| Effects of Impurities in Natural Stones |
The major Non-performing Structural ailment is Porosity that enables ingress of various deteriorating and damaging external factors and elements.
- Absorption of dirt, dust and other stains into the structure causes dirty and yellowish looks. Any amount of surface cleaning does not eliminate penetrated stains and other ingredients.
- The ingress of moisture and pollutant gases (especially sulfurous) deteriorates and weakens highly porous stone over a period of time restricting their use especially to exterior facades.
- Surface erosion and Flaking of very old heritage and historical monuments is a great concern.
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