Interior doors are needed in order to delimit the space, but they must also prevent the penetration of excess noise. Rooms such as children's rooms, bedrooms, music rooms, workshops require doors with good sound insulation. In this article, you will learn how to choose soundproof doors, taking into account customer reviews.

Structural features of doors for sound insulation

Interior doors with increased sound insulation are made of fiberboard, plastic, metal or glass. made of wood and its analogues, and sliding - plastic or metal. But the latter have the lowest sound insulation properties. Models made using panel technology have poor sound insulation performance, when the frame is sheathed with MDF or chipboard panels, because. inside such a "sandwich" a resonating space is created. But old models were made in this way, modern panel doors have a cardboard partition made according to the honeycomb principle. They are more resilient than wood, so they transmit less sound.

Attention! Doors, which are subject to increased requirements for sound absorption, are made of solid wood.

Glass or mirror inserts also impair sound insulation. Experts advise making the glazing area up to 20%. V otherwise it is necessary to do double, and preferably triple inserts.
Hardwood paneled doors reduce noise levels by up to 20 dB.

Advice! The more massive and heavier the door, the worse it transmits sound.

Good sound insulation is achieved when the distance between the door frame and the leaf is minimal. According to this principle, doors with a double porch are designed, along the edge of which there is a protruding groove with a polymer seal, which allows it to be pressed tightly against the frame without leaving gaps.

Many companies offer custom-made doors using special technology. Visually, they do not differ from conventional interior counterparts, but inside they consist of layers of sound insulator and chipboard glued together.

Provides good noise protection plastic doors with a multi-chamber layer of double-glazed windows. How more quantity cameras, the less sound enters the room. Such doors are often installed in offices or public places, but they can also be installed in an apartment, choosing the right interior.

Attention! To further enhance the effect of sound insulation, purchase a special metal box, filled with concrete or foam from the inside, as a set for the doors. It provides a minimum gap with the door frame, less than 1 mm.

Fillers for noise insulation

When choosing doors, pay attention to soundproofing material. The most effective are the following:

• corrugated cardboard with a layer in the form of honeycombs - cheap material, but after some time it loses its structure, forming cracks, due to which the sound insulation deteriorates;
• basalt mineral wool- does not burn, but gradually settles and then voids appear that let the noise through;

• polystyrene - has good sound-absorbing properties, but is fire hazardous, while toxic gas is released that is dangerous to human life;
• polyurethane foam is a low-combustible material that tightly covers all voids, preventing sound from penetrating.

Additional methods of soundproofing

The presence of thresholds in the door provides additional heat and sound insulation, but it is inconvenient to step over them if there are elderly people or small children in the house. However, for this, “hidden” structures are installed:

1. A flexible sill made of rubber reduces the gap between the floor and the door leaf, provides easy closing / opening of the door.
2. - this is a sealant that is attached to the door leaf, when the door is opened it rises, and when it is closed it falls, leaving no gaps. In addition, such a system protects the room from drafts.

You can also "finish" the old doors. To do this, you just need to sheathe them with a layer of sound insulator, according to the following scheme:

• We close up all the cracks with sealants between the wall and the door frame.
• We glue with special mastic soundproof material, at both sides.
• We decorate the door with leatherette, hammering it with carnations along all sides.
• We close the gap between the frame and the door leaf, pasting it around the perimeter with a sealant.
• We set a flexible or “smart” threshold.

In conclusion, I would like to add that the installation of only soundproof doors will not completely eliminate extraneous noise. It is necessary to approach comprehensively: to insulate walls, ceilings, floor covering, install plastic double-glazed windows.

Noise isolation of an interior door: video

Interior doors with sound insulation: photo

Interior doors, as the name implies, are designed to separate rooms from each other, to delimit space. However, in addition to aesthetics, they must provide sufficient sound insulation.

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On the picture:

If extraneous noise from the street prevents you from concentrating, you may need to replace the balcony door with a model with increased sound insulation.

Comfortable for a person the volume is considered to be 30-50 dB, large indicators are annoying. The task of windows and doors is to keep a comfortable noise level in the room, not to let loud sounds into the room.

The soundproofing of doors is regulated by several normative documents: GOST 26602.3-99 “Window and door blocks. Method for determining sound insulation "; SNiP II-12-77 "Protection from noise"; SNiP 2.08.01-89 "Residential buildings". Yes, in living rooms apartments, the noise level should be no more than 30 decibels (dB), and, for example, in the trading floors of shops and airport waiting rooms - no more than 60 dB.

Door classification

Different types of doors provide different sound insulation. Worst of all, they dampen external noise plastic. Low and soundproofing properties doors operating on the principle of roller shutters, which consist of a set of aluminum (rarely wooden or plastic) rails.

Folding interior doors provide perhaps the least possible soundproofing.

The sound absorption of panel doors largely depends on their design. Made according to old technologies (frame made of wooden slats, sheathed sheet materials similar to fiberboard or MDF) do not absorb sounds well, as they have many voids. In some cases, the noise is even amplified (resonator effect).

Total soundproofing. It is not necessary to install soundproof doors in all rooms. Choose exactly those parts of the room where you really need to protect yourself from noise: a bedroom, a children's room, an office, a music studio...

In the photo: Filorei 45 rovere-wenge door from the Garofoli factory.

Modern technologies for the manufacture of panel doors involve filling the internal volume with cardboard laid like a honeycomb - we get doors with best soundproofing. Compared to wood, cardboard itself is less resilient and less prone to sound transmission.

If you plan to use aluminum profile doors, you should remember about its high sound conductivity. But it occupies about 10-15% of the door area, so the contribution of the profile itself to the soundproofing properties of the door is small. The filling is more important. If this is a single glass, the achieved sound insulation of the doors will be very low. Another thing is a double-glazed window (two, three or more glasses located in a “sandwich” with air gaps between them) or a sandwich panel, which consists of foamed material (polystyrene, expanded polystyrene, etc.) lined with plastic. The indicators of a single-chamber double-glazed window (from 2 glasses) and a sandwich panel are quite high, and a double-chamber (from 3 glasses) are almost ideal for most rooms in the house.

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On the picture:

Soundproofing sliding doors below the hinged ones, if only because of the gap that inevitably exists between the sliding canvases.

Solid hardwoods have good performance. After all, other things being equal, the heavier the door, the better protection from noise it provides. However, in any case, the sound insulation of interior doors is not high: the existing noise level is reduced by 10-20 dB.

It is very effective to use double doors. Canvas with outside has protruding edges (folds, or "overlay"), which are additionally pressed against the plane of the box, most often in combination with a polymer seal.

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On the picture:

Massive paneled doors have good level soundproofing.

Two doors. An interior door with enhanced soundproofing properties can be too expensive. Or, in its appearance, stand out from the general interior design. In this case, it is recommended to install two standard doors with a small air gap between them. The air also acts as a sound insulator.

In the photo: Puerta-3 door from the Pico Muebles factory.

Noise protection

If you need to set up a recording studio at home (which requires silence) or, on the contrary, you like to play on musical instruments and do not want to disturb the neighbors, you will have to pay attention to special doors. Look for the marking according to SNiP II-12-77 "Noise Protection". He specifically stipulates that specialized soundproof doors must absorb at least 26 dB (for example, from the outside the noise level is 50 dB, and inside the room - no more than 24 dB).
Such doors look no different from ordinary ones. The finish of the canvas can be any. Special properties are achieved through internal device resembling a layer cake. The canvas is glued from fiberboard, chipboard or MDF with interlayers of mineral wool and sound-absorbing plastic. Number of layers in doors different manufacturers may vary. This technology allows you to reduce the noise level by 27-42 dB. In addition to the special design of the leaf, these doors are equipped with special boxes with thresholds.

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On the picture:

Examples of interior doors on a metal box.

There are two types of soundproof boxes: metal and chipboard. They are made in the form of a hollow profile, and to reduce the penetration of sound they are filled with concrete (for metal box) or mounting foam.

The smaller the gap between the leaf and the door frame, the better. According to the rules, its value should be no more than 1 cm. To prevent sounds from penetrating through the cracks along the perimeter of the web, use a seal - a rubber profile hollow cord, similar to that used for plastic windows. It also improves thermal insulation.

Make sure that the canvas fits snugly against the platbands: any gap is a loss in the soundproofing properties of the door.

To reduce the noise level, a threshold is installed from under the door. In addition to the usual wooden, plastic and metal, there are special heat and sound insulating thresholds made of combined materials, supplemented with a brush seal. The threshold must be at the door of bathrooms, bathrooms (these are requirements not only for sound, but also for waterproofing the room). In all other cases, if you do not want to stumble on it, you can limit yourself to installing an inconspicuous brush seal in the lower end of the door.

Do-it-yourself soundproofing

You can “finish” an ordinary door by sheathing it on one or both sides with appropriate acoustic materials: fabric-based upholstery, natural or artificial leather, leatherette, vinyl leather in combination with soft filler (batting, synthetic winterizer, foam rubber). To increase the fire resistance of the door, it is recommended to use mineral wool as a filling. To improve sound absorption will help and simple door trim with a wooden lath.

Do not forget about the possibility of installing two doors in series one after the other. Two of the most common models will give a greater effect than one special soundproof door.

Remember that just installing the right door and frame will not solve soundproofing problems. A set of measures should be taken to isolate the entire room: ceiling, walls, floor, windows.

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The quality of sound absorption or sound insulation of doors is influenced by two factors:

• material of manufacture;
• construction type.

The soundproof interior door has a special absorber inside the structure. It is important that there are no voids inside the canvas that have a resonating effect. In addition, it is equipped with special seals, which allows it to fit snugly against the floor and the door frame. It is due to this that the noise remains inside the room.

Door leaf materials

Today you can find soundproofing models from various materials:

• plastic;
• natural solid wood;

Models from natural wood. They look massive and by themselves prevent the spread of sounds. Plastic doors show themselves worst of all in this regard. The exception is doors with multi-chamber double-glazed windows.

Also, do not expect that MDF or chipboard doors will cope with the task. They will not be able to absorb sounds with high quality, therefore, responsible manufacturers offer only solid wood canvases as soundproofing ones.

Of great importance are internal fillers. They are used as:

• foam rubber;
• batting;
• mineral wool;
• corrugated cardboard;
• Styrofoam;
• foamed polyurethane.

As an element of protection, a special protective film. Among the listed fillers, it is polyurethane foam that is considered the safest. Mineral wool becomes caked over time, corrugated cardboard with cells in the form of honeycombs will also lose its basic properties after two or three years.

Styrofoam is a material that is dangerous to humans in case of fire.

About seals

Anyone who decides to purchase such a door needs to know that on the market you can find both a model with good sound insulation and excellent. It is important to learn to distinguish between them.

Outwardly, such products are no different from ordinary ones. Noise absorption is carried out not only due to the canvas made in a special way, but also due to seals. It is important that the distance between the frame and the door leaf is minimal. Each side of the box is additionally equipped with a seal.

Do not forget about the threshold. When installing a soundproof model, it is required. By the way, this element is not always convenient for households. There are two ways to make the threshold optimal in use:

• the “smart threshold” system is a seal at the bottom of the door, which rises when opened without interfering with movement, and if the door is closed, it falls into place and prevents the passage of sounds;
• flexible threshold - a model made of rubber, which provides a snug fit to the canvas and does not become a serious obstacle for a person on the way to the room.

Sliding doors are difficult to make soundproof. Also, doors made of laminated chipboard with glass inserts have poor qualities.

Rating of the best soundproof doors

We present you an overview modern models with soundproofing. The rating is based on numerous customer reviews on various forums. The rating scale is ten-point.

33.23 series 3000CPL

Still 42-2

Doors of Belarus

Leonardo PF2

Ludovic-PG

Palazzo 3

Belarusian manufacturers have proven themselves well in the market. But what if the doors have already been purchased and installed, and the requirement for sound insulation appeared later? Let's talk about how to solve this problem yourself.

Do-it-yourself soundproofing of an interior door

Simple tricks are known to help isolate a room from extraneous sounds from the outside. Remember that if the walls of the room are made of drywall, the work will be in vain.

Before starting work, you should familiarize yourself with the features of soundproof doors:

• the canvas of such a model is always thick;
• it has a multilayer structure;
• profile door frame filled with foam, as a result of which it retains sounds;
• a rubber threshold will provide additional insulation.

There are quite a few options for correcting the situation. It all depends on the initial conditions of work. Consider 3 options:

1. If the door keeps external noise well, but this is not enough for you, you can paste over the canvas with a special film and install a rubber threshold, which will slightly improve the situation.
2. Seals are installed around the perimeter of the box, which will be effective when closed door. Today on sale there are seals of both domestic and foreign manufacturers. The task is to isolate the door cracks.
3. Upholster the door leaf on both sides with a leather substitute. The method is good in that the efficiency is increased by the use of soundproof gaskets. To do this, batting, mineral wool, corrugated cardboard are placed under the layer of material. What is available.

Strengthening the canvas itself is not a complicated process, there are many ideas for soundproofing. But the effect will not be complete if there are gaps.

A modern apartment is always full of sounds and noises, which can be caused by busy traffic, traffic outside the window or loud music, work household appliances. The use of soundproofing and noise-absorbing wall coverings alone is not enough, soundproof doors will need to be installed to reduce the level of discomfort. Choosing the right model is not as easy as choosing armored or insulated options. It is more difficult to evaluate the soundproofing characteristics of doors than to measure the thickness of metal or insulation, so you have to rely only on common sense and expert advice.

Requirements for the design of a soundproof door

The most common misconception about soundproof characteristics door leaf regarding the thickness and density of the material, it is believed that the most massive and heavy door leafs have the best soundproofing qualities. This is only partly true, but high material density is not the only condition for good noise absorption.

It is important that soundproof interior doors meet several additional criteria:

• The thickness of the canvas is at least 48-50 mm, thinner canvases made of pressed laminated cardboard, plastic or wood fibers do not have the necessary soundproofing qualities to reduce noise to a sound comfort level of 20-22 dB;
• The design of the door frame and the sound-proof door leaf should be provided with folds or a double porch with additional sound sealing that prevents the propagation of sound waves through slots and joints in the door frame;
• The lower edge of soundproof interior doors is always equipped with either a guillotine or brush seal. The size of the gap between the floor and the lower edge of the door leaf can reach 10-15 mm, and it is quite difficult to achieve high soundproofing characteristics without a sealant;
• The use of additional soundproof pads on door canopies and hinges. Metal conducts sound very well, so all metal fittings must be shielded.

For your information! When choosing soundproof doors it is necessary to pay attention to the noise insulation coefficient, the noise absorption standard is 30-35 dB.

The more materials with high density and elasticity are used in the design of soundproof doors, the worse things are with blocking noise and sounds. For example, the most massive, with the thickest door leaf, Entrance door made of metal does not have the best soundproofing characteristics.

Even laying a layer of mineral wool inside the frame allows you to reduce the pressure of the sound wave by a maximum of 10-12 dB, that is, twice. The reason for the low soundproofing performance is that armored and steel doors have a large number of steel ribs and lintels, which, with any layer of mineral wool, will work as a kind of sound bridge, letting noise into the room.

Manufacturers are taking a more radical step - for the manufacture of entrance soundproof doors inner space steel box was sheathed with a layer of foamed polyethylene. As a result, it is possible to improve the parameters of soundproofing protection by 12-15 dB, and when using decorative overlay from MDF, 17-20 dB can be achieved, however, with an increase in the thickness of the doors by 3-4 cm.

One of the popular ways to make soundproof doors out of ordinary doors has been known for a long time. Usual steel door or made of solid oak, it is enough to sheathe it with a dense fabric with a foam lining. In addition to improving thermal insulation, it is possible to reduce the noise threshold and achieve sound insulation characteristics at the level of dual door block.

Door frame installation method

To a large extent, the soundproofing properties of a door block with a frame and lining depend on the method of fastening.

In a radical way to improve soundproofing performance, you can install an internal wooden door thick laminate lining with corrugated paper filling. You can use any interior door with a high level of noise and sound insulation resistance.

In theory, you can even install an aluminum or plastic door of the usual type, it doesn’t matter. The characteristics of the inner web do not particularly affect the ability to withstand noise and sound.

In order to double door possessed high soundproofing characteristics, it is necessary to fulfill three conditions:

• The size of the air gap in the vestibule between the doors must be at least two thicknesses of the outer door;
• outdoor and inner door must be equipped with a soundproof seal;
• The common door frame must be installed using soundproofing materials.

Most manufacturers of entrance and interior doors complete door frames with a set of hangers and anchors. This approach simplifies the installation of the door frame, but often worsens the soundproofing characteristics of the door block.

In order for the soundproofing unit to fully withstand noise, a more modern scheme is used. Firstly, the fastening of a wooden or MDF box to the doorway is carried out using silicone plugs and plastic dowels. Secondly, before foaming the cracks, a thin strip of foil isolon is placed in the gap between the box and the wall, and the loot itself is additionally hung around the perimeter on a rubber or silicone cord. As a result, any vibrations and impact noises are absorbed at the entrance to the doorway.

Soundproof doors

One of the disadvantages common to all types soundproof doors, is the increased thickness of the wooden or cardboard web. Majority standard models with increased soundproofing characteristics are made according to the scheme with a three-layer canvas, photo.

The door blank is made from three panels of low density particle board for high sound insulation performance. The outer surface is lined with MDF and covered with a wear-resistant laminate with texture imitation valuable breeds wood. The box is made of chestnut or mahogany.

For your information! Such a canvas is called “FDB”, is produced in Belarus and, according to the manufacturer, is capable of providing very high soundproofing characteristics in the air at a level of 37 dB.

The only drawback is the high price of soundproof door blocks. The cost of one product is more than 600 EUR. High noise insulation characteristics are achieved due to light cellulose fibers and an air gap. Truth, high level sound insulation is achieved by a significant increase in weight, the weight of the door leaf with a thickness of 43 mm reaches 40 kg.

Budget models of soundproof doors

Cheaper door blocks with improved soundproofing characteristics are made according to the traditional scheme:

• The frame of the door leaf is made of pine timber;
• External facing - from MDF panels 8 mm thick;
• A honeycomb filler with a curved surface is installed inside the doors.

Honeycombs can be filled with expanded polystyrene granules, cellulose and mineral fibers. As a result, a noise-insulating sheet at a cost of about 100 EUR provides a noise reduction of 22 dB.

Imported analogues of Turkish and Polish production use granules from silicate glass and a blowing agent. Such door leafs, in addition to high soundproofing characteristics, have increased resistance to heat.

Information about the nature of the filler and noise insulation characteristics must be included in the quality certificate for the product.

Doors with special soundproofing characteristics

As interior doors increased level insulation, you can use the usual metal-plastic model with a double-glazed window. Despite the use of aluminum and plastic, materials with low soundproofing qualities, a canvas made of double glazing can provide noise reduction by 20 dB, and three-chamber by 22-25 dB.

The option of a metal-plastic interior door block is very convenient for rooms with a high sound and temperature load. It could be doorway to the balcony, outdoor terrace or exit to the corridor.

For special cases, when the noise level exceeds 50-60 dB, experts recommend ordering the manufacture of a door leaf for doors according to individual project. Doors with high noise protection are made with the laying of three or four layers of rolled sound insulator. For example, it can be a soundproofing mat based on pressed silicon fiber. The noise insulation level is 45 dB, resistance to an open flame front is up to 20 minutes. The material does not cake and does not lose its characteristics for 20 years of operation.

Conclusion

One of the most effective ways to ensure a high soundproofing characteristic, it is considered to install a hinged panel made of foam materials on the door leaf. Thin, only 5 mm material is able to improve the insulation of a conventional interior unit by 40%. Porous rubber is finished with a PVC film with the texture of wood, plastic or any other format, as a result appearance of the door block practically does not change, and the resistance to noise is enhanced.

Interior doors are both a way to fence off, close a room from prying eyes, and an important decorative element interior that requires special attention.

It is also a sound barrier for a place where personal space reigns.

Thus, the modern requirements for doors inside the dwelling are as follows.

They should be:

• ergonomic (easy to use, light, pliable);
• durable (resistant to influences of a different nature, whether it be humidity, dust, mechanical damage, chemical treatment detergents and high temperature devices)
• aesthetic (stylish, beautiful);
• act as a sound barrier (have good sound insulation and noise reduction).

Unfortunately, to date, not all models of interior doors on the consumer market meet the above requirements.

Soundproofing interior doors is a matter of concern to many, however, this process is not isolated, but is included in a whole range of measures. They also imply isolation from extraneous noise and sounds by sealing the walls, ceiling and eliminating gaps between the floor and the bottom of the canvas.

That is why it is impractical to soundproof only the interior doors and this does not always bring the desired result. This paradox is connected with the fact that sometimes the materials from which the walls and ceiling are made have a greater sound conductivity than the door leaf.

And here https://vekrosta.info/lp/newlanding/ you will find reviews and a new recruiting site for the whole team.

Factor #1

Soundproofing with an interior door is possible only under certain conditions. One of them is the material from which the door leaf is made.

Interior doors can be based on:

• sheet of plastic;
• metal;
• sheets of fiberboard (pressed wood);
• wooden array;
• glass or mirror sheet.

The most negative reviews on the issue of sound protection are glass and plastic doors, as well as those that, although made of wood or fiberboard, have inserts made of such materials.

The aluminum profile also has high rate sound conductivity. Solid heavy massifs made of natural tree species, as well as lighter ones made of pressed wood, deserved the greatest popularity.

Factor #2

The second factor affecting the soundproofing and soundproofing properties of interior doors is the type of construction of the leaf itself.

There are such types of canvases:

• solid;
• hollow;
• with filler;
• with inserts.

Models based on a hollow structure are the worst protection against noise, since due to its resonant properties, sound absorption does not occur. Also low threshold noise insulation have door leafs with glass inserts that transmit sound. The best soundproof interior doors have solid wood or fiberboard panels filled with glass wool or foam.

Factor #3

What is a soundproof door

The third factor, and probably the most significant, is the type of door.

According to this classification, the following varieties are distinguished:

• swing or shield (single-leaf, double-leaf);
• folding ("accordion");
• coupe (sliding, sliding apart);
• rocking (cowboy).

The last type has nothing to do with sound insulation - it's just a tribute to fashion or a detail of the design concept. The folding type will also not provide the necessary level of protection against noise and extraneous sounds due to its lightness and material (often they are made of plastic, cardboard or thick fabric).

The level of sound absorption of sliding doors is higher than that of previous types, but lower compared to swing doors. However, this disadvantage is easily eliminated by reducing the gaps between the wall and the door leaf.

To do this, you can replace the plinth with a thin rail, install mortise carriages on top, and stick a sealant on the trim and track bar. Such measures will increase the airborne sound insulation index almost to the level of swing doors.

Differences in barriers

Soundproof and soundproof interior doors are usually distinguished from each other. The difference between them is that a soundproof interior door is installed where it is important to ensure a quiet and peaceful atmosphere, for example, in a nursery, bedroom or office.

Under radically opposite conditions, when there is a certain place in which noise and loud sounds are constantly concentrated (in a playroom, in a music room), it is necessary to install noiseless or soundproof plates that do not let them out.

Refinement of sound absorption at home

The best sound insulation of the door is achieved by filling the voids of the door leaf with special acoustic materials that absorb sound (mineral wool, foam rubber, polyurethane foam), as well as with the help of outer upholstery in dense fabric or leather.

Another step to soundproof a room can be to seal the door with slats to minimize the gap to the wall. This option is most suitable for sliding compartment models.

The option of installing two doors should also not be ruled out, which will give a greater effect than installing one specialized soundproofing array.

Summary

Summing up all the above factors, we can say that the most ideal silent interior doors will not be able to completely protect against extraneous sounds if there are plasterboard walls in the room.

And choosing among folding, sliding and hinged doors, should be guided not fashion trends, but real functionality these models, giving preference to the latter, due to their versatility and greater reliability.