The pictures below are of Chinese Slate floor in the Kitchen of a property in the small village of Clifton just south of Penrith. We often get asked what the difference is between Rough and Semi Riven Slate, and this floor was a mixture of both. If you look closely at the pictures and check out the darker parts of the floor you will see these smoother Semi Riven Slate, whereas the light copper-coloured parts of the floor were of the rougher textured variety. It’s not that unusual for stone to be mixed in this fashion as it can be supplied from different quarries in order to achieve a particular look. The blend of different slates makes little difference when it comes to cleaning as the process is essentially the same. I would advise though if you intend to clean the floor using a mop then you should opt for Semi Riven Slate as Rough Slate can shred your mops and make it harder to maintain. We tend to use industrial floor buffing machines which work well on both surfaces so are less effected. There was a bit of wax on this floor so to remove this Tile Doctor Wax Away was applied. The product was left to stand for fifteen minutes before being scrubbed into the stone, rinsed and then the soil extracted with a wet vacuum. We then finished the cleaning with an Acid Rinse which involves scrubbing the Slate with Tile Doctor Grout Clean-up. This not only works well at cleaning up the stone and grout but also neutralises the alkaline pH left over from using Wax Away. I am very wary of the pH level of the floor as it could have an impact on the new sealer, giving the floor an acid rinse before sealing also ensures a better bond with the sealer. Naturally, you can’t leave a strong product like Grout Clean-up on the Stone for long as it could etch the surface so once done the floor was thoroughly rinsed with water and extracted again with a wet vacuum. A mop and bucket and lots of sponges won’t do the job on a large area like this. Once we finished the clean, we left it to dry off overnight and came back the next day to apply the sealer. We were originally going to apply a satin finish sealer, but the client had a big dog with sharp claws which could of scratched and marked the sealer so decided against it. I advised the client to use an Impregnating sealer called Tile Doctor Colour Grow, which lifts the natural colours in the stone, but is not a topical shiny sealer as the seal soaks into the Slate and leaves a a nice matt finish instead. Only two coats of sealer were needed, and the floor looked like new again. My client was very happy with the difference in the appearance of the stone and how much cleaner the grout was, so much so they the following feedback for us, which is always appreciated. “Totally impressed with the team they couldn’t have been more professional and even left me with some cleaner. My horrible 12 year old slate tiles look fabulous” As usual we left a free bottle of Tile Doctor Neutral Tile Cleaner for aftercare, it’s very important not to undo all that hard work by using a product which will damage the seal, using a pH neutral cleaner will keep the seal looking sharp and fresh for years to come. Heidi Taylor North Cumbria Tile Doctor