How to remove cement stains from marble?

1. The permeability of stone

When discussing how to remove the cement spot of stone, we must first popularize an important characteristic of stone, namely permeability. This characteristic of stone is completely different from the characteristics of zero water permeability of ceramics and glass. If a colored liquid is used to treat cement spots, special care must be taken to see if it will penetrate in and cause color difference. Some cleaners penetrate the marble, leaving irreversible stain residues. Especially light-colored jazz white, Guangxi white and other products.

2. Cement cleaning agent

Marble contaminates cement, and it is recommended to use a cleaning agent that does not react with the calcium carbonate component of marble: biological cement cleaning agent. The use of biological cement cleaning agent is as follows: 1. For general cement ash, use a rag to wipe the marble directly with the biological cement cleaning agent, and then wet the rag to wipe off the cleaning agent adhering to the marble surface. 2. For the thicker cement layer on the marble surface, it can be directly sprayed with biological cement cleaning agent, wait for a certain period of time, and after the cement on the marble surface is softened, then rinse with water or wipe it off with a cloth. Wipe with a clean damp cloth.

3. Scraper method

Against the marble surface, insert a spatula to remove the cement.

4. Special cleaning agent for stone

Such products can decompose organic pollution on the stone surface and remove surface protective agents. If necessary, the cleaning agent can be mixed with the stain remover powder to prolong the reaction time of the compound and absorb the stain into the paste.

Before applying the compound, test small inconspicuous areas such as wall corners and ensure that the stone surface is not covered with dark flower marks. It is relatively easy to remove minor scratches, and there are many polishing powders on the market. However, when using polishing powder, most of them need to use a polishing machine or a single-wiping machine.

5. Polishing method

The process of this method may be complicated, so it is recommended that it be handled by professionals.