To prevent quality problems such as yellowing of white marble, the following points should be paid attention to during processing and installation, so that white marble can perfectly present the beauty of decoration.

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1. Yellowing caused by the internal composition of marble

structure occurs through external conditions. This external condition is water and oxygen in the air. Therefore, as long as water is effectively prevented from passing through the inside of the stone, the yellowing caused by the stone components and structure will be effectively suppressed.

2. An effective means to prevent water from passing through the inside of the stone is to waterproof the back of the board before installing the stone.

Early stone board back waterproofing treatment was applied with siloxane/silane penetrating waterproofing agent. Facts show that applying this waterproofing agent to the back of the board cannot effectively inhibit the occurrence of stone lesions including yellowing. Penetrating waterproofing agents have certain limits.

No matter how good the performance of the waterproofing agent is, its waterproofing performance will gradually decline due to environmental influences. This is why after the first application of the waterproofing agent, it should be reapplied at regular intervals to repair the decline in its waterproofing performance. For this reason, penetrating waterproofing agents are only suitable for panels that can be repainted at any time, such as the front of the floor or the wall facing outward.

When penetrating waterproofing agents are used on the bottom of the board, the waterproofing function of the waterproofing agent cannot be monitored. Even if there are signs that the function of the waterproofing agent has declined, we cannot repaint and repair it, and can only let it deteriorate and finally lose its waterproofing function completely. This is why many projects still cannot avoid the main cause of stone disease using this floor installation process.

A stone waterproof adhesive with cement as the base material and high molecular polymer emulsion came into being. This type of waterproof adhesive is called a two-component waterproof adhesive.

One component is based on cement, with other inorganic fillers and a small amount of polymer additives, and the other component is an organic polymer emulsion. This two-component waterproof adhesive must be mixed on site. Workers who lack professional knowledge often do not realize the importance of the ratio of the two components and do not mix them strictly according to the specified ratio. Therefore, the quality cannot be fully guaranteed.

In addition, there are many brands of this type of waterproof adhesive, and the quality varies. If the polymer type in the emulsion is not properly selected or the solid content is too low, it is likely that it will not play a waterproof role. This two-component waterproof adhesive is not suitable for white marble with a high iron content or marble with many dark cracks, because when applying this waterproof adhesive, the strongly alkaline cement water will immediately enter the cracks or pores of the stone and seep out from the board surface, and the board surface may turn yellow soon.

3. For white marble yellowing caused by external reasons, it can be prevented through reasonable use and maintenance,

For example, placing a fiber carpet at the entrance to remove sand or other hard particles on the soles before entering the marble paving area, reducing the wear of foreign hard particles on the stone board surface.

The mop used to clean the floor must be kept clean, and the water used for mopping the floor must be clean. After mopping the floor, wipe the water on the ground clean, and use dry mopping as much as possible and less wet mopping. If conditions permit, it is best to use marble cleaning fluid for maintenance. Floor waxing has been proven to be a marble board maintenance method that does more harm than good.

First of all, the gloss of the floor polished with wax does not last long. On the other hand, most waxes have a blocking effect on the ventilation pores of the stone, which blocks the normal gas passage of the marble that adjusts with the climate.

Finally, when the accumulated wax layer turns yellow due to aging and needs to be removed, a wax remover must be used. The use of a wax remover will seriously affect the indoor air quality. Crystal surface treatment is a common polishing treatment for marble floors. Choosing the right crystal surface agent can make the surface of the treated stone obtain a dense, but not breathable, bright film.

However, when performing crystal surface treatment, such as polishing with steel wool, the scattered steel wool powder must be cleaned up with a vacuum cleaner. Any steel wool powder remaining on the ground may become a source of pollution for the yellowing of the board surface.

4. Practitioners of stone installation must have a certain professional foundation

Understand the reasons for the yellowing of stone, have the necessary skills for installing stone, keep the construction environment clean and tidy, and avoid yellowing of stone caused by installation.

Scientifically care for stone to avoid the introduction of iron that will make the stone yellow from the cleaning water or floor polishing process. Use high-quality penetrating waterproofing agents to regularly protect the floor and reduce the time and opportunity for water to contact the stone.

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Therefore, effective prevention of yellowing of white marble should be a comprehensive measure. In the case of no effective waterproofing of the cement floor or wall, the treatment of the back of the stone slab is particularly important. Choosing a waterproof adhesive with guaranteed quality to waterproof the back of the slab is the most important step among all measures.