Here’s a scenario: ten years ago, you renovated your bathroom. As a shower, you chose a walk-in shower with a Belgian blue stone which is porous and is a limestone.
That’s why you have to be careful with products like Antikal. Because they will react with the lime in your limestone. In other words, you have to rinse away the excess Antikal quickly.
But you’re a computer geek and because you have a piece of software that you programmed and are already thinking about, you sometimes forget this.
Thus, a drop of Antikal remains on your blue stone.
A few hours later, that drop became a white stain. Which now really seems to be inside your stone.
Unfortunately, it really is. No matter what you try, it cannot be scrubbed off. Unless you let a professional come and polish a layer off of your stone (which costs about 800 euros, by the way).
Unfortunately, not much later the stains come back. Because the stains are deep in your stone and the reaction ‘continues’. That was 800 euros for a few weeks’ peace of mind.
Of course you buy a whole gang of HG products such as HG blauwesteen reiniger, HG grafsteenreiniger and HG natuursteen kleurvlekkenverwijderaar.
You spray it on, let it soak in for half an hour; a little of the stains are now indeed better. But not really.
What actually worked better was the Mr. Proper Magic sponge. That sanded the top layer of that white stain away a bit.
But what worked best after that was a coat of Moeller Stone Care HMK P333 Hardsteenolie.
Your Belgian Blue stone will become a Belgian dark blue stone. But the stains (which I had first rubbed out with the Mr. Proper Magic sponge) are less visible and seem to belong to the stone’s natural life.
Then, after two full days letting the stuff get impregnated, a sticky top layer appeared. I had probably used a little too much of that stuff.
But another heavy treatment with the whole gang of HG products, such as HG blauwesteen reiniger, HG grafsteenreiniger and HG natuursteen kleurvlekkenverwijderaar (all at the same time and soak for half an hour) followed by rubbing hard with an iron sponge, and the sticky top layer is gone.
The stone is actually quite beautiful now. Dark blue.