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Anonymous users2024-01-24If it is a black grout, it is difficult to wipe it clean, and my balcony tiles have encountered this problem. The workers took a lot of effort, first wiped with steel wool balls, and then scrubbed with dilute hydrochloric acid, but it was still impossible to wipe very clean, and the color of the crevices rubbed by dilute hydrochloric acid was gray.
You can try to apply toilet cleaner on it and wipe it after 5 minutes Or method: glacial acetic acid (purity wipe with a wet rag can be extended: it may be effective to wipe it several times with household white vinegar.
Warning: Do not use oxalic acid because it is harmful Do not need to buy tile cleaners because they are expensive, and some may also have an impact on tiles.
Hehe, I hope it helps.
The quality of the finished grout is defective, or substandard pigments are added, or ink is added.
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It is advisable to consider the issue of closure first.
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Why is it not the worker who lays the brick to remove, the price of this tiling includes cleaning, and the grout is very good to clean after hooking, if it is not cleaned, it can only be cleaned with a small shovel.