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What rock is in plaster?

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Anonymous

15y ago
Updated: 8/18/2019

In lime based plaster, typically used to create beautiful interior polished plaster walls, or to create those gorgeous exterior walls seen throughout Europe, and higher end homes in North America, Limestone is the rock found in plaster.

Limestone is created over millenia from fossilized sea shells. To create the plaster, the limestone is burned at very high temperatures and then slaked with water for anywhere from six months to ten years. The longer the slaking period, the better the quality of the "grassello" or lime putty produced.

This lime putty is then mixed with marble flour to produce lime plaster.

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15y ago

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