A homeowner from Dalston near Carlisle got in touch earlier this year for help with a Chinese Multi-Coloured Slate tiled floor in their kitchen/diner. The sealer had long since worn down and now dirt was getting into the pores of the stone leaving it dull and difficult to clean.
Slate is naturally porous and uneven due to its riven surface leaving it vulnerable when unsealed. Additionally, sealers wear down on the busiest parts of the floor first resulting in an uneven and unattractive appearance over time.
I conducted an initial inspection to survey the floor, discuss its renovation and work out an outline plan for its renovation. Basically, the floor needed a deep clean to strip off what remained of the old sealer, flush out the ingrained dirt from the tile and grout and then apply a fresh sealer to protect it going forward.
Later that day I emailed over a detailed quote that included all the products needed to do the work. This was accepted and a date agreed for the work to start which would take two days.
Deep Cleaning a Multi-Coloured Slate Tiled Kitchen Floor
To get the floor clean and free of any remaining sealer a strong dilution of Tile Doctor Remove and Go was spread onto the floor and left to soak in for ten minutes. This gives the product time to work its way into the pores of the stone to digest the soiling and breakdown old sealers. The floor was then scrubbed using a rotary machine fitted with a coarse 200-grit pad that opens the pores in the stone allowing for dirt and embedded grime to be flushed out.
The soiling was rinsed away and extracted with a wet vacuum before moving on to the next step which was to scrub the grout using a dilution of Tile Doctor Pro-Clean. As before this was left to soak in first before being scrubbed in with a stiff brush.
Before finishing for day one the floor was then given an acid rinse using Tile Doctor Acid Gel which further cleans the stone and neutralises the ph level of the floor after the use of the other products where are alkaline. Being acidic this product will also remove any old grout smears and other mineral deposits such as salts leaving the slate in a completely uncontaminated state. Once done the floor was given a thorough rinse and wet extraction to remove all cleaning residues.
Sealing a Multi-Coloured Slate Tiled Kitchen Floor
After leaving the floors to dry out fully overnight I returned the next day to apply a sealer which would add colour and an appealing finish to the slate. We had discussed the desired finish when I popped over to survey the floor and from this, I recommend using Tile Doctor X-Tra Seal which is a hard-wearing impregnating sealer that is rated for external use so ideal for kitchen floors. Being oil based it’s quite thick so to make it more workable and to enhance the colours further I mix it 50:50 with Colour Grow which is another impregnating sealer in the Tile Doctor range.
The first coat was worked into the Slate to enhance the natural tones and then additional coats were applied as required for full coverage. The excess sealer was then buffed off with a white pad to avoid surface residue.
Once done the colours in the stone really popped making the floor came alive again and the customer very happy. The new sealer will keep dirt on the surface where it can be easily cleaned away for which I recommended using a sealer safe cleaning product such as Tile Doctor Neutral Tile Cleaner applied with a two-chamber mop.
Source: Multi-Coloured Slate Floor Cleaning and Sealing in Dalston Cumbria