Polished plaster is a wall finish created from natural ingredients such as lime, marble dust, and color. It’s applied manually in thin coats, smoothed, and polished to finish with a stone-like appearance and soft glow. It produces a textured, sophisticated finish that appears as if made of actual marble, limestone, or even concrete — yet at a fraction of the weight and expense of solid stone.
While it’s gained popularity as a feature of contemporary interiors, polished plaster is thousands of years old. The process originated in Ancient Rome, where it was referred to as Venetian plaster. It’s now applied in houses, stores, hotels, and offices to impart a luxurious appearance with a natural touch.
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How It’s Applied
Polished plaster is a sophisticated work that requires time and experience. It typically begins with properly preparing the wall — the surface should be even, clean, and secure. It begins with a base coat and then two or more thin coats of the plaster mixture.
Each coat is carefully trowelled on and allowed to dry before polishing. Some of the finishes are glossy and smooth, while others have a more matte or textured look, depending on what you’re aiming for. At the finish, the application of wax can enhance the colour, impart a light sheen, and protect against water and stains.
Since it’s hand-applied, no two walls are ever exactly alike. That’s why polished plaster is perfect for those who need something more natural and distinct than wallpaper or paint.
Where It’s Used
Pretty much anywhere within a building can have polished plaster — feature walls, ceilings, stairwells, bathrooms, kitchens, and office space. It’s particularly favored where individuals wish to be visually striking without utilising strong colours or designs.
In contemporary houses, it’s commonly employed as a background for open-plan living rooms, behind the fireplace, or in corridors to create a sense of depth and texture. In shopping or hospitality environments, it provides a sleek, luxury finish that can be designed to align with the brand or the atmosphere of the environment.
Even though it appears fragile, polished plaster is remarkably resilient once hardened. It’s breathable, so it won’t hold moisture, and resists cracking if done properly. It’s not meant to be subject to constant touch or wear and tear, though, so it might not be the best for worktops or floors.
Pros and Cons
Pros:
- Natural material with a fashionable finish
- Breathable and mould-proof
- Can last for years with minimal maintenance
- Custom colours and textures available
- Non-toxic and eco-friendly
Cons:
- More expensive than paint or standard plaster
- Needs skilled labour to apply properly
- Can be marked or scratched if not sealed
- Not ideal for DIY
While it does cost more upfront, many people see it as an investment. A well-done polished plaster wall can last a decade or more with minimal maintenance — no need for repainting every few years.