Corruption factors of building facades

What are you reading in this article?

 Chemical
 Physical causes of 

 Factors that lead to destruction and corruption in building stone are :

 Metal decay and rock destruction :

 Fire and stone destruction:

  Tracing and rock destruction:

Parts of the building such as shutters, canopies, building chairs and window floors are destroyed by frost more than other parts, and among building stones, limestone and dolomite more than sandstone are subject to destruction due to frost. They are icy and rocks such as marble, sheet and granite are affected by frost due to their very low porosity .

                                                       
 

 Soluble salts and rock degradation :

 Environmental pollution and destruction of building stones :

The surface of some building stones is washable, but others are not. In calcium sulfate limestone produced on the surface, it is washed with water. But on surfaces that are not washable, the surface is blackened by soot and turns into hard crusts and bumps that have limestone dust around it. A stone like marble, when attacked by acids in the air, becomes rough over time, and due to the dense texture and density of this stone, it is less affected by crystallization.