Polished plaster is a broad term for lime-based wall finishes that are burnished to a high-gloss or satin sheen. It includes Venetian plaster, Grassello di Calce, and other Italian finishes that share the same fundamental materials — lime putty, marble dust, and natural pigments — but differ in application technique and final sheen.
In Miami, polished plaster is prized for its depth, luminosity, and ability to create a seamless, marble-like surface that reflects light and transforms the character of a room. It is used in luxury homes, hotels, restaurants, and commercial spaces where design quality matters most.
Exotic Wall Finishes founder Gian Carlo Sagasti is a Novacolor Global Ambassador (2017) and has been applying polished plaster in Miami since 2015. He has been working with Italian lime finishes since 2003.
Polished plaster is made from aged lime putty, fine marble dust, and natural mineral pigments. It is applied in multiple thin layers and then burnished — compressed and polished — with a stainless steel trowel. The burnishing process closes the surface and creates a dense, reflective finish that looks like polished stone.
The term “polished plaster” encompasses several related finishes:
What distinguishes polished plaster from other wall finishes is its depth. Unlike paint, which sits on the surface as a flat film, polished plaster has layers of material that create a sense of movement and dimension. Light doesn’t just reflect off it — it penetrates and bounces back.
Miami’s climate and design sensibility make polished plaster an especially strong choice.
Like all lime-based finishes, polished plaster is breathable. It allows moisture vapor to pass through the wall rather than trapping it inside. In Miami’s humid climate, this is critical — trapped moisture leads to mold, mildew, and structural damage. Polished plaster prevents this.
Lime’s alkaline pH (12–13) creates an environment where mold and mildew cannot grow. This is one of the primary reasons polished plaster is favored in Miami’s bathrooms, kitchens, and coastal properties.
For homes in Miami Beach, Key Biscayne, and other coastal areas, salt air damages paint and many finishes. Polished plaster is unaffected. Lime and marble are mineral-based and don’t react to salt.
No grout lines, no seams, no wallpaper edges. Polished plaster creates a continuous surface that is especially valuable in modern Miami interiors where clean lines and minimalism are prioritized.
Polished plaster has been used in Italian palazzi, Venetian villas, and European estates for centuries. In Miami, it’s used in:
Gian Carlo Sagasti was named a Novacolor Global Ambassador in 2017 — a designation granted to a small number of artisans worldwide who demonstrate exceptional mastery of lime-based finishes. Novacolor is one of Italy’s most respected manufacturers of lime plasters and mineral paints.
Gian Carlo has been featured as a model for Marmorino Tools Worldwide, the Italian manufacturer of professional plastering trowels. His technique has been documented and used in training materials for plasterers internationally.
Gian Carlo has been working with Italian lime finishes since 2003 — over 20 years of hands-on experience with polished plaster.
We’ve been operating in Miami-Dade, Broward, and Palm Beach counties since 2015 — over a decade of experience applying polished plaster in South Florida’s specific climate.
His work has been featured in The Way Magazine (“Il re del marmorino”), on The Aggregate podcast by New Age Artisans, and in industry training materials.
Every polished plaster project begins with a site visit or detailed video consultation. We assess:
We provide a written proposal including finish specification, timeline, and required surface preparation.
Preparation determines the final result. We do not skip this step.
In bathrooms and kitchens, we may recommend a waterproof membrane behind the plaster.
We apply 2 to 3 base coats of lime putty. Each coat is troweled on thinly and allowed to cure. Base coats build the foundation and provide an even surface for the finish layers.
This is where the artistry happens. We apply 2 to 3 thin layers of pigmented polished plaster. Each layer is:
The amount of burnishing determines the final sheen — from satin to mirror-like gloss. High-gloss finishes require additional time on the wall and significantly more skill.
Once cured, we apply a breathable sealer or natural wax. Sealing protects against moisture, staining, and everyday wear while preserving the breathability that makes lime-based finishes so effective in Miami.
We walk the project with the client, review the finish under natural and artificial light, touch up any imperfections, and provide written care instructions.
| Finish | Appearance | Durability | Miami Humidity | Mold Resistance | Cost |
|---|---|---|---|---|---|
| Polished Plaster | High-gloss, marble-like | 20+ years | Excellent | High | Moderate–High |
| Venetian Plaster | Polished, marble-like | 20+ years | Excellent | High | Moderate–High |
| Marmorino | Matte, stone-like | 20+ years | Excellent | High | Moderate |
| Lime Wash | Soft, matte, chalky | 5–10 years | Excellent | High | Low–Moderate |
| Microcement | Seamless, industrial | 10–15 years | Excellent (sealed) | High | Moderate–High |
| Paint | Flat, uniform | 3–5 years | Poor | Low | Low |
Recent polished plaster projects completed by Exotic Wall Finishes.
Polished plaster is the broader category. Venetian plaster is a type of polished plaster. Both are lime-based and burnished to a sheen. The terms are often used interchangeably.
No, it’s water-resistant but not waterproof on its own. In wet areas, we apply a breathable waterproof sealer and often a waterproof membrane behind the plaster.
With proper application and care, polished plaster lasts 20 to 30 years or more, even in Miami’s humid climate.
Yes — as long as the substrate is sound. We regularly apply polished plaster over drywall, plaster, and concrete.
In most cases, existing paint must be removed or mechanically prepared before application. Lime needs a mineral substrate to bond properly.
Yes. Lime’s alkaline pH (12–13) prevents mold and mildew growth.
Dust weekly with a soft cloth or microfiber duster. For high-gloss finishes, a dry microfiber cloth is usually enough. For marks, use a damp cloth with mild soap.
Yes. Minor scratches can usually be touched up. Larger repairs require a skilled artisan.
Pricing depends on finish level, wall size, and prep. As a general reference, polished plaster typically ranges from $12 to $35+ per square foot installed. High-gloss finishes sit at the upper end.
We serve Miami-Dade, Broward, and Palm Beach counties. For larger projects, we can travel further.
A feature wall takes 2–3 days. A full room takes 3–5 days. High-gloss finishes take longer.
Yes. We work with mineral pigments and can match existing colors or develop custom shades. Sample boards are provided before installation.
Ready to elevate your home or commercial space with polished plaster? We’d love to hear about your project.
Call(305) 801-2581
Emailvenetianman@live.com
Studio8900 SW 117 Ave, Suite C208, Miami, FL 33186
Service areaMiami-Dade, Broward, and Palm Beach counties
