How to get rid of welding and grinding on tiles?
You will unfortunately not be able to get rid of such traces that affect the tiles in its mass. The only solution is to change the damaged tiles if of course they are not too numerous. A sheet REPLACING A TILE OF TILE on the site tells you the procedure to perform the best this operation. If a large tiling area is damaged, all you have to do is remove it to install a new one.
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