Venetian & Polished Plaster

What is Venetian plaster — and where does it work best?

Venetian plaster is a lime-based finish loaded with marble dust, applied in several thin trowel coats and burnished to a stone-like sheen. Unlike paint or wallpaper it has genuine depth — light moves through the layers rather than bouncing off a flat film. It works best on feature walls, chimney breasts, hallways and bathrooms.

The best candidates are walls that get looked at: a living-room chimney breast, the wall behind a media unit, a dining room, a hallway where raking light would cruelly expose ordinary paint but makes polished plaster glow. Bathrooms suit the tadelakt-style finishes particularly well — lime is naturally alkaline and moisture-tolerant, which is why variants of this finish have lined Moroccan hammams for centuries.

Where we talk clients out of it: high-traffic corridors at toddler height, rentals, and walls that regularly take fixings — the finish repairs far less invisibly than paint. One wall done beautifully beats four done to a budget, and because the material is lime-based it shares a heritage with our heritage lime plastering — the same chemistry, dressed for a different century.

Marmorino, tadelakt or lucidato: choosing a finish

Marmorino is the versatile middle ground — a soft, matt-to-satin stone finish with gentle cloud-like movement, ideal for living rooms and halls. Tadelakt-style finishes are burnished and soap-sealed for a water-tolerant, softly waxy surface suited to bathrooms. Lucidato (often called spatulato) is the high-polish option: glassy, deep and dramatic.

Choose by room and by light. Marmorino forgives and flatters: it reads as honed limestone, works in almost any colour, and sits comfortably in period and modern rooms alike — it is what most people picture when they say "polished plaster". Lucidato is a statement: multiple ultra-thin coats compressed to a near-mirror sheen, spectacular on a chimney breast under good lighting, and correspondingly less tolerant of substrate flaws and careless furniture.

The tadelakt-style finishes earn their keep where water lives — bath surrounds, shower-adjacent walls, cloakrooms — burnished with a stone and sealed with olive-oil soap that reacts with the lime to form a water-resistant skin. Sample boards settle the choice: we make up your shortlist in your colours and you pick from the real thing, not a brochure.

What does polished plaster cost in Surrey?

A polished plaster feature wall typically costs £500–£1,500 with us, depending on size, finish and substrate condition — or around £80–£180 per square metre on larger schemes. Lucidato sits at the top of the range, marmorino toward the middle, and the price includes substrate preparation and sample boards.

It is honest money for slow work. A single wall takes multiple visits: priming, two or more base coats, the finish coats applied in thin passes with drying time between, then burnishing — and tadelakt-style finishes add the soap-sealing stage. What you are buying is a surface with the depth of stone at a fraction of the cost of cladding a wall in actual marble.

The variable that moves quotes most is the state of the wall underneath. Polished plaster needs a dead-flat, stable, primed substrate; an uneven or previously patched wall needs a full skim and priming first, which we quote as its own line so you can see exactly where the money goes. On new plasterboard, the preparation is minimal and the price reflects that.

How is a polished plaster wall built up?

In layers, over several days. The substrate is skimmed dead flat and primed, then two or more base coats of the lime-and-marble material establish the body. The finish coats go on in thin, overlapping trowel passes, and the final coat is compressed — burnished — with the steel blade until the sheen develops.

The burnishing is the part no machine replicates. As the trowel compresses the final coat, the marble particles tighten and align, and the surface begins to reflect — unevenly, organically, with the cloud-and-vein movement that makes each wall a one-off. Pigment goes into the material itself, so colour is fade-stable and consistent through the coats.

Sealing depends on the finish and the room: wax for depth and wipeability on living-space walls, olive-oil soap on tadelakt-style bathroom finishes, or nothing where a raw matt marmorino suits the scheme. Edges and junctions are planned in advance — polished plaster meets cornice and ceiling lines beautifully when the detail is agreed before the first coat. Allow roughly a week start-to-finish for a single wall, most of it drying time between coats.

How do you look after a polished plaster finish?

Gently, and rarely. Sealed polished plaster needs nothing more than a dust with a dry cloth and the occasional wipe with a barely damp one. No abrasive cleaners, no spray polishes, no scrubbing — the sheen is in the compressed surface itself, and harsh products dull it.

Waxed finishes in living areas can be re-waxed every few years to refresh the depth — a short visit, not a redecoration. Tadelakt-style bathroom surfaces are maintained the way they were made: an occasional wipe-over with the same olive-oil soap keeps the water-resistant skin fed. Avoid suction fixings and sharp impacts; the material is hard, but like stone it can chip.

Repairs are the honest caveat. A damaged patch cannot be invisibly spot-filled the way paint can — the burnish and movement will not match — so meaningful damage usually means re-doing the panel. In practice it rarely comes up, and a well-kept polished plaster wall looks better at ten years old than most paint does at two.