How to Remove Staining and Renovate Black Slate Flooring

We received an enquiry from a property developer who had been renovating a property in Acton and needed our help to renovate the Black Slate tiles that had been installed throughout the ground floor. The slate floor had been down over 20 years and ran throughout the downstairs living space. Due to all the work being carried out the black slate had become very dirty with building material and had turned white with staining in many areas. They were uncertain if the floor could be restored but were reluctant to consider relaying it due to the expense.

As usual I went over to the property to understand the nature of the staining and work out the best products and processes for the renovation. There were multiple floors that needed attention so I measured up and worked out a detailed quote that included all the materials that would be needed. After reviewing the quote, I was given the go ahead and a date agreed for the work to start.

Cleaning a Slate Tiled Kitchen

To clean the floor, a strong solution of Tile Doctor Pro-Clean was applied to the floor and then scrubbed in with a black buffing pad fitted to a rotary machine. These pads can struggle to reach into the grout lines so they were given an extra clean using handheld scrubbing brushes. This combination brought the dirt out of the floor to the surface where it could be extracted with a wet vacuum.

Tougher stains on the tiles were spot treated using more Pro-Clean and some of the grouting had to be scrubbed harder with wire brushes until the whole floor was consistently clean throughout.

Once done the floor was rinsed with a very weak dilution of Tile Doctor Grout Clean-Up to further clean the floor and neutralise it following the use of Pro-Clean which is a strong alkaline. The solution was then extracted with a wet vacuum and floor left to dry.

Sealing a Slate Tiled Kitchen

Once dry it was time to seal the floor which will protect it from ingrained dirt and enhance the finish. For this Tile Doctor Stone Oil was applied which being oil-based really improves the texture and dark colour of the stone.

The sealer is applied using a microfibre cloth and any excess product is wiped off before buffing with a white buffing pad on the rotary machine. This left a nice sheen to the tile and a consistent look throughout.

Our client was very happy with the finish, the Slate and Grout had been transformed and the sealer had really enhanced the look of the slate. For aftercare we recommended using Tile Doctor Neutral Cleaner which will provide effective cleaning whilst not impacting the seal.

Source: Black Slate Floor Cleaning and Sealing Service near Acton London

How to Deep Clean Slate Tile and Grout by Berkshire Stone Expert

This customer in Thatcham, near Newbury in Berkshire had inherited a rare semi-riven Slate floor with their kitchen. However, years of dirt and contaminations had built up and left the Slate looking dull and the grout discoloured.

 

Slate is a very popular floor and wall tile due to its low porosity; there are many varieties and textures of slate available, it does need to be sealed though to keep the dirt from becoming ingrained in the stone. Unfortunately, the previous owners had not maintained the sealer and owning four dogs had probably used a strong acid cleaner on the floor which will have shortened its life. Inevitably time took its toll on the tiles and it was now overdue a deep clean and new sealer.

 

Cleaning a Semi-Riven Brazilian Slate Tiled Kitchen Floor

The first job was to apply a strong dilution of an alkaline detergent called Tile Doctor Pro-Clean which was applied and left to dwell for several minutes before agitating with a rotary floor buffer fitted with a scrubbing pad. A stiff brush was also run over the grout lines to get them clean.

I worked in sections and then used a hot water encapsulation system that is used a lot by carpet cleaners to remove the slurry and get the floor as clean as possible. After inspecting the floor, I could see a few stubborn areas than needed more work, so the process was repeated until I was satisfied the Slate tile and grout was as clean as it could be. The floor was then left to dry overnight

Sealing a Semi-Riven Brazilian Slate Tiled Kitchen Floor

The following morning, we returned, the floor looked nice and dry but I took several moisture readings with a damp meter just to be sure. All was in order, and I was able to progress onto the next step of applying a fresh sealer to the floor.

For this type of tile and conditions I chose to apply Tile Doctor Seal and Go which is a water-based sealer (no smell as it dries) that works really well on Slate. Multiple coats were required and each coat is left to dry before applying the next. The seal is very hard wearing, perfect for high traffic areas such as the kitchen and it leaves a lovely sheen without making the floor appear too shiny.

 

The customer was very happy with the outcome and left the following feedback on our website:

  “Extremely professional from point of contact till completion of the job, Dennis has done a magnificent job of my tiles. And I would highly recommend his services”
Before leaving made sure to leave a complimentary bottle of Tile Doctor Neutral Floor Cleaner to help maintain the floor going forward. This is a pH neutral product which makes maintenance of the floor easy and ensures that the newly applied sealant will stay in place and not be compromised. As mentioned before most people, including I suspect the previous owner, tend to use supermarket products which are far too harsh and break down the sealer taking them back to square one.

 

Source: Slate Tile and Grout Renovation in Berkshire