Chinese Slate | Stone Cleaning and Polishing tips for Slate floors

I recently visited a customer living in the village of Ravensthorpe, just outside Northampton to rejuvenate a 15-year-old multi coloured Chinese riven slate floor that needed a deep professional clean. Slate is a hard-wearing tile used for flooring high traffic areas but does need sealing to bring out its best features. In this case the sealer had long since worn off and dirt had become ingrained in the stone making it difficult to clean effectively.

Chinese Riven Slate Kitchen Floor Before Cleaning Ravensthorpe

We discussed the client’s requirements and the cleaning process I planned to follow to rejuvenate the floor. I had to check on availability, so I e-mailed over a quote and some dates later that day. They were happy with my proposal and agreed for the work to be done whilst the customers were on holiday.

Cleaning Riven Multi Coloured Slate Tiles

My first task was to test a small area to determine which products would give the best results. In this case, I decided to start with a strong dilution of Tile Doctor Remove and Go which is a strong alkaline cleaner/coatings remover that’s safe to use on Tile and Stone. I spread this solution across a section of the floor and left it to seep into the pores of the stone and lift out the ingrained dirt.

Chinese Riven Slate Kitchen Floor During Cleaning Ravensthorpe

After allowing the solution adequate time to dwell, I scrubbed the slate with a carbon brush fitted to a rotary machine to gradually reveal the fantastic natural colours of the Slate hidden beneath the dirt. Happy with my choice of cleaning product I repeated this process in sections until it had been carried out throughout the entire area. Following this, I rinsed the entire floor several times with clean water, before soaking up the resulting soiled residue with a wet vacuum.

The next part of the cleaning process entailed paying attention to the grout lines which were scrubbed using Tile Doctor Grout Clean-Up. The resulting residue was promptly extracted with the wet vacuum and I finished by giving the whole floor a rinse with Tile Doctor pH Neutral Tile Cleaner. This is a day to day tile cleaning product which is recommended for stone floors, many supermarket tile cleaning products are only suitable for ceramic tiles due to their acidic formula and can damage a floor over years of use so you should always read the label. However, I always leave my clients with a complimentary bottle of a suitable Tile Doctor product to maintain their floors.

Sealing Riven Multi Coloured Slate Tiles

The floor was left to dry off overnight and I returned on the second day to seal the floor. Before starting I checked the floor was dry using a damp meter which confirmed the Slate was dry and ready to seal. The floor must be completely dry before sealing as any excess moisture has the potential to the damage the performance of the sealer. Since my client had specifically requested a silk finish, I opted to use Tile Doctor Seal and Go which dries to leave a lovely subtle sheen that really enhances the look of the stone. Five coats were applied to ensure a good hard-wearing protection.

Chinese Riven Slate Kitchen Floor After Sealing Ravensthorpe

My client was very pleased with the results, particularly as they hadn’t realised how much colour it had lost over the years and left the following feedback on our website.

”I despaired of having a clean-looking floor again. Phil Vissian assured me that intensive deep cleaning and resealing could restore our fifteen year old, subtly coloured, Chinese riven slate kitchen floor. He has done a fantastic job. Looks like new, and I shall book Phil for an annual professional clean, so that it never gets as bad again.” Sally M, Northampton

Source: Slate Tile Cleaning and Renovation Service in Northamptonshire

Cleaning a Chinese Slate Tiled Hallway Floor

As the floor was in the hallway, we needed to protect the stairs and skirting with plastic sheeting before we started. I then started cleaning the tiles with a strong concentration of Tile Doctor Remove and Go, this is a multi-purpose stripper which can remove most coatings and sealers and works best it left to dwell and soak into the stone for a long time before scrubbing it in. This also helps it work on ingrained stains and remove heavy grease build-up. My primary reason for choosing Remove and Go was to remove what was left of the sealer so after applying it to the floor I left it to soak in for ten minutes before being scrubbed it into the tiles with a black pad scrubbing pad fitted to a rotary floor buffer. The dirt soon turned the cleaning solution black and the slurry was extracted using a wet vacuum.

Next, I worked on cleaning up the grout using Tile Doctor Pro-Clean, this is good for neglected and heavily soiled areas and it makes short work of cleaning dirty grout. I had to scrub the grout by hand and once I was happy that the slate and grout was as clean as it could be the floor was given several rinses with water to remove the remaining dirt and remove any traces of cleaning products. Once this was done this completed the cleaning process, I was satisfied with our efforts and the floor was left to dry off overnight.

Sealing a Chinese Slate Tiled Hallway Floor

The next day I checked the moisture level of the stone in several areas with a damp meter to check that the floor was dry. The sealer will not cure if the floor is not properly dried out. I chose a combination of sealers to achieve the look we were after. First, I sealed with one coat of Tile Doctor Colour Grow this is an impregnating sealer that occupies the pores in the stone thereby preventing dirt from becoming ingrained there. It’s also a colour enhancing sealer that works really well on Chinese slate to highlight all the colours. Once this was dry I followed with three coats of Tile Doctor Seal and Go which is water-based blend of acrylic polymers that provides both a stain resistant surface seal and a durable low-sheen finish, which was perfect for finishing this floor.

Chinese Slate Floor Cirencester After Cleaning

The customers response was ‘It never looked as good as that’, and he now realised the importance of sealing the floor correctly! I love the natural patterns in this type of floor, it is one of my favourites.