of floor at a time and given a light scrub with a handheld scrubbing brush paying specific attention to the grout.

Fossil Sandstone Kitchen Floor Tiles During Cleaning

The solution was left to soak into the floor for about five minutes and then with clean warm water added to the surface by a sponge from a bucket and then agitated with the scrubbing brush. It took quite a while as we were working on a small area at a time. But by working methodically it wasn’t long before it was completed.

Fossil Sandstone Kitchen Floor Tiles During Renovation

The grout joints were also scrubbed in the same way as the stone. As we cleaned the controlled areas the waste dirt was then vacuumed up. We then rinsed twice with fresh clean water, vacuuming the liquid waste away so as not to let the dirty water soak back into the tile. Afterwards the floor was inspected, and the process repeated until I was satisfied it was as clean as possible. The floor was then left to dry overnight.

Fossil Sandstone Kitchen Floor Tiles During Cleaning

Sealing a Fossil Sandstone Tiled Kitchen Floor

On my return the sandstone tiles were tested for moisture using a damp meter. I wanted to ensure that it was dry enough to apply a sealer and I don’t recommend applying a sealer to a damp floor as the new seal won’t cure and I’d probably get a call back.

The preferred sealer was Tile Doctor Colour Grow which is a colour enhancing impregnator that soaks into the pores of the stone to create a durable barrier that will prevent future staining and to make maintenance easier. Several coats were applied, allowing each one to dry before applying the next.

The clients were not home during the work being carried out as they went on a short break.
On their return they had a lovely surprise to see their floor looking in tip top condition.
They left a glowing feedback report to Tile Doctor stating their delight with the result. Another happy client!

Sandstone Floor Renovation Feedback Newport

Unfortunately, I forgot to get a final picture of the finished floor for this post however I did leave them a bottle of Tile Doctor Neutral Cleaner for aftercare cleaning.


Professional Cleaning of a Fossil Sandstone Tiled Kitchen Floor in South Wales

Sandstone Floor Cardiff After Cleaning and Sealing

Sandstone Tiled Floor Deep Cleaned in Cardiff

This Sandstone tiled floor with Limestone coloured grout in Cardiff was laid in 2006 and had now discoloured with wear and tear and had almost turned black in places which I suspect was due to no sealer being applied after installation.

I carried out a cleaning sample using Tile Doctor HBU Remover, which is a strong cleaning solution, applied it to one tile in the utility room and the dirt lifted off with remarkable results; I then dried the tile with a heat gun to show the customer the results which she was happy with.

Sandstone Floor Cardiff Before Cleaning Sandstone Floor Cardiff Before Cleaning

Cleaning a Sandstone Tiled Floor

For the rest of the floor I started by wetting the surface and carried on treating it with more HBU remover diluted 50% with Tile Doctor Pro-Clean which made it thinner and more effective for deep cleaning. Using a stiff sweeping brush with bristles about half inch long (well broken in for this type of job) I then scrubbed away at the tiles and then the grout joints using a small hand held scrubbing brush which I always find is more effective than a machine which can make a lot of mess and can be overly aggressive. I cleaned the tiles in 5m2 sections rinsing each section four times to ensure there were no trace of cleaning solutions left behind. When finished the floor was left to dry for two to four hours and I tested for moisture knowing it would be ok but always worth checking.

Sealing a Sandstone Floor Sealing

I sealed the Sandstone with four coats of Tile Doctor Colour Grow which is an impregnating and colour enhancing product which will protect the floor for many years to come.

Sandstone Floor Cardiff After Cleaning and Sealing
I tested the floor with a water test to ensure it was fully sealed, this is a simple test whereby you check to see if drops of water applied to the surface form beads on the tile. The end result was incredible as you can see the tiles looked as good if not better than the day they were cut from the quarry, and the Colour Grow certainly enhanced the true colours in the stone.

Sandstone Floor Cardiff After Cleaning and Sealing Sandstone Floor Cardiff After Cleaning and Sealing


Sandstone Tiled floor cleaned and Sealed in South Wales


South East Wales Tile Doctor

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