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Where Artistry Begins
Polished plaster, or stucco veneziano, is slaked lime and finely ground marble laid on in thin coats and burnished with a steel trowel until it shines. The shine is compressed stone, not a varnish over the top of it. It is the finish most people are picturing when they say Venetian plaster. We supply it machine tinted to your colour from our Birmingham studio, and our own applicators lay it across the UK.
The material is matured lime putty with marble ground to a powder rather than to a grit. There is no aggregate you can feel, so what you read on a finished wall is not texture but depth: several near transparent layers, each one trowelled tight over the last, each one letting a little of the one beneath show through. That is where the cloud and the movement come from. Burnishing then compresses the surface until it reflects, and a wax closes it. Nothing is sprayed on and nothing is printed. Cut into a finished wall and it is the same material the whole way down to the primer.
The wall is primed first, because lime needs something to key into and a primer stops the plaster drinking in unevenly. After that the coats go on thin. The first is a laying coat that covers and levels; the ones after it are pressed on with a flexible steel trowel and taken back to almost nothing, so each pass adds colour and depth rather than thickness. The finished build is thinner than a coat of paint feels. Then comes the burnish: the same trowel, held flat, worked over the surface at the right point of set, compressing the marble until it starts to reflect. Wax goes on last and is buffed in by hand.
This is the part people underestimate. A polished surface reflects, and a reflection shows every hollow, every patched chase and every wave that flat paint hides. Before we quote a room we look at the wall in raking light rather than straight on, and we say honestly whether it wants skimming or boarding out first. On sound new plasterboard the work is usually straightforward. On an old wall carrying fifty years of repairs it may not be, and the preparation can cost more than the plaster. The finish also wants a wall that does not move. Solid masonry and sound board are fine. A flexing timber frame or loose lath is not, and there marmorino or limewash is the better answer.
Colour goes in at our studio, on a machine, so the tub arrives already the shade you chose rather than something you stir a tint into on site. Bring us a reference and we match it. The thing to understand is that a polished wall is never one flat colour. Because the coats are translucent and laid at different pressures, you see through the top layer into the ones below, and the wall shifts as you walk past it and as the daylight turns. Deep colours show that movement most. Very pale ones read closer to a smooth painted wall with a sheen on it. Our colours page explains how to choose, and a sample board settles it faster than any screen will.
Left bare, burnished lime is already hard and already carries a sheen. Wax takes it further: it closes the surface, deepens the colour and lifts the shine, and it is what most people mean when they picture a Venetian wall. Natural bees wax is the usual choice, and a metallic wax pushes the wall somewhere else again. Wax also gives useful water resistance, which is why polished plaster sits happily on a bathroom wall, behind a basin, or in a cloakroom. It is not the answer inside a shower enclosure or a steam room, where standing water and constant heat ask for tadelakt instead. Kitchens are fine away from the hob, where grease and heat are a separate problem.
It is stone, so it behaves like stone. It does not scuff the way emulsion does, it does not trap moisture behind a film, and it goes on hardening long after the trowel has left it — touch dry in hours, properly hard over weeks. Clean it with a damp cloth or a plaster cleaner made for lime. Anything abrasive or strongly acidic will dull the burnish, so keep the bathroom sprays away from it. Marks that do appear can often be worked out with wax and a cloth rather than a repair. Damage that goes deeper is patchable, though a patch on a reflective surface wants a skilled hand, and ideally the hand that laid it. Ours come back.
Not inside a shower enclosure or a steam room, where standing water and constant heat are tadelakt’s territory. Not directly behind a hob. Not on a wall that moves — a flexing timber frame, loose lath, or an extension still settling. And not over a wavy, badly patched wall unless you are prepared to pay to make it flat first, because a reflective surface will find every dip in it.
Veneziano Plaster 24kg
Classic polished Venetian plaster, machine tinted to your colour before it ships.£59.00
Veneziano Metallico 20kg
The same finish with a metallic shift in it, for a wall that moves.£77.00
Primer 4 (5lt)
Primer for the wall first, so the coats key and dry evenly.£34.00
Bee's Wax Natural
Natural bees wax to close and deepen the burnish, buffed in by hand.£19.00
Sample Board
One board in your colour, to take home and look at in daylight.£8.00Every tub is machine-tinted to your colour before it ships. Not sure of the colour? The colour library holds forty-eight house tints and we match any NCS or RAL reference.
Honestly, this is the hardest finish we sell. The material goes on easily enough. The difficulty is the burnish, which has a short window on any given patch, and if you miss it the wall stays dull or the trowel drags a mark across it. That, plus the flatness the surface demands, is why most first attempts read as textured paint. If you want to lay it yourself, come and learn it at the Academy. If it is your own hallway and you get one go, let us do it.
Learn it, or have it done
Our Academy in Birmingham teaches these finishes at the bench, beginner through advanced. Or our own applicators install across the UK from the same materials.
See the workBroadly, yes. Polished plaster is the English trade term, stucco veneziano is the Italian one, and Venetian plaster is the name that travelled. All three describe lime and finely ground marble burnished to a shine. Where the words get loose is that some suppliers sell an acrylic paste under the same heading. Ours is lime, and it behaves like lime.
On the walls, yes, waxed or sealed, and it suits a bathroom well because there is no grout and no joint for mould to sit in. Inside the shower enclosure itself we would not use it. That is tadelakt’s job, a lime finish compressed and soaped specifically to stand up to running water. We will tell you so when you ask us to quote.
The material is straightforward: a 24kg tub of our veneziano plaster is £59 tinted to your colour, and the metallico is £77 for 20kg. Installation is the variable, because it turns on the state of the wall, the height, the access and how far we travel. Tell us about the room and we will price it properly rather than guess at it.
On a sound, still wall, no. It is a thin hard skin and it fails where the thing underneath it moves: a flexing stud wall, a new extension still drying out, a board joint that was never properly taped. That is a substrate question rather than a material one, and it is why we look at the wall before we take the job on.
Order a sample board and put it on the actual wall, in the actual light, before you commit a whole room to it. If you would rather we laid it, ring 07592 929191 and tell us about the wall.
Authentic Venetian plaster, machine-tinted to your colour and made for each order. Materials, installation and master-led training, since 2021.
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