Soundproof plaster: types and scope

Soundproof plaster: types and scope

One of the easiest and most effective ways to reduce noise levels in a room is to use soundproofing plaster. This material is actively used not only in office, administrative and public buildings, but also in residential premises. The types, features, advantages and disadvantages of soundproof plaster will be considered in this article..


In the modern construction market, there are many different finishing materials that have soundproofing characteristics. One of these coatings is a special type of plaster.. High quality material, when applied correctly, can absorb up to fifty percent of outdoor noise.

Unlike many types of soundproofing coatings, the plastered surface is more homogeneous and does not have joints, which provides a high level of sound absorption. When carrying out finishing work, it is worth remembering that it is not recommended to apply high-density paints and varnishes to the plaster, as well as to paste over the walls with wallpaper, otherwise the sound insulation will be at a low level. Glue and thick paint clog the pores on the surface, which degrades the noise absorption properties of the plaster.

Advantages and disadvantages

Like all types of soundproofing coatings, plaster has its pros and cons.. Consider the advantages of this material:

  • Affordable cost.
  • Before applying the mixture, the walls do not need careful preparation and leveling..
  • Ease of application. Even a beginner can cope with such a task. It is only important to follow the basic recommendations for finishing.
  • Safety of the coating for human health.

  • Rodents and insects will not be able to destroy or spoil such a coating..
  • High vapor permeability.
  • Resistant to temperature extremes and moisture. Due to these qualities, the plaster can be used in rooms with high humidity..
  • Strong and durable coating. Properly applied quality material can last more than ten years without changing its technical characteristics.

The disadvantage of the noise-insulating mixture is the need for additional wall decoration with decorative materials, which increases the financial and time costs of finishing work.


The differences between all soundproofing mixtures lie in the composition of the material. This plaster consists of:

  • base, which can be cement mortar, lime or gypsum;
  • polymers;
  • various fillers.

    Fillers are small granules no more than five millimeters in size. The following components can be used as additives:

    • porous expanded clay;
    • mineral vermiculite;
    • pumicitis.

    The quality of the plaster and its sound insulation characteristics will depend on the composition of the mixture. Sometimes a substance such as aluminum powder is used to produce the material. This component provides the coating with high porosity, which has a good effect on sound absorption properties..

    Application area

    Plaster mixes with sound insulation properties are often used in rooms with high traffic of people. In places of public catering, for example, in cafes and restaurants, it is necessary to provide a good level of noise insulation for a comfortable stay of visitors. In addition, such establishments are often located on busy streets or next to the carriageway..

    Such plaster is often used in cinemas, protecting the halls from extraneous noise that can interfere with watching a movie.. Also, this material is widely used for the decoration of the following buildings:

    • office rooms;
    • conference rooms;
    • business centers;

    • libraries and reading rooms;
    • manufacturing enterprises;
    • administrative buildings;
    • courthouse;
    • Living spaces.

    For the decoration of residential premises, gypsum sound-insulating plasters are most often used.. Such material creates a completely aesthetic coating, which does not have to be covered with a finishing decorative layer. To create a high-quality sound-absorbing coating, the plaster mixture must be applied around the entire perimeter of the room. To effectively protect the room from extraneous noise, it will be enough to form a layer of the mixture with a thickness of two and a half centimeters.

    Popular manufacturers

    In order for the finishing results to exceed all expectations when using sound-absorbing plaster, it is important to choose a high-quality mixture. Before buying, it is recommended that you familiarize yourself with the most popular manufacturers and reviews of their products..

    “PL group”

    The PL group company produces popular building mixtures under the Paladium brand. The company’s products are not inferior in quality to imported counterparts. Dry mixes are produced using modern high-tech equipment from high-quality domestic and imported components.

    Paladium soundproof plaster is made on the basis of foam glass. In addition to sound insulation functions, the mixture has thermal insulation properties. The solution is environmentally friendly and fire resistant. The plaster is suitable for both external and internal use. The mixture creates a durable and reliable coating that will last more than ten years without losing its original properties.

    Reviews of this product are mostly positive.. Buyers note the following advantages of the composition:

    • ease of application, the mixture is applied in the same way as any other leveling plaster;
    • the material is resistant to the formation of mold and mildew;
    • good resistance to moisture and temperature extremes.

    Some consumers note that if the plaster is applied incorrectly, the coating will not have good heat and sound insulation characteristics..


    The Ivsil company produces quality building materials using the most advanced technologies. At the same time, the prices for the company’s products are quite democratic. Dry building mixtures Ivsil are used both in industrial construction and for decoration of residential premises. Ivsil soundproofing plaster is made on the basis of cement, special fillers and polymers. The composition of this material was developed by the company itself and is absolutely unique.. The mixture also has excellent thermal insulation properties. The plaster contains no flammable substances, which makes the material fireproof.

    The total thickness of the applied layers of the solution can be from ten to fifty millimeters. The material does not crack even when applied in thick layers. Since Ivsil soundproof plaster belongs to the class of light mixes, this material is suitable for application on the facades of old buildings, because it does not create a large load on the walls..


    Firm “Favorit” is a large Russian manufacturer of finishing materials. The company’s dry mixes are produced under the De Luxe brand.. On the basis of the enterprise there is a research laboratory for the development of its own unique formulations and testing of finished products.

    Sound and heat insulation mixtures De Lux are intended for internal and external work. The plaster is distinguished by its high technical characteristics and low cost. The material is resistant to moisture, so it can be used in bathrooms and kitchens.

    Noise-insulating plaster is made on the basis of high-quality cement with the addition of special fillers, sand mixture and cellular glass. The finished solution is characterized by an economical consumption.

    The dry mixture is produced in a volume of twelve kilograms. The finished solution can be applied in layers from five to forty millimeters thick. The coating can be operated within the temperature range from minus fifty to plus fifty degrees Celsius.


    Knauf is a world renowned manufacturer of building materials. The company owes its popularity primarily to the high quality of all manufactured goods..

    Soundproof dry mix Knauf AkustikPutz is made on a gypsum base with the addition of mineral components. The size of the fractions in the plaster ranges from three to five millimeters. The material is absolutely safe for health, since it does not contain toxic components.

    The ready-made solution is simply spread over the surface and creates a high-strength coating. The mixture has excellent adhesion to most types of materials. The total thickness of the applied layers must be more than fifteen millimeters..

    How to apply?

    The process of applying soundproof plaster is no less important than the quality of the material itself. Due to non-compliance with the finishing technology, the resulting coating will not meet the declared characteristics and will not provide the proper level of sound insulation. The plaster mix is ​​suitable for concrete, wood and brick walls. The soundproofing solution can be applied manually or by machine..

    Preparation of the base

    Soundproofing plaster does not require perfectly flat walls for application. However, some preparatory work still needs to be done. The surface is cleaned of old coating, dirt and grease. Strong irregularities are recommended to be eliminated. If there are cracks on the base, they must be repaired with cement mortar..

    For better adhesion, it is recommended to treat the surface with a deep penetration primer. It is recommended to prime the walls in two layers. To improve the soundproofing characteristics of the coating, a metal mesh with 1×1 centimeter cells is attached to the walls.

    Preparation of the solution

    Further preparatory and finishing work must be performed at an air temperature in the range from +17 to +25 degrees and a humidity of no more than 65%. Instructions for diluting the plaster will be indicated on the packaging of the material.. For most varieties, the process looks about the same:

    • Pour the dry mixture into a clean container with a volume of thirty liters or more.
    • For one bag of dry plaster, you need to take about twelve liters of water. The exact proportions are indicated on the product packaging..
    • With the introduction of water, the solution is constantly stirred. This procedure will take about seven minutes in total. The mixture should become viscous and smooth..
    • The solution is left to infuse for ten minutes, and then mixed again.
    • The resulting mixture must be used within four hours..

    Finishing work

    The solution is applied in at least two layers. The total thickness of the coating should be approximately twenty millimeters. You can increase this figure to two and a half centimeters. Layers are applied sequentially after the previous coating has completely dried, no more than ten millimeters thick. Too thick layer may crack when dry.

    Plastering is leveled with an aluminum rule. Excess mixture can be removed with a plastering scraper. After applying the solution, the walls can be covered with water-based paints or decorative plaster mixtures.

    In the next video you will find a presentation of the heat and sound insulation plaster De Luxe TEPLOLUX.

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