Can I limewash sandstone?
Tŷ-Mawr posted this on 26 Jun 2017
Can I limewash sandstone?
There is a school of thought that limewash should not be used on sandstone which has not previously been treated with limewash, as the introduction of lime can lead to its deterioration. The Lime can attack the sandstone and cause it to deteriorate, turning it into a calcareous Sandstone with less resistance to pollution. However, that said there are numerous historical examples of limewashed sandstone which have survived the centuries.
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