Causes and solutions of blackening of outdoor slate carving wall

There are many reasons why the outdoor slate carved wall is black. Let's briefly summarize it.

Weather factor

The carved stone wall is eroded by wind, sun and rain, especially in humid environment, the growth of bacteria and algae will promote the corrosion of the stone surface, and over time, the stone wall will become black.

air pollution

The erosion of pollutants in the air on the surface of stone walls should not be underestimated. For example, acid gases such as sulfur dioxide and nitrogen oxides are easy to cause corrosion and discoloration of stone surface.

plant growing

All kinds of tiny plants often grow on the surface of stone walls, which will hinder the breathing and drainage of the wall in the long-term growth, leading to the pollution and discoloration of the stone surface.

texture of wood

Some inferior stone materials or improper wall protection can easily make the surface of the stone wall show various abnormal colors, such as black, white and mottled, which may also lead to the fragility and fragility of the wall.

solution

In view of the above problems, corresponding measures should be taken, such as frequent cleaning and maintenance of stone walls, selection of high-quality materials, timely anti-corrosion protection and surface treatment of stone walls. Only in this way can the beauty and life of the wall be guaranteed.