Soundproofing partitions: methods and materials. We increase the comfort of living: sound insulation of interior partitions What is the best sound insulation in a partition

In addition to significant loads on interfloor floors, laying brick walls is associated with serious time costs and requires professional skills.

If you want to create, then an imitation for a brick niche can be created by finishing a block or frame structure with brick tiles. Corner elements of artificial stone will allow you to achieve a complete illusion of the thickness of brickwork or natural stone.

Concrete

Suitable for construction with a density of 600–800 kg / m³, a thickness of 80–100 mm. The thinner thickness is not sufficient in terms of sound insulation and resistance to cantilever loads. However, the walls of foam blocks require plastering. For this reason, it will be difficult to create a small decorative niche, since you will have to saw off blocks to size, plaster the surfaces.

Expanded clay concrete partition blocks are moisture resistant and durable, but do not differ in the stability of geometric dimensions. Such laying is done only by professionals, and in any case, the surfaces will have to be leveled with rather thick plaster layers.

From tongue-and-groove gypsum boards

Gypsum tongue-and-groove plates are larger than foam blocks, but decorative niches can be created with them. Due to the groove-tongue connection, the structures are stable. They do not need reinforcement, only anchoring to the walls and reinforcing the corners with plaster corners made of galvanized steel. The downside of the material is that it is difficult to saw. Therefore, when fitting in size, it is necessary to remove grooves and ridges, and then reinforce the masonry with reinforcing bars or plates. But the walls of foam blocks let in steam, that is, they breathe. Moreover, gypsum contains water and acts as a humidity regulator in rooms with normal humidity.

Tongue gypsum slabs weigh significantly more than concrete blocks, therefore they are suitable only for houses whose floors are designed for a distributed load of more than 800 kg / m2.

Another disadvantage is high elasticity. Because of it, a drum effect appears - a relatively low level of sound insulation at frequencies of 100-200 Hz.

Partitions with a pocket for a sliding door are usually made of plasterboard. It can be based on a factory pencil case made of special section profiles. The design provides the ability to adjust the blade height.

Porous ceramic

Porous ceramic blocks are 2–2.5 times lighter than bricks and at the same time hold fasteners well. If you use chemical anchors, then even suspended plumbing can be mounted on a 130 mm thick wall.

The large format of the blocks accelerates the laying, grooves and ridges on the side ends strengthen the partition, and the ribbed surface provides a reliable adhesion to the plaster layer.

The disadvantages of porous blocks include a relatively high water absorption. This problem can be solved by using a water-repellent primer and cement plaster.

Plasterboard

Practically does not load the floor, does not require time-consuming and allows you to secretly lay wires and pipes without problems.

In recent years, instead of the usual fastening with self-tapping screws, punching is more often used: with a special tool resembling pliers, a hole is made with bent edges in two contacting walls of the profiles. Fixation with a cutter speeds up the installation, moreover, there are no protruding screw heads on the frame, and the drywall sheet falls on it perfectly evenly. However, when fastening with a cutter, it is more difficult to correct mistakes, moreover, it is less durable, therefore it is important to observe the required pitch of the screws - 250 mm.

Redevelopment Legal Notice

With the housing inspection authorities. If the design calculation shows an increase in the load on the floor, then it will be difficult to obtain permission, since the technical opinion of the house designer will be required.

1. Redevelopment that affects load-bearing walls or unloading non-load-bearing partitions can only be started after obtaining permission from the housing inspection authorities.
2. When redeveloping, it is impossible to increase the load on the floors in excess of the permissible for the project (calculation by bearing capacity, by deformations).
3. It is difficult to agree on replacing the partition with a heavier one.
4. They will not allow redevelopment in which your bathroom will be above the kitchen or living room of the apartment below. This rule also works for the arrangement of apartments in monolithic new buildings, where new walls of wet zones are erected according to the floor plan.

How to avoid mistakes during installation

A common mistake when arranging interior partitions is their incorrect location. The owner of the apartment may incorrectly estimate the dimensions of the premises (for example, a dressing room), the architect may not understand the wishes of the customer, the foreman may misread the plan, the workers may see the “wrong mark”. The wall has to be dismantled and rebuilt, wasting time and increasing costs. Therefore, the owner of the apartment, together with the architect (designer), is highly desirable, armed with a plan and a tape measure, to come to the object in order to control the laying of the first rows.

In this manual, we will tell you in detail how to make noise insulation of an interior partition and what materials are needed for this.

When redeveloping offices or apartments, homeowners often need reliable soundproofing of interior partitions. In the case of offices, when it is assumed that it is necessary to separate meeting rooms, or offices of departments, managers. In apartment renovation, if you need to distinguish between noisy rooms (living room, kitchen) from the bedroom or nursery. Most often today, soundproof partitions are made in two ways:

• install a wall of massive building materials (tongue-and-groove blocks, foam concrete, brick) and then sheathe it with soundproofing;
• immediately mount the frame structure, sheathed with plasterboard, filled with mineral fiber plates.

The second method is preferable because it allows you to get the job done faster and at lower cost.

Choosing the type and characteristics of the interior partition with sound insulation

The ability of building structures made of various materials to resist noise is determined by the noise insulation index Rw, measured in dB. It shows how much noise will weaken when passing a particular obstacle. Which interior partitions are better for sound insulation can be determined from the table:

As you can see, the best sound insulation is for interior partitions made of a metal profile frame filled with fibrous mineral plates and sheathed with plasterboard. At the same time, the Rw of such structures can be increased to 70 or more dB by increasing the thickness of the noise-absorbing layer and using additional high-density materials (membranes, quartz panels) in the cladding.

Calculation of the design of a soundproof interior partition

The noise level in an apartment can reach the following values:

• loud conversation - about 60 dB;
• dog barking, human cry - up to 75 dB;
• audio or video equipment switched on at maximum volume - up to 100 dB.

It is obvious that the interior walls of brick, foam concrete or gypsum blocks alone cannot serve as reliable protection against noise. Even if you make them twice as thick as indicated in the table, this will not save the situation, since, according to the law of doubling the mass, the increase in the noise insulation index in this case will be only 6 dB. Thus, if you already have such a partition, then in order to increase its Rw, you will need to install an additional sound-insulating frame system on it.

The specific parameters of the soundproof partition should be determined based on the noise level from which it must protect. If it does not exceed 75 dB, then a standard "pie" consisting of two layers of gypsum board and 50 mm of mineral wool with a density of 40 kg / m3 between them will be sufficient.

Those who want to ensure maximum protection of the adjacent room from noise should stop at a reinforced structure. As a rule, the layer of mineral filler in them is increased by 50 or even 100%. In addition, the cladding on each side can be a sandwich (quartz panel + GCR) or even a triplex (GCR + membrane + GCR). With such soundproofing of partitions in the apartment, you can safely turn on the home theater in the living room at full volume and be sure that the child's sleep in the next room will not be disturbed.

Installation of soundproof partitions in the apartment

Installation of the partition frame

The best material for the frame of soundproof partitions is a galvanized metal profile. It is not affected by changes in humidity, like a wooden bar, and its strength remains stable throughout its entire service life.

The frame is installed in the following sequence:

Fiber filling

This stage requires special attention. To achieve maximum sound insulation of the partition, the material must be laid evenly, tightly, without voids, crevices and gaps.

Installation of massive cladding

The sound-absorbing layer is not able to completely dissipate sound waves at once. To prevent their penetration through the interior noise-insulating partitions, it is necessary to cover the structure with massive high-density materials. The purpose of the cladding is to reflect the remaining sound wave back into the depth of the fiber filler layer for its complete absorption.

The table below, which contains the characteristics of the most commonly used materials, will help to make the choice.

Installation sequence:

The level of sound insulation of frame partitions directly depends on the quality of the massive cladding. Any crack or loose joint is a sound bridging that significantly reduces the Rw index. As a rule, the material with the maximum density (gypsum fiber board or sand panel) is mounted as the first layer of massive sound insulation of the partition. The exception is constructions in which a membrane is used to enhance the sound-reflecting properties, which is located between the sheets of HV and HA.

In most apartments, interior walls are erected from tongue-and-groove, foam concrete or cinder blocks - materials that are extremely unsuccessful in terms of sound insulation.

Why are these materials chosen for interior partitions? The thing is that it is convenient for builders to erect such walls, and they are erected quite quickly: in a couple of days you can erect all the walls, and then make good money on their plaster. The low sound insulation of such walls and their high ability to transmit noise from the adjacent apartments of the workers, as a rule, do not care, since they will not then live in the apartment being renovated. "Nothing personal is business!"

What is the best way to build interior partitions for better sound insulation?

Partitions are single-layer and multi-layer. Single-layer - these are walls made of blocks, and multilayer - frame-sheathing structures, for example, from plasterboard. If we talk about partitions made of homogeneous materials, then only materials with such as: solid red brick, expanded clay concrete blocks will provide high noise insulation.

Expanded clay concrete blocks covered with sand are used for interior walls in recording studios

Noise insulation of a brick partition

Partitions made of red solid bricks will have good sound insulation (hollow or silicate bricks are not suitable). Red brick has a high surface density and good internal losses.

The wall should be thick half brick (not a quarter) and must be plastered on both sides (total thickness ~ 140 mm). It is important not to save on cement mortar.

Building regulations prohibit the construction of brick walls in apartments

We could assume that we have found a suitable material, if not for one moment that makes it impossible to use solid bricks in apartments! Current building codes prohibit brick partitions in apartment buildings - the floors are simply not designed for such a load!

Sound insulation of interior walls made of other materials

The rest of the building materials, passing by weight, have low sound insulation and do not provide standard values.

For example, the density of tongue-and-groove blocks (gypsum) is 1100 kg / m 3. The calculated sound insulation of a partition made of a plaster groove with a standard thickness of 80 mm is ΔR w \u003d 40 dB.

Sound insulation of walls made of foam concrete or aerated concrete blocks has even weaker sound insulation than walls made of tongue and groove. The density of D400 aerated concrete is only 400 kg / m 3, i.e. even less than a tongue-and-groove! A wall made of foam concrete 100 mm thick has an insulation index of only ΔR w \u003d 37 dB.

Low noise insulation of such walls is also caused by undesirable resonance phenomena in the range of 500-800 Hz (middle of the speech frequency range), which significantly reduce the sound insulation of household noise.

Indirect noise transmission to block walls

Another unpleasant feature of tongue-and-groove walls or porous concrete is their strong re-emission of noise from the lower and upper neighbors. Due to the low weight of such walls, sounds from massive floors are very well transmitted to them. In addition, gypsum plaster has very low internal losses (as a test, you can knock on the plaster wall and feel its "sonorous"), which also enhances the re-emission of structural noise.

Subjectively, after dismantling all internal walls, the noise level is approximately halved!

Installation of interior walls from blocks cannot be performed without rigid connections with the existing structures of the house, therefore, it will not be possible to completely exclude the transmission of vibrations to them.

A noticeable reduction in noise can be obtained if the partitions are not brought to the ceiling overlap by 10-20 mm. Fill the gap with mineral wool or other damper and seal the joint. Such a measure will reduce the transmission of noise from above to the partitions.

An example of a vibration-insulated junction of a partition to a ceiling.

In no case should you use polyurethane foam, which is very light and has a closed cell structure, therefore it has neither reflective nor absorbing properties. At the same time, the foam is acoustically rigid and perfectly transmitting vibrations.

Noise insulation of interior walls from a groove (or aerated concrete) is insufficient. Such partitions often have to be additionally soundproofed.

The main function of partitions is to divide the interior space of the house into separate rooms that differ in their purpose: living room, study, bedrooms, library, kitchen, bathroom, toilet, etc. When constructing them, it is imperative to take into account the ability of structures to reduce the intensity of sound waves.

In rooms with a high noise level, the installation of additional partitions is designed to create a comfortable acoustic environment in the interior by capturing external sounds. The enclosures of soundproof partitions are designed in such a way that they can:

• to reduce noise, the source of which is the operating equipment;
• absorb extraneous sounds;
• share noises.

Types of soundproof partitions

The concept of "sound insulation" includes a whole range of measures, the purpose of which is to reduce the noise level in an apartment (house).

The main types of partitions to protect against extraneous sounds are:

Materials required for work

The device with soundproofing qualities of a frame partition is a fairly easy task. With certain knowledge, it is quite possible to cope with it on your own.

For work you need:

• frame materials: aluminum-based profiles or wooden bars;
• material with sound insulating properties (mineral wool is quite suitable);
• drywall used to hold insulation inside the frame.

Self-contained soundproofing device

To obtain a high-quality soundproofing structure, you must consistently perform the following steps:

1. Carry out a markup of the exact location of the planned partition. The first step is to mark the position of the parts on the floor: profiles, doorway, pillars. After that, the indicated dimensions can be transferred to the surface of the ceiling and walls.
2. With the help of dowels, the guide profiles are attached to the ceiling, floor, walls. The size of the step of fixing the dowels should be approximately 40 cm. A polyurethane tape is glued to the lower part of the surface of the guide profile, after which the racks of the partition frame are installed.
3. Prepared drywall sheets are attached to one side. Fastening is carried out in one or two layers using self-tapping screws. Soundproof mats are cut.
4. Fragments of mats are installed in the space of the partition wall, then the edges of the cut mats on one side are inserted into the inner part of the U-shaped profile, and on the other side an elastic moment of the stop is created.
5. Communication elements (wires, sockets, cables) are placed inside the structure, after which the plasterboard sheets are installed on the other side.
6. The final stage is finishing work.

Soundproof materials

In accordance with the function performed, the materials used for sound insulation are divided into sound-reflecting and sound-absorbing.

Solid materials have the property of reflecting sound: brick, concrete, metal sheets, drywall.

Materials with a cellular, granular or fibrous structure are capable of absorbing sound waves. They are produced on the basis of mineral wool or glass wool. Specialty stores sell materials for sound insulation and sound reflection. Today's construction market offers them in the form of rolls and slabs. They all differ in terms of the reflection or absorption of sound waves. Many samples may contain special components to improve sound insulation properties. You can also purchase mats that have a multilayer structure: in them, sheets of foil are located between the layers of mineral wool.

Before purchasing, you must familiarize yourself with the parameters specified by the manufacturer.

How to calculate the level of sound insulation

The calculation is based on the sound insulation standards of the room. To determine the level of sound insulation of the partition in the case of using a specific material, you can use the following formula:

IB (sound insulation index) \u003d 32 (logM) + 2 (logD) - 17 dB.

M stands for the surface density of the wall material, and D stands for the thickness of the air gap.

There is an easier way: use calculator programs posted on thematic sites. In this case, the calculations are made automatically and will be more accurate.

Features of noise insulation of interior partitions

Plasterboard constructions

In this case, the main prerequisite for sound insulation is filling the inner space of the partition with a special material. Before starting the installation, it is necessary to calculate the number of plasterboard layers that need to be fixed on each side. With a double layer, a significant improvement in sound reflecting properties can be achieved. If aluminum-based guides are used, a spacer must be placed between the metal surface and the wall to prevent the transmission of sound vibrations. As fillers for interior partitions, fillers with sound insulating properties are used: mineral wool or glass wool.

Inter-apartment partitions

To improve the soundproofing properties of such partitions, additional structures must be installed. An air chamber should be arranged in the space between the walls and the structure. The gap remaining between the floor and the structure is filled with elastic soundproofing gaskets.

Sliding partitions

The main task in their isolation is to reduce the gaps between the sections of the structure, the ceiling and the floor to a minimum. For this purpose, a special method of securing the sections from the top is used. The lower end must be carefully lapped to the floor without creating a gap. Soundproofing material is placed in the inner part of the partition. As a result of the sliding of the sections to obtain a single whole, tight adhesion of the edges of the individual sections to each other should be ensured.

An important stage in arranging a quiet, full-fledged room is sound insulation of interior partitions. If there are kids at home and you want to create a cozy corner for them, protected from loud sounds and neighbors, you must definitely install a noise-absorbing structure.

If you are unsure of what is the best soundproofing for your room dividers, contact Revecon. We are engaged in the manufacture of structures of any complexity and their installation to order. All work and products are guaranteed.

Our product catalog - we work in Moscow and the Moscow region

Purpose of systems with sound insulation

Interior partitions without appropriate placeholders will not be able to guarantee noise protection. Cases of structures with noise reduction function are designed to:

• Hold up loud sounds;
• Reduce vibration from noise;
• Minimize sound from household appliances.

Soundproofing - a range of measures to reduce the intensity of noise in the premises of an apartment, private home ownership or entertainment facility.

Types of structures protecting against extraneous sounds

Revecon offers a variety of interior systems that can provide excellent protection against neighbors and unwanted vibrations.

Types of partitions for apartments and cottages:

When arranging noise damping walls, Revecon engineers use high-quality sound-absorbing and sound-insulating materials. Only in this way can an adequate level of protection against extraneous vibrations be ensured.

Soundproofing material selection

The use of drywall, which has special characteristics, will reduce the noise level that penetrates through interior structures.

What is better for soundproofing the interior partition:

• Membranes - thin cloths supplied in rolls;
• Sound absorbing plates.

The basis of the membrane is a polymer web protected by a layer of felt particles. The thickness of the material is 2.5-12 mm, which allows the use of certain types of raw materials when arranging thin structures. The plate acts as a sound barrier, blocking the passage of waves. Felt spraying enhances protection.

As an addition to membranes or as an alternative, Revecon engineers use different materials with a porous structure that provides excellent sound absorption, which improves sound insulation performance.

Using the latest technology

Competition in the market of finishing and building materials forces manufacturers to improve the quality of their goods. For these purposes, work is carried out in the following areas:

• Arrangement of acoustic GCR;
• Use of special filler with sound-absorbing properties;
• Elastic materials under the frame, reducing sounds from mechanical stress;
• Filling structures and arranging false panels;
• Cellulose fillers inside the system.

Thanks to modern technology, the use of high-quality materials, Revecon produces partitions of any complexity with varying degrees of noise reduction.

Soundproofing interior panels: instructions

To assemble a high-quality partition that provides reliable protection against noise having experience, qualification can be done without difficulty. To do this, you will need wooden bars or aluminum profiles, mineral aggregate and a material that prevents the penetration of waves through the frame - GCR.

How to make a soundproofing of an interior partition:

• Mark the future design on the surface of the flooring, then the ceiling and walls.
• Fix profiles with dowels (every 40 cm). To guide the guides with a polyurethane tape. Install the skeleton uprights.
• On the one hand, using self-tapping screws, fix the GCR, in one or more layers. Cut sound-absorbing mats.
• Set prepared membranes inside the system at a risk. Bring the edges into the space of the U-shaped aluminum profile on the one hand, and emphasize on the other.
• Inside the partition to place communications - wires, sockets, cables. Fix GCR on the other hand.

At the final stage, Revecon engineers perform finishing work taking into account the characteristics of the interior panel, the characteristics of the room and the wishes of the customer.

Possible mistakes when creating sound insulation

To ensure the proper quality of noise reduction, Revecon masters do not recommend finishing the room with exclusively sound-absorbing plates, arranging noisy equipment anywhere in the building, constructing the walls of their 3-layer drywall with filler.

Sound insulation can only be created using the system "mass-elasticity-mass", with a minimum thickness of 40-50 mm.

If you need to properly equip the sound insulation of interior partitions, contact Revecon. Wizards will take measurements and prepare a design of any complexity, taking into account all your wishes.