Tile joints are darker in some places than others. Where does the problem come from ?

Tile joints are darker in some places than others. Where does the problem come from ?



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Question:

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Answer: an irregular dosage of the grouting mortar.

When laying tiles in a room, sometimes the joints take on slightly different shades, lighter or darker. The cause comes from an irregular dosage of the jointing mortar. You've probably had to prepare mortar for the joints several times, and you haven't done the same dosage every time. That is why it would have been better to make the joints at once. To correct this problem, several possibilities: you can paint the joints of the tiling (so their color will be uniform), you can try to whiten the darkest joints with hydrochloric acid (very diluted in water), or extreme solution you redo the joints. But be aware that the difference in color fades over time. You too, send us your brico question