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Finish

Polished plaster.

The high-sheen finish most people mean when they say Venetian plaster. Lime, burnished hard, until the wall reflects light like stone.

01 What it is

What polished plaster actually is

Polished plaster is fine lime putty with a very fine marble aggregate, laid in thin coats and burnished with a steel trowel until the surface closes and takes a sheen. Done well it reads as polished stone rather than a coating, and the depth changes as the light moves across it through the day. That movement is the whole reason it costs what it does; a photograph cannot show it and paint cannot fake it.

Our Grassello comes from Zavoré — aged lime putty rather than a synthetic base, which is what lets it take a burnish at all.

02 Where it works

Where polished plaster belongs

It suits walls that are seen: hallways, stairwells, chimney breasts, media walls, reception desks and bar fronts. It is closed and wipeable, so it survives being touched. What it does not suit is a wall that has not been prepared properly. At high sheen every substrate imperfection, every join and every trowel mark is visible from across the room, which is why the preparation is most of the job and why quotations for it vary so wildly.

How it goes on

Substrate checked and made good, primed, then two to three coats laid thin and burnished as each one sets. Waxed or sealed at the end depending on where it is and what it has to survive. Between coats the wall has to dry, so a polished wall is a few days rather than a few hours, and rushing it is what causes the failures you see in other people's work.

03 Our work

Polished plaster we have finished

Our own projects, photographed on site. Not every photograph on this page is this finish — the gallery is grouped by project and says which is which.

04 Questions

Common questions about polished plaster

What is the difference between polished plaster and Venetian plaster?
Venetian plaster is the family; polished plaster is one member of it. Both are lime-based finishes laid in thin coats. Polished plaster uses a finer aggregate and is burnished harder, so it ends up reflective. Marmorino, from the same family, uses a coarser aggregate and stays matt or low-sheen.
Can polished plaster go in a bathroom?
In a bathroom, yes, away from direct water. In a shower or wet room, no — you want Tadelakt or microcement, which are designed to be waterproof. Anyone offering ordinary polished plaster for a shower is selling you a failure.
How much does polished plaster cost?
It is priced by the wall rather than by the metre alone: the finish, the substrate and its preparation, the number of coats and the access all move the number. You get a fixed written price after the sample, itemised, and it does not move once agreed.
05 Where we work

Polished plaster across the UK

Our studio is in Birmingham. These are the cities we are asked for this in most often, and each has its own page.

06 Start

Send us the wall

A photograph and a rough size is enough to begin. You will have next steps within one working day, and a sample panel made in your finish before anything is agreed.

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