I ve tried a multitude of products to clean it off but nothing works.
White residue on slate tiles.
If the substance can be scraped into shavings it may be an accumulation of cosmetics soaps cleaning products or hard water build up.
These stains usually white but sometimes brown or black can be removed without too much time or trouble.
Even spilled paint and other residues can be removed using a natural process.
When done correctly removing scale from the often.
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.
You can t see this when the tile is wet but.
With the exception of where we mostly stand under the shower head the tiles all have a white chalky coating on them.
There is also a white discoloration in the grout.
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 the tile is wet it looks fine.
We have small 1 tiles on our shower floor that is about 3 years old.
The minerals in the water crystalise which results in white residue appearing on the surface of tiles.
This section is also weaker and is beginning to crumble.
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.
First take a close look.
Your suggestions are deeply appreciated.
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.
I have a slate tile patio on the back of my house.
White residue on the stone ruins its appearance.
When you wipe the tile to remove the leftover grout you must rinse your sponge often.
Within two day we noticed white picture framing and white discoloration on many tiles.
But after it dries the white is back.
The culprit is lime scale a chalky mineral left behind when the tiles are exposed to hard water.