This sample of a Marmorino lime finish on a cocciopesto base was provided by Mick Gasz of Core Conservation Ltd ( (www.coreconservation.co.uk)
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This combination represents an authentic and durable finish used in Venice over hundreds of years. For an example of where this has been sucessfully used in conservation, see the case study of the restoration of Gran Teatro La Fenice. Watch the YouTube video https://youtu.be/Bs2cNsxE1WY?si=4FzgQb8oCWwURn17
Marmorino Venziano meaning “little marble” is made from pure slaked lime and small marble particles. It was developed in the 15th century in renaissance Venice and is still requested by architects and designers worldwide, especially where an elegant and glossy surface is required (read more). The finish is obtained by compacting the material and this can be given a water -resistant finish with soap and wax. The finish is suitable for walls and floors (Venetian Pastellone floors)
Cocciopesto is a mix of lime and brick dust or crushed terracotta which is suitable for use as a plaster, flooring or lining where moisture is high (bathrooms). It provides vapour buffering and can resist high humidity.
Further links from Core Conservation:
A Brief History Of Lime Plasters, Historical Development
Moisture Sources In Old Buildings
Replastering Old Damp Walls – Core Conservation