• One of the Stanton Moor Sandstone weaknesses is its poor reaction to salt , having performed poorly in the saturated sodium sulphate crystallisation tests .
• This means that its resistance to salt damage is light and issues such as effluence need to be managed .
• The use of salt-based sodium cleaning products / agents is a bad choice as they are highly likely to breakdown the outer and expose the softer inner crust of the stone .
• If other pollutants such as oils , silicone , or acid type products leach and dwell on the soft sandstone surface , it is likely to weaken , break down , and open the inner surface to unnecessary weathering .
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