I ve tried a multitude of products to clean it off but nothing works.
White residue on slate tiles.
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.
The minerals in the water crystalise which results in white residue appearing on the surface of tiles.
We have small 1 tiles on our shower floor that is about 3 years old.
It has been about a week and the white areas are continuing to grow as does the number of tiles affected.
When the tile is wet it looks fine.
When done correctly removing scale from the often.
Your suggestions are deeply appreciated.
You can t see this when the tile is wet but.
There is also a white discoloration in the grout.
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.
But after it dries the white is back.
If the substance can be scraped into shavings it may be an accumulation of cosmetics soaps cleaning products or hard water build up.
Even spilled paint and other residues can be removed using a natural process.
If it is powdery then it is likely efflorescence.
If you have white residue on your stone here are a few tips and tricks for identifying the cause and possibly removing it.
These stains usually white but sometimes brown or black can be removed without too much time or trouble.
First take a close look.
When you wipe the tile to remove the leftover grout you must rinse your sponge often.
If your slate is looking a little worse for wear do not be alarmed.
This section is also weaker and is beginning to crumble.
If not you re just spreading the grout residue onto new tiles.
The culprit is lime scale a chalky mineral left behind when the tiles are exposed to hard water.
With the exception of where we mostly stand under the shower head the tiles all have a white chalky coating on them.
Within two day we noticed white picture framing and white discoloration on many tiles.