Venetian Plaster: What It Is, How It's Applied, and What It Costs

Venetian plaster is one of the most sought-after specialist finishes in interior decoration — a polished, marble-like wall treatment that has been used in the finest European interiors for centuries. In London's premium homes, it is increasingly popular as an alternative to paint for principal rooms, hallways, and feature walls. But Venetian plaster is also one of the most misunderstood finishes — misrepresented, frequently imitated with inferior products, and often applied by decorators who lack the skills to do it justice.

What Is Venetian Plaster?

True Venetian plaster — known in Italian as marmorino or stucco veneziano — is a coating made from slaked lime (calcium hydroxide) mixed with fine marble dust. It has been used in Italian architecture since antiquity, gaining its name from Venice where it was extensively used in the Renaissance palaces along the Grand Canal. The material is applied in multiple thin layers and then burnished with a steel trowel while still slightly damp, compressing the particles to create a dense, smooth surface with a characteristic translucent depth.

The Application Process

A professional Venetian plaster application involves several stages:

• Surface preparation: the substrate must be flat, sound, and free of any dust or grease. Any cracks are filled and the wall is sanded smooth. A base coat of tinted plaster is applied and left to cure.
• First coat: a thin layer of Venetian plaster is applied with a stainless-steel trowel in broad, overlapping strokes. This coat is allowed to dry completely — usually overnight.
• Second coat: a second layer is applied, working over the first to create depth and variation. The plaster is manipulated to create the desired texture and tonal variation.
• Burnishing: while the final coat is still slightly damp, the surface is burnished with a clean, flat trowel in circular motions. This compresses the surface and creates the characteristic sheen.
• Sealing: once fully cured, the surface is typically sealed with a thin coat of beeswax or synthetic wax to enhance the sheen and protect the finish.

Which Rooms Suit Venetian Plaster?

Venetian plaster works best in rooms where its visual drama can be appreciated — principal reception rooms, hallways, master bedrooms, and bathrooms (where its water-resistance, once sealed, makes it a practical alternative to tile). It is less suited to rooms with very uneven walls, as Venetian plaster is largely self-levelling but will not disguise major imperfections.

What Does Venetian Plaster Cost?

For a professionally applied Venetian plaster finish in London, expect to pay between £80 and £150 per square metre, depending on the complexity of the finish, the condition of the substrate, and the specification of materials. A typical double reception room of 60 square metres might cost between £5,000 and £9,000 for walls and ceiling. This is significantly more expensive than paint, but the finish — when executed correctly — is in a different category entirely and will last for decades without maintenance beyond occasional waxing.

Hampstead Painting Company offers Venetian plaster as part of our specialist finishing service. Request a quote or call 020 3874 2670 to discuss your project.