Use of polymer plaster for internal and external work (facades)

The use of polymer plaster for external and interior applications is growing in favor. Because of its strength and adaptability, it’s a great option for a variety of building and remodeling projects.

The flexibility of polymer plaster is one of its key benefits. It works well on a variety of surfaces, such as drywall, brick, and concrete. This makes it perfect for usage in the living room and on the facade of a building, among other places.

Additionally, polymer plaster has outstanding adhesion qualities, guaranteeing a finish that is resilient to peeling and cracking over time. Because of its resilience, it’s a dependable choice for high-traffic areas and outside surfaces that are exposed to the elements.

Furthermore, polymer plaster comes in a range of hues and textures, enabling artistic and personalized finishes. Polymer plaster can assist you in achieving the desired aesthetic, whether it be a textured, rustic feel or a smooth, modern appearance.

Types of polymer plaster by area of application

Polymer mixtures are bound together with dispersions of epoxy resin, acrylic, or polyurethane. A solution based on water is regarded as universal. Both internal and external work can be done with it. Only solvent-containing compositions are utilized for external finishing.

  • for finishing polystyrene foam insulation, acrylic solution is used;
  • basements – butadiene-styrene, styrene-acrylic or polyurethane-based;
  • walls – styrene-acrylic or acrylic binder;
  • mineral wool coatings – siloxane.

Reasons for the popularity of the material

The application of different chemical compounds aids in enhancing the building product’s adhesion to the surface and physical characteristics.

Polymer plasters are excellent for finishing work because they come in a wide variety of textures and colors. utilized in the processing of cement-sand bases, plasterboard, and concrete. Frequently utilized for facade and basement finishing, as well as interior wall decoration in residential, office, and public areas.

  • frost resistance;
  • elasticity;
  • vapor permeability;
  • water resistance;
  • resistance to mechanical damage;
  • durability (up to 20-25 years);
  • rapid strength gain;
  • solidity of the coating;
  • environmental safety of the material.
  • high price (compared to simple mineral compositions);
  • the surface requires preliminary preparation;
  • the solution is sold only in finished form;
  • open packaging with the mixture is not stored.

Experts point out that the building material’s benefits exceed all of its drawbacks.

Classification

The finishing solution is separated into special and decorative categories based on its intended use.

  • resin-soluble – epoxy or polyurethane (used only for outdoor use);
  • water-soluble – PV-acetate, styrene-acrylic and butadiene-styrene (universal).

  • siloxane;
  • acrylic;
  • polymer cement;
  • silicone.

Polymer decorative plaster

  • composition and color range of the mixture;
  • filler texture (granule shape and size);
  • method of applying the solution.
  • all types of sand (river, simple, mountain or quartz);
  • fragments of stones or shells (for mosaic mixture);
  • artificial granules (vermiculite or expanded clay);
  • stone or metal dust;
  • mica;
  • flocks;
  • synthetic fibers.

The proportion of granules determines the final solution’s characteristics. Plaster comes in two different grain sizes: fine-grained (like Venetian plaster) and coarse-grained (the filler diameter can go up to 5 mm).

The polymer mixture takes on strength fast, is plastic, and is simple to apply to a surface.

Acrylic

Building materials with acrylic bases are widely used for both interior and exterior projects.

  1. The strength and plasticity of the solution helps protect the walls from the effects of impacts.
  2. Resistance to moisture, UV rays, frost and temperature changes ensures the durability of the finish regardless of the weather conditions in the region.
  3. Vapor permeability of the plaster promotes good air circulation inside the room.
  4. Acrylic compounds provide additional sound insulation, retain heat.
  5. Performing work does not require special skills.
  6. A large selection of textures and colors of the material.
  7. Dirt on the finish is easily washed off with water.
  8. Good price-quality ratio.

Silicone

Outside work is where silicone mixture is most frequently used. It is thought to be more robust and of superior quality. Such a solution completely shields the walls from moisture, sunlight, frost, and cracks. As a result, the surface keeps its original look for a long time.

  • additives that provide resistance to weather conditions;
  • silicone resins guaranteeing durability;
  • synthetic fibers and organic fillers responsible for the decorative component;
  • pigment that forms the color spectrum.

Contaminants such as dust are trapped on the surface and do not get absorbed into the finish. Because of this, getting rid of them with just water and no other products is simple. The mixture is further enhanced with elements that shield coatings from fungi and mold. This means that silicone plaster can be applied to facades in humid climates to finish them.

This material will come with a slightly higher price tag than other polymer compounds. Its aesthetic qualities and physical attributes, however, provide ample justification.

Silicate

The foundation of this kind of plaster is liquid glass. It is utilized to decorate buildings’ exteriors. The completed solution hardens quickly, and special application techniques are needed. It is therefore advised to give the task to skilled artisans.

  • thermal and sound insulation;
  • resistance to adverse climatic conditions and aggressive influence of the urban environment;
  • average service life is 20-25 years;
  • the finish does not allow moisture to pass through, but releases steam;
  • goes well with surfaces made of shell rock and coarse-grained concrete;
  • can be applied to insulation made of mineral wool and expanded polystyrene;
  • dirt and dust are washed off with water without additional means.

  • primer and paint are additionally used when finishing walls;
  • low elasticity of the coating;
  • the pigment quickly fades in sunlight.

Siloxane

Silicone and siloxane are not synonymous, despite their similar names. The second is a distinct functional group, and the first is a stand-alone polymer material. Such solutions have a higher acrylic content in their composition. Silica’s primary function is to create a waterproof coating while the final layer dries. Moisture cannot penetrate the full thickness of an application made of silicone coating; it can only do so near the edge.

After five to six years, the protective film completely degrades due to the sun’s rays and loses its properties. After that, the coating rapidly loses its usability due to weather and climate changes. Consequently, the primary drawback of this kind of material is its brief lifespan.

Polymer-cement composition

Plaster made of polymer and cement is one of several intricate and multi-component building mixtures. The strength, elasticity, resistance to mechanical and vibration effects, and adhesion to other materials of the coating could all be increased by incorporating polymer fibers into the composition.

Compared to cement, the elasticity of the solution is nearly ten times lower. Polymers make it easier to apply the mixture, but as they get stronger, they cause more shrinkage. There are no visible cracks. Because the layer is thin, restoration work, joint decoration, chip and crack removal, and other tasks require cement-polymer plaster.

The material cannot be made by you. The blend is offered without moisture. The package contains instructions on how to prepare the solution and consume it.

The coating’s performance characteristics may be adversely affected if the recommended proportions are not followed. Since the plaster is not kept in its completed state, it is diluted right before application.

Main characteristics

  • vapor permeability and moisture resistance provide protection from water, but do not interfere with natural ventilation of the room;
  • resistance to frost, sudden temperature changes and other weather conditions;
  • long service life;
  • high adhesion to other materials;
  • impact protection.

The finished product is offered for sale as a ready-made solution and as a dry mix. The plaster preparation and application techniques are specified on the packaging by the manufacturer. It is not advised to stray from the guidelines. The durability of the coating is decreased by technological violations.

Tool

  • rags;
  • masking tape;
  • several containers for preparing the solution;
  • trowel;
  • level;
  • construction mixer;
  • spatula;
  • personal protective equipment.

Because polymer plaster is flexible, long-lasting, and simple to apply, it’s a great option for both exterior and interior projects, including facades. It provides excellent protection against moisture and weather damage, sticks well to a variety of surfaces, and is not easily cracked. Polymer plaster is an aesthetically pleasing and long-lasting material that can withstand daily wear and weathering, making it ideal for both finishing touches on new construction and home renovations.

Technology of applying polymer plaster

The ideal temperature range for plastering is +5–+30°C. Walls need to be shielded from the sun, wind, and precipitation. The maximum percentage of humidity in the air is 75%. The decorative qualities of the chosen material determine the application technology. Prior to beginning work, the surface is leveled and primed. After that, a trowel is used to apply an even base layer. The filler’s size determines its thickness. The coating will be thicker the higher the fraction.

Use a spatula to apply a second layer after the base has slightly dried to achieve the desired decorative effect. Finishing, like varnishing, is only done when the technology demands it. Most of the time, it is not required.

How to prepare the solution

The final composition just needs to be mixed before applying. The majority of the time, adding water to it will break the polymer bonds, causing the material to wear down faster than the manufacturer says. However, you can dilute the mixture with liquid (no more than 10% of the solution’s total volume) if it is too thick and difficult to apply.

In the event that the plaster was purchased dry, it needs to be diluted per the directions. A measurement error may have a detrimental effect on the coating’s quality. To create a crystalline network, dry powder is combined with liquid until a homogenous mass is achieved, then the mixture is left for 15 to 20 minutes. The mixture needs to be re-mixed after that.

How to prepare the surface

For interior work, polymer plaster is only used on the wall that has been prepared. The prior coating (wallpaper, varnish, paint, etc.) is removed from the surface before finishing. d.), sew reinforcement mesh to wooden panels, and embroider brick joints. Cement mortar is used to fill in chips and fractures.

Special techniques are used to treat rust, mold, fungus, and grease stains; dust is eliminated. The wall is then primed, and it is given a full day to dry.

Applying plaster yourself

Using a spatula, decorative plaster is applied. Depending on the area being processed, a width is chosen. Experts advise selecting instruments that are easy to use and comfortable to hold in your hands. A thin coating of the solution is applied. The fraction of components usually doesn’t go above 4-5 mm. The likelihood that the coating will eventually start to exfoliate decreases with layer thickness.

Care for fresh coating

Strict adherence to facade polymer plaster application technology is required for the material to last the number of years specified by the manufacturer. New finishes need to be shielded from the sun and drafts. These elements will cause drying to occur too quickly, which will lead to significant shrinkage. Chips and cracks may result from this. The coating will have an uneven color with stains and streaks if the layer dries unevenly.

You must make sure that during the first day following application, moisture does not come into contact with the facade finishing work. The plaster layer may be washed away by rain, shortening its lifespan. It is advised to take preventive action, such as covering the walls along the scaffolding fence with film or another special material, to protect the coating from harmful climatic influences.

It’s crucial to keep in mind that the composition will take longer to solidify at higher humidity levels. This needs to be considered when scheduling additional finishing work.

Advantages Disadvantages
Durable and long-lasting Can be more expensive than traditional plaster
Resistant to cracking Requires skilled application
Water-resistant Limited color options
Good for both indoor and outdoor use May need special primers or bonding agents

One particularly adaptable and strong material for interior and outdoor use is polymer plaster. Because of its flexibility, it can withstand a wide range of weather conditions, which makes it perfect for facades. Its resilience to cracking also guarantees longevity and lessens the need for regular repairs.

Polymer plaster is a smooth and even finish for interior work that improves any space’s visual appeal. Both professionals and homeowners will find it to be a practical option due to its rapid drying time and ease of application. The plaster’s adaptability is further enhanced by its strong adhesion to a variety of surfaces.

All things considered, polymer plaster has several advantages that make it the material of choice for a lot of building and remodeling projects. Its increasing industry popularity can be attributed to its robustness, adaptability, and simplicity of use. Polymer plaster yields consistent and long-lasting results for both exterior and interior walls.

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Andrey Ivanov

Experienced civil engineer with more than 20 years of experience. Specializing in the construction of industrial and civil facilities. Author of many publications in professional journals.

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