How to make roof soundproofing from corrugated board or metal tiles, what materials are better to use. Is it necessary to soundproof the roof of a house made of metal? How to glue corrugated board from rain noise

Roof soundproofing is a job that will make the house as comfortable as possible. Modern roofing materials, having numerous advantages, still do not allow you to do without this stage. construction works. For example, metal roofing is easy to install, lightweight, strong enough and lasts a long time. Its aesthetic appeal and economy are also an argument in favor of choosing this material. But, well protecting the building from the effects environment, metal tile (as well as corrugated board) has low heat-insulating and sound-proofing qualities.

High-quality sound insulation of the roof of a house made of metal is especially important, since this material has high resonant properties.

Buildings for technical purposes: garages, sheds, warehouses, etc. - do not really need such roof properties. But soundproofing the roof of a residential building is an obligatory stage of work when creating roofing pies of buildings.

Construction problems

The sound insulation of a building depends not only on the choice of a particular roofing material. An important factor in ensuring silence in the house is the correct and accurate installation of coatings. The “noise effect” is noticeably enhanced if the roof resonates and rattles at the slightest increase in wind.

Construction problems that create unwanted acoustic effects:

1. When installing a metal tile, the crate is unevenly installed. In this case, the slats are selected with unequal widths, and the distance between them varies. Wider sections allow for sagging roofing. This causes a resonance effect, and the "noisiness" of the roof is seriously increased.
2. Not enough fasteners. When installing a metal tile, it is necessary to use a certain number of self-tapping screws (10 pieces per m² of material). If this is not taken into account, then when exposed to precipitation (rain, hail), the roof “sounds” stronger. It is necessary to provide a sufficient number of fastening points. The quality of installation is improved by the use of special fastening fittings for this type of metal roofing. There are self-tapping screws equipped with a neoprene seal.
3. Incorrect cutting of sheets of roofing materials. If you install sheets of metal "stretched", then it can be deformed without a serious external load. The metal is heated in the sun or supercooled, which creates the conditions for its displacement. And this leads to noise effects even without significant wind. They say about such a roof that “it is buzzing”.

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Choice of soundproofing material

The possibility of choosing the necessary means to create both a warm and a "silent" roof of the house is quite large. When choosing the materials necessary for this, it is necessary to take into account the following characteristics:

• dynamic modulus of elasticity;
• sound absorption index (IS);

FROM is indicated either on the packaging, or the material itself is marked with data on this parameter. Naturally, wanting to achieve a greater degree of sound insulation, it is necessary to choose a higher index. It is important to pay attention to these indicators, since often the material for thermal insulation during construction can also be used as noise protection. Such a polymeric material as polystyrene, although it has the property of protection from the cold, is marked with a sound absorption index of 0.3. This makes it completely unsuitable for sound insulation of the roof of the house to be sufficient in the construction of a residential building. The lower level of IZ at which one or another material can be used is 0.5. Such quality has, for example, penoplex.

Much more good choice is the use of cotton materials:

• basalt fiber - 0.9;
• mineral wool - 0.7;
• glass wool - 0.6;

Such a choice of material will not only allow you to get a decent result, but is also quite economical, since its cost is low.

Noise insulation of a roof made of metal (rolled, sheet or profiled) becomes all the more relevant, the smaller the angle of inclination of the roof slope was planned. It is easy to imagine how much louder the sound of falling drops or hailstones will be felt when it is vertical compared to sliding.

The second important parameter is the dynamic modulus of elasticity. The smaller it is, the greater the acoustic protection of the roof. For example:

• polystyrene - 0.6-1.35;
• mineral wool - 0.3-0.35;
• basalt or fiberglass - 0.05 to 0.25.

In accordance with these two parameters, the unpleasant noise emitted by a metal tile or a metal roof will be perfectly extinguished by a sound insulator based on glass or basalt fiber, mineral wool. Another interesting material, which combines both noise and heat insulating properties, is cork fiber. Produced in rolls of 10 m with a web thickness of 2 to 8 mm. It can also be purchased in the form of a modern liquid cork material. It is more expensive than traditional cork, but the result is clearly worth it.

Penofol, which is additionally an excellent vapor and heat insulator, will perfectly cope with the noise insulation of a roof made of corrugated board, providing combined protection of the roof. If you put it with the outer layer of foil down, it will further enhance the heat transfer to the house. If you need inexpensive, but at the same time reliable way roof soundproofing, special mastics based on polymeric material or bitumen will perfectly cope with this task. They make the roof material heavier, thereby muffling the sounds from the outside.

During the construction of a private house, roof insulation is often done. The reasons that encourage owners to install soundproofing material are different. Some want to have an insulated roof (and insulation is one of the best materials to isolate from noise), someone seeks to avoid natural noise (rain, wind). However, with incorrect calculations of the amount of material used, saving on its quality and improper installation will lead to the fact that the sound insulation of the roof will be absent or it will become difficult to dampen all sound waves from the outside. How to avoid mistakes when purchasing and installing soundproofing?

Metal tiles and corrugated board are the most noisy roof coverings.

What causes noise?

Many people who do not live in a private house are surprised at the presence of noise from above. Since there are no neighbors, where does the noise come from? But noise can be caused by various natural or man-made causes. Homeowners who have chosen metal roofing to cover the roof of the house are most often affected. Any metal is not only a good conductor, but also a sound amplifier. Thus, the sound of rain will be amplified many times and turn into automatic shots, even a weak wind will howl and whistle upon contact with such a coating. Apart from natural phenomena, noise can also be caused by various man-made factors. For example, vibration that occurs when a car passes, when a building is located near tram or railway tracks. In these cases, not only the sounds of passing vehicles (or other phenomena) are heard, which are amplified by the metal sheet, but also waves of mechanical vibrations appear that occur during vibrations of the roof structure itself. The same disadvantages have a roof made of corrugated board, some types of ceramics, etc.

Materials for roof insulation will help to reduce the noise insulation index.

In addition, the causes of noise may be improper installation of coatings, deformation of the roof under the influence of external factors and errors in the design of the roof. A widespread mistake is the wrong angle of the roof slopes. At large angles, the drops touch the roof tangentially, making little noise, and at small angles, they fall to the surface, making the loudest possible sound. Therefore, the smaller the angle, the more the sound is amplified. Installation errors include incorrectly nailed roof sheathing and an insufficient number of fixing points. If the lathing is not done correctly, then the metal coating will sag, which will allow a flatter surface to appear.

In the case of savings on hardware, the likelihood of displacement of the coating sheets increases, as a result, noise appears.

In order to prevent and reduce the appearance of extraneous sounds, it is recommended to be careful during the roofing process and follow the installation rules for a particular type of ceiling. But this does not give a 100% guarantee of protection against unwanted sounds.

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Insulating materials

Today, there are several ways to reduce externally received decibels to 0:

• Special roofing materials, such as sound-absorbing metal tiles.
• Installation of a special membrane on the rafters (battens) of the roof. For this, films with high viscosity and elasticity are used. For example, the use of expanded polystyrene can reduce decibels by 2-2.5 times.
• Roof insulation between roofing and rafters.
• The use of insulation materials for sound insulation.

For insulation, such a cheap and available material like minvata. It is used to create a protective layer over the room ceiling. For these purposes, rolled mineral wool or mineral wool in slabs is suitable. It is possible to create a soundproof barrier between the rafters and the roofing.

In addition to mineral wool, there are other materials for noise isolation. To determine the quality of the connection, there is a sound absorption coefficient. Materials with a coefficient of 0.4 and above are considered suitable for creating sound barriers (mineral wool has a coefficient of 0.72). Substances such as polystyrene foam, polystyrene foam, polyurethane foam have proven themselves well.

Air is also a good insulator. Attics are good air insulators. The sound layer can be created using special breathable polyethylene.

As can be seen from the description of the options for organizing sound protection, as well as from the materials that can be used, the choice of means and methods is large.

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Insulation between rafters and roof

This is the most complex technological solution, but it will save free space(for example, an attic can be turned into an attic or a room). In this case, the soundproofing of the roof is done before the installation of corrugated board or metal tiles.

In order to make it, you will need the following additional materials:

1. Plywood sheets (optional).
2. Soundproof boards.
3. Drywall or lining.
4. Hardware.

Highly important point is the need for high mechanical strength of the rafters and the entire load-bearing structure, since the materials for the implementation of the sound barrier have a large mass (especially drywall).

Before starting work, the lining (if used) and plywood are treated with impregnations to protect the wood. Use antifungal solutions and Aquastop (or some other water-repellent solution). This allows you to extend the life of the protective layer.

Next to the crate with inside stuff (screw) lining or drywall. This is done to level the surface and secure the insulating material. The selected plates are tightly laid in the resulting cells from the outside. The cells are rammed and material is added (if possible). At the next stage, you can sew up the cells on the outside with plywood. This will keep the materials longer and will not affect the quality of the roof.

When the material is laid, a special membrane film is laid on the outside. It must drain condensate, in addition, the film is an additional barrier to noise. A roof covering is mounted on top of the film.

Such work is carried out in order to ensure the sound insulation of metal tiles. This is due to the fact that the inner surface of such a coating is almost flat (unlike corrugated board and other materials).

If it is not possible to perform these works, you should resort to another option, namely, laying mineral wool slabs on the floor of the room.

The sound conductivity of different roofing materials is different. Metal and metal roofs are notorious for roaring during heavy rain. It is up to you to decide whether it is worth soundproofing the roof: the preferences of homeowners are also different, some people fall asleep better under the sound of rain.

Causes of noise

• The truss system / crate is installed unevenly: different thicknesses of the bars. The material does not adhere tightly to the crate. As a result, it resonates more strongly.
• An insufficient number of fasteners (the recommended number is 8-10 pieces per square) also leads to a loose fit.
• Poor cutting of sheets, tight laying leads to deformation of the coating.
• A small roof slope also contributes to increased noise: drops slide along a steep slope, and all the impact load falls on a gentle slope.

Change slope finished roof problematic. In other cases, soundproofing the roof of the house is feasible if the installation flaws are corrected.

The main methods of soundproofing the roof

What else can be done to soundproof the roof of a metal tile house, besides correcting laying defects?

1. The right choice of roofing material. For example, a metal tile with sound absorption effect.
2. Creation between the crate and the coating of an additional soundproof barrier (for example, a layer of polystyrene).
3. Laying soundproofing material between the rafters from the attic side, followed by cladding with drywall, clapboard or other panels with low sound conductivity.
4. The choice of insulation with soundproofing properties: basalt wool, expanded polystyrene.
5. can cover profile sheets a mixture of varnish and mineral granules. Get a homemade analogue composite roof tiles, and it is known to have soundproofing properties.

note

Noise insulation of a corrugated roof is carried out in a similar way.

Choice of sound-absorbing material

When choosing suitable material guided by two parameters:

• Elastic modulus. Dense material dampens sounds better than porous/loose. Examples of good insulators: fiberglass, basalt wool, isolon (polyethylene foam). An example of a weak insulator: Styrofoam.
• Noise reduction index. Expressed in numbers. The recommended value is from 0.6. In this regard, mineral wool also has an advantage: 0.6-0.8. For comparison: foam has only 0.15-0.3. Wood also has an index that is not the highest, 0.1-0.15.

Features of soundproofing the roof of a house from corrugated board

note

During installation, two conditions must be met:

• Leave an air gap between the soundproofing material and the roofing material.
• Provide competent acoustic decoupling at the junctions of the sound insulator to the rafters and inner lining attic.

The procedure for installing a roof with a soundproof layer:

1. Lay a waterproofing film on the rafters.
2. Stuff the laths of the crate, pre-treated from the bottom side mounting foam or waterproof glue.
3. Lay the sound insulator with an allowance on the rails.
4. Press on top with insulation boards. Pin.
5. Lay insulating pads made of polyethylene, rubber or felt.
6. Lay profile sheets.

If it is impossible to make soundproofing from the side of the roof, you can try to isolate the house from the side of the attic:

1. Lay the material between the rafters.
2. Stuff from above wooden slats that will fix it.

Our company has been in the roofing industry for many years. We know the features various roofs and produce soundproofing professionally.

Noise is a constant companion of people living in big cities. Its excess causes fatigue, nervousness, irritability. Therefore, it is very important to provide reliable sound insulation. external coatings buildings and, first of all, the roof, since it is the most vulnerable part of the structure. The roof is directly exposed to precipitation, temperature changes, and the quality of its coating is directly related to sound insulation. And given the trend recent years settle in attic space in order to expand the living space, the protection of the roof from atmospheric precipitation and extraneous noise becomes one of the main criteria in building a house. Soundproofing the roof of a house is especially important for roofs made of metal sheets, metal tiles, as they have high resonant properties.

On the market modern materials for roofing, the main share (up to 80%) falls on metal tiles and corrugated board. This is due to the high quality of these materials and the long service life (up to 50 years) of such a roof. But for all positive qualities metal roofs make a lot of noise, for example, when strong winds and drumming downpour, which creates a certain discomfort. In this case, it is impossible to do without creating a reliable soundproofing layer of the roof during the installation of its structure.

Roofs covered with metal coatings have high resonant properties, so they must be soundproofed

However, often the generation of noise is not associated with characteristic features roofing, and with illiterate actions during the installation of the roof:

• the roof will sag in some areas and resonate even with slight gusts of wind if the frame under the metal roof is installed unevenly, using slats of different thicknesses arranged in variable steps;
• when saving fasteners (self-tapping screws) for installation, the roof can emit strong sound effects even during light rain or wind, so the recommended minimum of self-tapping screws should be observed - 8-10 pieces. per 1 sq.m metal coating. It is also important to use only those screws that are recommended by the manufacturer of the roofing material, and not any that are lying around on the farm;
• incorrect cutting of sheets, and their tight laying leads to deformation of the material even without load. With strong cooling or solar heating, the deformation of the roof increases, and it begins to hum strongly;
• the sound insulation of a metal roof should be the denser, the smaller the angle of inclination of the supporting structure - these are the rules according to the physics of falling raindrops on sheet material.

It is not easy to change the configuration of the roof to achieve acoustic advantages, and it is not difficult at all to consider the first three points when installing the roof, especially since this will significantly improve the quality of soundproofing work.

Common methods of roofing soundproofing

There are several most common ways to soundproof the roof of a house:

1. Use of roofing materials with special properties. One of them, for example, is a metal tile with a noise-absorbing effect.
2. Laying speaker system(additional sound-absorbing layer) on the waterproofing layer or on the crate and rafters. Elastic and viscous materials, such as polystyrene, are considered suitable for this.
3. Sound insulation of roofs from the inside. Additional slabs of sound-absorbing material are laid between the rafters, and the insulating layer is covered with clapboard, drywall, ceiling tiles(they also absorb sounds).
4. They choose universal materials that can not only insulate the roof, but also solve the problem of hydro and sound insulation. These are polystyrene foam boards and mineral wool.
5. The metal tile is covered on top with a special mixture prepared from transparent varnish and basalt chips. Immediately before laying, the inside of the metal tile is smeared with this mixture and quickly fixed until the layer has had time to dry.
6. Finally, they arrange a soundproof cushion (attic) between the premises of the house and the roof.

However, the sound insulation of the roof of the house is carried out in most cases using special soundproofing materials. On what basis are they chosen?

Choosing soundproofing material for the roof

When selecting soundproofing materials, the main criteria to be guided by are two parameters: the first is the sound absorption index and the second is the dynamic modulus of elasticity. Each of them significantly affects the quality of sound insulation.

Noise reduction index shows which part sound waves was absorbed by the material. Insulating roofing material good quality has a noise absorption index of at least 0.6. For example, the wood index is 0.08-0.16, the foam plastic is 0.16-0.26, but the mineral wool has an index of 0.65-0.8. Therefore, mineral wool, ecowool (cellulose insulation) are considered the best soundproofing materials. They create a reliable thermal barrier and at the same time protect the house from extraneous noise. Styrofoam cannot be recommended for roof soundproofing.

Dynamic modulus of elasticity - second parameter. It characterizes the elasticity of the material. The lower the value of this parameter, the higher the sound-absorbing properties of the material. In other words, dense material reflects sounds better than loose material. If we compare, for example, the sound-reflecting properties of fiberglass boards and foam, we can see that the first insulators are better than the second.

Features of the roof soundproofing device

Undoubtedly, the choice of quality materials is very important for the soundproofing of the roof. But it is equally important to follow the rules for its installation, so that all the qualities of the insulation, including soundproofing, appear in full. The main factors affecting the quality of sound insulation are:

• high-quality acoustic decoupling at the junction with the rafters and the inner lining of the attic;
• the presence of a gap between the soundproofing material and the enclosing roof structure.

If these requirements are taken into account, then the effectiveness of the noise barrier is beyond doubt.

Installation of soundproofing material

Soundproofing materials are laid when performing general roofing works, which allows you to initially make the right roofing cake with thermal, waterproofing and acoustic protection.

This is how a properly arranged roofing pie with waterproofing, thermal and acoustic protection looks like

Installation of roof sound insulation is carried out in the following order:

1. Waterproofing is laid on the rafters, lathing slats are stuffed on it. Each element is pre-treated with a waterproof adhesive solution or mounting foam. Process immediately before fastening the side that is adjacent to the waterproofing layer.
2. Next, soundproofing for the roof is laid, leaving an allowance for the rails. The thickness of the rails must match the thickness of the soundproofing material. From above, the material will be pressed by roofing thermal insulation, so it does not need to be fixed, but it should be laid evenly, without gaps. When calculating the amount of sound insulation, you need to add about 10-15% of the total area for cutting.
3. Soundproofing material must be laid under the insulation (polystyrene, polystyrene, mineral wool). If the roofing pie turns out to be too large, additional counter-rails will have to be stuffed onto the frame to securely fasten the roofing.
4. At the last stage, the roofing is installed. Between the crate and metal sheets lay special insulating pads made of felt, rubber or polyethylene foam, preventing the penetration of cold and vibration under the roof surface.

Soundproofing the roof from the inside

In cases where it is impossible to carry out work under the roof surface, the soundproofing layer is laid from its inside in the following way:

• sheet soundproofing material is placed in the gap between the rafters without gaps and gaps;
• the material is cut into pieces (they should be 8-10 centimeters larger than the inter-rafter gaps), which will sit tight and hold well inside;
• to prevent accidental displacement of the material, wooden slats are stuffed on top to hold it in place.

Laying a soundproof layer from the inside is a more complicated option in terms of installation, but also in this case you can achieve good results so that the house is as quiet and warm as possible.

A sound-absorbing material is laid in the space between the rafters - mineral wool or fiberglass, which simultaneously performs 2 functions - sound insulation and heat insulation

1. The roof is being built for decades to come, so saving on thermal insulation boards that provide and effective sound insulation roof is not worth it. Purchase high-quality soundproofing materials with a high sound absorption index.
2. Use mineral wool materials in combination with new soundproofing methods that involve the use of special soundproofing fasteners when installing acoustic structures.
3. AT without fail lay all layers of the roofing "pie" recommended by experts. Don't think you can do without any of them. Each material has its own purpose.
4. It is better to purchase all the components of the roof structure in one place in order to save on discounts and minimize the risk of purchasing fake goods (this is practically impossible in large hardware stores).

And in conclusion - the most important advice. Having spent a lot of money on the purchase of expensive roofing materials, do not skimp on the involvement of qualified specialists for the installation of the roof. Professionals will do the work in strict accordance with the technology indicated by the manufacturer in the instructions, and this guarantees peace and quiet in your home.

Noise insulation of the roof of a house made of metal tiles is necessary to provide acoustic comfort to people living in the house. Soundproofing material can be installed after the roofing is laid, but it is more efficient to provide for the installation of soundproofing elements at the roof design stage.

Features of a metal roof

The metal roofing has enough long term services. roofing material affordable, easy to install, relatively light weight, can be used on roofs complex shapes. It is worth noting the wide color scheme metal tiles. However, sheet metal roofing has a significant drawback: the coating protects well building construction from external influences, but at the same time the material has extremely low thermal and sound insulation properties. In other words, thermal insulation and sound insulation of a roof made of metal tiles is an obligatory step in the arrangement roofing cake residential building.

"Loud" roof: the main reasons

The sound of raindrops drumming on a metal roof is clearly audible in the house if the roof does not have high-quality sound insulation.

If the installation of the coating is made with errors, the “noise” of the metal roof increases significantly, it can rattle and resonate even with small gusts of wind.

The most common installation errors are::

1. The crate under the metal tile is installed unevenly, with variable pitch, using slats of different thicknesses. In this case, in wide areas, the roofing sags, due to which a resonating effect arises - the “loudness” of the roof increases markedly.
2. Savings on fasteners. If during the installation of metal tiles to use less than 7-10 self-tapping screws per 1 square meter coatings, the roof during the rain "sounds" stronger. It is important not only to create required amount fastening points, but also use special fastening fittings for this roofing, equipped with a neoprene seal.
3. Wrong cutting sheet material, installation of sheets of metal tiles "stretched". In this case, the material is deformed even in the absence of an external load. Metal heating from sun rays or strong cooling provokes an increase in deformation displacements, as a result, the roof may begin to “buzz” even in calm weather.

The soundproofing of metal tiles should be the denser, the smaller the angle of inclination of the roof slope - this is due to the peculiarities of the physics of the fall of water drops on sheet metal.

By avoiding mistakes during the installation of a roofing pie, it is possible to significantly increase the efficiency of work on creating a reliable soundproofing of a roof made of metal tiles.

What material to choose for soundproofing?

To create high-quality sound insulation of a roof made of metal tiles, various materials. When choosing, you should focus on the following parameters:

• sound absorption index;
• dynamic modulus of elasticity.

The sound absorption index (IS) is mandatory indicated by the manufacturer on the packaging of the material, in manuals and instructions, and the material itself can also be labeled directly. The sound absorption index indicates the proportion of sound energy that an insulator can absorb. The higher this parameter, the more efficient the use of this material.

The role of the soundproofing of the roof is performed thermal insulation materials. Today they are very popular polymer materials, in particular, foam and foam. The sound absorption index of foam plastic sheets is only 0.3, which means that the material is unsuitable for soundproofing roofs with a “loud” coating. The penoplex index is 0.5, which corresponds to the lower limit of applicability.

Cotton materials have an advantage in this component:

• FROM glass wool - 0.6;
• FROM mineral wool - 0.7;
• FROM basalt fiber - 0.9.

Among the materials of the affordable price segment, these are the most effective options for soundproofing a metal roof.

Second parameter soundproofing materials is the dynamic modulus of elasticity (DMU). The lower this value, the higher the acoustic protection. For example:

• DMU foam 0.6-1.35;
• DMU of mineral wool 0.3-0.35;
• DMU of basalt fiber and glass fiber from 0.05 to 0.25 (depending on the technological design and thickness of the material).

Considering both parameters, we can conclude that the noise from metal tiles will be most effectively extinguished by insulation made of basalt fiber, mineral wool or fiberglass. But at the same time, it should be borne in mind that the purchase of a sound insulator made of basalt fiber will cost significantly more.

Soundproofing work during the installation of a roofing pie

The installation of soundproofing material can be carried out from the side of the attic, or from the outside, before the installation of the roofing. The second option is usually resorted to, if necessary, to provide acoustic protection for an already mounted roof.

When arranging new roof a special waterproofing membrane or ruberoid. A rack frame should be filled on top of the waterproofing. At the same time, it is important not to damage the membrane with fixing fittings in places where it does not lie on the rafters.. Each frame rail immediately before fasteners must be treated with mounting foam or waterproof glue on the underside adjacent to the membrane.

The soundproofing material is placed in the gaps of the frame with some "overlapping" on the rails. The height of the rails is determined by the thickness of the material used. The sound insulator itself does not need to be fixed, it holds upper layer thermal protection. This layer of material must be laid as evenly as possible, avoiding tears and crushing.

When purchasing soundproofing material, 10-15% of the total roof area is laid down for installation losses.

On a frame wrapped mineral wool(noise insulation under the metal tile), it is recommended to lay a heater - it can be foam, polystyrene or roll materials by attaching it to the rafter legs. Next, it is necessary to fill the counter-lattice along the rafter legs, mount the crate and lay the finishing roofing, observing the metal tile installation technology.

To increase the effectiveness of roof sound insulation, it is required to exclude acoustic bridges during the installation of metal tiles.

Sound vibrations from the roofing are transmitted through the rafters to the wall sheathing, which significantly increases the resonating surface. The insulating material cannot reduce this vibration. For this reason, it is necessary to use special insulating gaskets when mounting the counter batten. Felt, rubber or polyethylene foam can be used as gaskets.

The anti-vibration pads used must be of the same thickness.

Soundproofing finished roof

Noise insulation of the roof of a house made of metal tiles can be performed after the installation of the roofing. In this case, sheet or roll insulation acts as a sound insulator, which is placed between the rafters and fixed with slats or a stretched cord.

If vibration-proof pads were not used during the installation of metal tiles, the effectiveness of internal sound insulation is noticeably reduced.