This section is also weaker and is beginning to crumble.
White residue on slate tiles.
These stains usually white but sometimes brown or black can be removed without too much time or trouble.
The minerals in the water crystalise which results in white residue appearing on the surface of tiles.
I ve tried a multitude of products to clean it off but nothing works.
If you have white residue on your stone here are a few tips and tricks for identifying the cause and possibly removing it.
White residue stains on tiles known as efflorescence white stains appearing on the surface of tiles is caused by water penetration underneath stone or tiles.
With the exception of where we mostly stand under the shower head the tiles all have a white chalky coating on them.
We have small 1 tiles on our shower floor that is about 3 years old.
I have a slate tile patio on the back of my house.
White residue on the stone ruins its appearance.
The culprit is lime scale a chalky mineral left behind when the tiles are exposed to hard water.
One of the tiles has formed a chalky white section.
If your slate is looking a little worse for wear do not be alarmed.
If not you re just spreading the grout residue onto new tiles.
When you wipe the tile to remove the leftover grout you must rinse your sponge often.
First take a close look.
If it is powdery then it is likely efflorescence.
When the tile is wet it looks fine.
You can t see this when the tile is wet but.
There is also a white discoloration in the grout.
But after it dries the white is back.
I ve tired washing the white substance off with water and while it looks like it washes off when the tile dries the white stuff is still there.
Within two day we noticed white picture framing and white discoloration on many tiles.
When done correctly removing scale from the often.
Your suggestions are deeply appreciated.
The answer you say you have not sealed the floor yet so by the sounds of it you could still be wiping off the cutting dust residue on the surface of the slate tiles.