How Do I Remove The Hazy Coating From My Porcelain Tiles?
By Ian Taylor on Jun 26, 2008 in Cleaning, Porcelain, Problem Solving, Visitor's Questions
In my last article I mentioned the coatings that certain factories are applying to their porcelain tiles. In truth there are lots of different types of coating being used. Their purpose is to afford some protection to the tiles during transport, handling and of course, installation. Why are they doing this? Well, many newer porcelain tiles are not being manufactured to quite the same exacting standards that they once were, particularly, those emanating from the Far East.
They are intended to be removed before, during or after grouting. Many of them use standard, paraffin-type waxes which are relatively easy to remove but others however use more modern, polymers that can be much harder to remove and each can require a different chemical.
For standard waxes, the easiest and safest way to remove them would be to use a product designed specifically for this job, such as Nanoscrub by Aqua Mix. We have talked about this product (and its many other uses) before, but this is the task it was actually designed for. The process is simple; just pour some Nanoscrub onto the tiles, add a little water and scrub with a white nylon emulsifying pad, rinse and you’re done.
For the more difficult types, it could involve a bit of trial an error I am afraid. Some respond well to strong alkaline cleaners such as Heavy Duty Tile and Grout Cleaner, while others really require a solvent-type product. You have to be careful with solvents- not just for the obvious reasons but also, because some of them can darken the tiles or leave behind an oily residue themselves. We would try Sealer & Coating Remover – it is a far safer and much more user-friendly solvent cleaner. You may be forgiven for thinking, “well I will go straight to the solvent, just in case the alkaline does not work” but it does not always work like that; coatings that respond to alkaline cleaners do not always necessarily respond to solvents, and visa-versa. A useful tip is that Nanoscrub can be added to either to boost its performance.
The last type of coating issue I am going to discuss is the new wave of so-called nano-sealers that are also factory applied. The word nano is being used a lot these days; in the case of both the Nanoscrub that we mention and these nano-sealers – all that the ‘nano’ technology is doing is reducing surface-tension, this allows for a greater and easier penetration of both the cleaner and in this case sealers, into the small (but very problematical) pores of many polished Porcelain tiles. It does not indicate if the sealer is good, poor or mediocre. The problem we have seen is that the factories, due to the speed of production and less than scrupulous quality control, do not always remove the sealer residue, this then dries to form a haze. Some of these sealer residues can be removed with one or a combination of the types of product we have talked about, but for some, unfortunately, at this point there would appear to be no effective solution – it is still a work in progress!
hronagh | Aug 12, 2008 | Reply
I have recently placed some glossy porcelain tiles in my living area. They are 600 by 600 light beige pre-selaed ones. I have problems having then cleaned. Have tried floor cleaners, steam mopping, normal mopping and Methalyated Spirit. With the exception of Methalyted Spirit, the other methods leave the tiles dry with watermarks. With the Metho, howver, the tiles dry clean but as soon as I walk on them, there are footprints everywhere. Do I stand a chance having them cleaned at all? Is there a better way of cleaning? Are there any chemicals that can be used so that they dry clean? A friend suggested white vinegar, would that help?
Thanks heaps,
karen | Jul 28, 2010 | Reply
I have recently laid polished porcelain tiles, they had wax on them so i cleaned with nanoscrub and tile scourer. Now i have scuffed looking tiles. Have i damaged to glaze on the tiles? No one can seem to give me any answers in what to do next. Will sealing them take the scuffed look away and do you have to sealed polished porcelain tiles? Please advise.
Ian Taylor | Jul 28, 2010 | Reply
Hi Karen,
OK, three questions in there. First of all, the abrasive component in Nanoscrub is derived from calcite, it won’t even scratch marble or limestone, I cannot imagine for a moment it has done a thing to the surface of the porcelain. I don’t think a tile scourer will scratch them either, even if it was the black/coarse one – whatever else porcelain tiles are, they are incredibly hard. If you used some thing much harder then maybe.
Will sealing remove the scratches? – No, we are talking about impregnating sealers, which your porcelain may or may not need, depending on whether the particular porcelain has micro pores that could be problematical. I think there are two possibilities for the marks; either 1) the wax is a very hard type, or some other type of coating which you have only partially removed, or 2) in removing the wax, you have revealed the true surface of the tile, one that was not properly finished at the factory. If it is#1 – (and let’s hope it is) you can try repeating the cleaning. If #2 – then the tiles are faulty, period.
Do they have to be sealed? – again, it depends on the porcelain, I have covered this issue in detail in another post – look under the porcelain category. But in short, not all porcelain tiles need sealing, do a quick test with a marker pen – if it leaves a mark that you cannot get out, then sealing with an appropriate sealer will definitely be of benefit.
Hope this helps
Ian
karen | Jul 29, 2010 | Reply
I am unsure whether the marks are from left over wax or the cleaning product (creme cleanser) that we used to remove the wax and grout that stained the tiles. How do you know when the wax is cleaned off? Or is is creme cleanser/grout still in the tile? Have only laid half of the tiles at present. We don’t want to go any further until we find out what we have done wrong. Please advise. Karen
Ian Taylor | Jul 29, 2010 | Reply
Hi Karen,
It could be your cream cleanser residue, you mentioned Nanoscrub in your earlier post, now you are being less specific, if it was nanoscrub then the marks won’t be scratches from that, but any cream type cleaner could leave residue (just re-wet and use more of the same cleaner to remove, then rinse really well). It could also be wax residue, have you tried a high alkline cleaner, like Heavy Duty Tile & Grout Cleaner for example?
Can you post a picture, or send one to me via the contacts page?
Ian
Ian Taylor | Jul 29, 2010 | Reply
It could also be grout staining of course, a picture would really help, send me a message from the contacts page and I will email you back so you can email me the picture