A change in the color of building stone can stem from various causes and does not necessarily indicate poor quality. Factors such as the type of stone, environmental conditions, processing methods, and even maintenance practices can influence its visual color.

1. Direct sunlight ☀️

Prolonged exposure of stone to sunlight and UV radiation can cause a gradual change in color in certain types of stone or surface coatings.

2. Absorption of moisture and water 💧

Some stones, particularly porous ones, absorb water and moisture. Moisture penetration can cause temporary darkening, staining, or an alteration in the stone’s appearance.

3.آلودگی و گردوغبار

Building facade stone is constantly exposed to dust, vehicle exhaust, and air pollution. The accumulation of these substances on the stone’s surface gradually causes its appearance to become dull or dark.

4. Salinity and minerals present in the water

The presence of salts and minerals in the water or the materials behind the stone can cause white stains and alter the appearance of the stone’s surface. This issue is more frequently observed in facades exposed to moisture.

5. Use of unsuitable detergents

The use of acids, strong detergents, or unsuitable chemicals may damage the surface of certain stones, causing discoloration, dulling, or staining.

6. Natural characteristics of the stone itself

Natural stone is not a completely uniform, man-made product. Variations in minerals, veining, porosity, and stone structure can result in color differences across different sections.

7. Quality of stone processing and execution

The type of honing, resin, epoxy, protective coatings, and even the installation method can affect the stone’s final appearance. Improper execution may also lead to staining or discoloration over time.

How can we prevent the stone from changing color?

Selecting the right stone for the intended location of use

Made of high-quality stone with proper processing.

Correct and principled execution of stone

Prevention of moisture ingress, if required.

Using special stone detergents

Regular cleaning of the stone surface

Use of suitable protective coatings for certain applications

Important point: When selecting stone for the building facade, do not consider only aesthetics and initial color; water absorption, porosity, the project site’s climatic conditions, and the stone’s processing method are also highly important.