How is Lime Plaster Made?

The process of making Lime Plaster from Limestone.

First, our products and all the ingredients are manufactured in a small region of the Veneto Province of Northern Italy and 40Km from the city of Venezia (Venice).

The Limestone we use is not quarried like most limestone in the world, but ours is dredged from river beds that pile up with stone every spring. These rivers originate in the Italian Alps and Dolomite Mountains of Northern Italy where the stones travel hundreds of kilometers tumbling down these rivers for decades. This process of retrieving the limestone has very little environmental impact and leaves little or no footprint on earth.

The Limestone from Northern Italy has chalk, shell and makes for a superior limestone. Known as Calcium Carbonate (CaCO₃) it is heated in large furnaces to produce Calcium Oxide (CaO). This produces the lime powder or "flour" which is the basis that make our plasters so clean and natural.

-Water (H₂O) is then added (Hydrated) and aged underground or in silos for months and sometimes a year. The result produces Calcium Hydroxide (Ca(OH)²), or Hydrated Slaked Lime Putty.

-The Lime is then mixed from an old family recipe with Marble, Minerals and other aggregates and organic matter and sealed in buckets ready to be used by the applicator.

Once the products are applied to the wall, the H₂O evaporates off the surface and Carbon Dioxide (CO₂) in the air causes the Calcium Hydroxide to carbonate making the plaster hard; over time hardening back to its original stone state. This diagram shows the full cycle of Limestone from stone to wall.

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