Facade Plaster: A Classification

10.07.2026 | UP-TO-DATE INFORMATION

Stucco finishing is an old (known since the 12th century) and proven way to beautify a house. Stucco gives the "face" of a house its character, but that is not its only advantage.

Advantages:

good vapor permeability in some types: plaster lets the wall structure release moisture, which is especially important in winter in cold climates;
weather resistance and moisture resistance;
good hiding power: it conceals masonry joints and moderate wall irregularities;
resistance to weathering, fading, and chemicals dissolved in water and air;
frost resistance (thanks to the free evaporation of moisture);
mechanical strength (thanks to the use of reinforcing mesh);
the ability to decorate the surface, thanks to a wide variety of textures;
low cost among the premium finishes;
additional sound and thermal insulation for the house (plasters with bulk fillers) — debatable; see below.

BASIC AND DECORATIVE

When developing the design of your home's facade, we comment on every stage, helping you understand the finer points and make an informed choice.

So, for clarity, let's divide plasters into two groups: basic and decorative.

Basic (basecoat) plaster serves as a solid base for paint, decorative plaster, tile, or stone and performs no aesthetic function beyond creating an even surface. It is made from unpigmented lime and cement mortars (gypsum mortars are not used for exterior work).

Decorative plasters make a house look interesting and can style the facade to resemble more expensive materials (stone, wood, brick, rustication). To make decorative plaster, manufacturers take a traditional mortar and add fillers. They use marble and granite crumb, coarse sand, brick crumb, or mortars tinted with dry paints. Such paints are resistant to alkalis and sunlight, do not reduce the strength of the plaster, and produce subtler shades of color.

By their color component, decorative plasters come in several types:

Stone-based — on a cement mortar with crumbs of stone. It imitates natural facing stones: marble, limestone, granite, and tuff.

Pros: the molded surface of this plaster looks striking (for more on facade plaster textures, see here). It is suitable for finishing concrete and brick surfaces when cladding the main parts of buildings — walls, columns, and plinths.

Pigmented plaster is based on a lime-sand mortar with added coloring pigments. Quartz, marble, lime, tuff, and other fine-grained sands (0.3–1.2 mm) are used as the aggregate. It is used for finishing surfaces of lightweight concrete, tuff, and porous blocks.

Pros: durable, plastic, and easy to apply and work. It offers various textures — fur-like, dune-like, sandstone- or torn-stone-like, rough, or grooved. The decoration is applied with stamps and rollers.

Terrazzite-based — a special terrazzite mix of quartz sand, stone crumb, mica, cement, and lime. The filler can have a wide range of grain sizes, from 1 to 6 mm, and this determines the texture of the finished wall. The color of terrazzite plaster depends largely on the color of the mineral paint added to the mix.

Pros: very decorative; versatile — used for finishing all parts of buildings.

NB. If you are finishing a facade in a region with cold winters, all the plasters listed will be applied over insulation on a special mesh.

stone-based plaster — 1. Stone-based plaster.

Yellow stucco facade — 4. Colored plaster with a fur-like texture covers the solid walls and is set off by smooth white decorative elements, giving the house's facade a classic feel.

Pink stucco facade — 5. The rough surface of the colored plaster on the facade walls complements the smooth lines of the arched openings without shifting the accents away from the smooth white decorative elements.

White stucco facade — 6. Smooth finishes and straight lines need not be boring, as this modernist facade shows. The demands here are high for stucco that resists soiling.

Choosing a stucco for your home

By their basic composition and properties, let's divide plasters into four types:

Mineral plaster — a strong cement material, inexpensive and reliable. Its drawbacks, besides brittleness, include an "earthy" color palette, but that can be remedied: paint the cured mortar with a colored silicate paint in any color (there is a choice within RAL Design).
Acrylic plaster is an elastic material based on acrylic resin, and it tolerates slight settling of the facade without cracking. It does not let vapor pass from inside the walls, so it must be used with a clear understanding of the wall's construction (its "pie").
Silicate plaster — based on liquid glass, with the same advantages as acrylic plaster.
Silicone plaster — expensive but functional: it lets vapor through (almost always a necessary property) and is very elastic. It forms a hydrophobic, self-cleaning surface, so the facade needs less maintenance. However, elastic paints dry out in the sun and air over the years and lose their flexibility, so a stable base for the plaster is still essential.

The choice of plaster for a facade depends on the intended use and the desired appearance. Consider the micro-texture, color, sheen, and the ability to form relief. The creative possibilities of combined stucco facades are inexhaustible — take a look in our gallery.

«Warm» stucco

There is a class of "warm" plasters with bulk fillers — these are poorly suited to facades. Mineral fillers (perlite, vermiculite) absorb moisture and get dirty, polystyrene dries out in the sun and burns, cellular glass blocks vapor flow, and sawdust swells and rots. Such plasters are brittle and not all that warm. You cannot build up a thick layer of them to achieve meaningful thermal insulation, and you certainly cannot form a base layer of them and then glue on tile or stone (a design solution we have seen in our practice).

If a house needs insulating, use dedicated insulation materials; they have better properties and perform reliably.

Sometimes bulk fillers are used on facades to reduce the layer of special decorative "thick-layer" plaster. This makes it possible to form a texture.

half-timbered facade — 7. Facades styled to look half-timbered work well because the "fur coat" of plain mineral plaster looks natural on them, thanks to the boldness of the large details.

Plaster molded to resemble shingles — 8. Acrylic plaster is easy to texture and can style a facade to resemble piece finishes — stone or tile. In this case, shingles.