Marmorino

Marmorino is a traditional lime plaster finish used on walls and ceilings. It is made from lime putty plaster mixed with marble dust or powder, and may be colored with natural pigments. When applied in thin coats and burnished, it yields a smooth, marble-like surface with a soft to high gloss. The finish is breathable and durable, and repairs are typically done with lime-based mortars.

Origins and name: The term derives from the Italian word marmo, meaning marble. Marmorino originated in Italy and became prominent in Renaissance and Baroque architecture, with notable use in inland regions and in Venice. It was valued for its refined appearance, light reflection, and tactile depth.

Technique and finishes: A typical process involves a base coat on a masonry substrate, a middle layer containing lime and marble dust, and a final finishing coat that is smoothed and polished. Variations create different textures, such as a very smooth, polished “marmorino liscio” or a slightly textured “bucciato” effect achieved with combing or stippling. Pigments can be added to produce color. After curing, a protective wax or sealant may be applied, though this can reduce breathability.

Modern use and maintenance: In contemporary practice, marmorino is revived for historic restorations and high-end interiors. Modern formulations often maintain lime as the binder and marble dust as filler, sometimes with polymer modifiers. It requires a breathable substrate and careful maintenance; excessive moisture or non-porous coatings can cause efflorescence or deterioration. Cleaning is typically done with gentle, damp methods and repairs are performed with lime-based mortars.