Soundproofing of interfloor ceilings using wooden beams. Rules for insulation of interfloor ceilings

Living in your own cottage can be overshadowed by low indoor temperatures during the cold season and high costs for heating the building. To avoid this, insulate the ceiling of a private house. Using traditional and new materials, ceiling, attic or interfloor insulation is performed.

The process of insulating floors in a frame house using mineral wool

Benefits of wood

Floors are horizontal structural elements of buildings and structures that divide them into floors or separate them from technical rooms (attic or basement). Depending on what material the building is constructed from, the floors can be monolithic, prefabricated reinforced concrete or wood.

For the construction of a private house, floors on wooden beams are most suitable, since their weight is less than that of structures made from other materials, and constructing them with your own hands is cheaper and easier.

Wooden interfloor ceilings can be installed in houses made of any material, with the exception of monolithic reinforced concrete. They are erected simultaneously with the construction of the walls, as the latter are built to the height of the next floor. In frame wooden buildings, floors can be made simultaneously with the construction of the frame of the entire building, even before it is insulated and covered.

Comments

Hello! in a 4*5 summer house they made a ceiling with insulation, laid joists, from bottom to top: 25mm lining, Lighttek insulation on it, 100mm along the joists, exactly their width, covered everything on top with an overlapping membrane film, over the staples. We arrived at 0 degrees, heated the gas stove to +20, climbed into the attic - stuck my hand through the film - the insulation is damp, is this normal?

No, it's not normal. There, most likely, there is no vapor barrier on the bottom, and on top there is not a breathable membrane, but a film. This should not be the case, the insulation will be wet.

The answering procedure is the same as with your question about gender. Submit your question to the website, in the Questions and Answers section, the Ask a Question button, orange, on the right.

Correct floor design

Interfloor wooden floors are arranged on beams. They are usually used as timber. The size of the section depends on the size of the span that needs to be covered, as well as on the size of the expected load on the floor and the types of wood used. Most often, timber with a section width of 100 mm and a section height of 150-200 mm is used.

Next, the ceiling itself is formed by installing the floor boards of the upper floor and hemming the ceiling materials of the lower floor. You can often see that floor boards are laid directly on beams, but it is more correct to first install logs on the beams, and then make flooring from the boards over them. The second option is the most preferable, as it will allow for proper interfloor insulation along wooden beams.

The fact is that in the pie, which the filling of the interfloor ceiling is so similar to, there must be layers of vapor barrier.

They are made of a special membrane with a certain coefficient of vapor permeability, and the top layer of the membrane allows steam to pass in only one direction - from the insulation into the air. Therefore, an air gap is needed between the membrane and the plank floorboard, which will remove steam from under the boards. Otherwise, the latter will simply begin to rot.

In this case, the membrane is laid on the interfloor floor beams, and the air gap is formed due to the thickness of the logs laid perpendicular to the beams.

Steam is removed from under the boards through specially cut holes in the floor or slotted skirting boards used to edge the perimeter of the room.

Note! The bottom layer of the membrane must be made of a material with a very low vapor permeability coefficient.

This is necessary so that moisture from the lower rooms does not seep upward through the interfloor ceilings, and also does not linger in the layers of insulation. All air from the floor should be vented into the atmosphere only through ventilation ducts or windows for ventilation.

Standards for insulating attic reinforced concrete slabs

To produce high-quality insulation of the attic floor and extend the service life of the roof covering and rafters, you need to use a vapor barrier. It is worth knowing how to install a vapor barrier correctly. The vapor barrier is laid on the slab, and the thermal insulation is on top. This will prevent moisture from forming on the wood and metal parts of the attic. If the vapor barrier layer is damaged, as a result, the thermal insulation properties of the insulation deteriorate.

Thickness of the insulating layer of the attic floor

Insulation layers

So, if you imagine a cross-section of the interfloor insulation cake, it will consist of the following layers:

upper floor flooring boards;
logs;
floor vapor barrier;
beams with a layer of heat and sound insulation laid between them;
ceiling vapor barrier;
ceiling cladding.

In multi-storey buildings, insulation of the interfloor floor is relevant only if this floor is made between the basement and the first floor, as well as in the case of the floor between the upper floor and an unheated attic.

If the ceiling separates two residential heated floors, then the role of insulating material for insulation is negligible. In this case, the soundproofing properties of the structure are much more important. Despite the fact that heat and sound insulating materials are included in the same group when classified according to purpose and technological characteristics, their properties may be different.

These differences must be taken into account when using this or that material in a specific interfloor covering.

Basic requirements for floors

During the construction of floors, a sufficient degree of noise insulation should be ensured; the value is established by design standards. To do this, you should close the gaps at the places where the material joins; only in this case, sounds from neighboring rooms will spread minimally. Floors that separate rooms with a certain temperature difference must meet thermal protection requirements. This indicates the need to use an additional layer of thermal insulation. Any structure, especially one made of wood, is not able to withstand prolonged exposure to fire. It should be remembered that each material is characterized by a certain fire resistance limit. For reinforced concrete floors it is 60 minutes, but if the structure is made of wood with backfill and has a plastered surface underneath, then the fire resistance will last 45 minutes. Wooden floors that are protected with a layer of plaster can withstand flames for about 15 minutes. If there are wooden floors that were not protected with fireproof materials during the installation process, it should be taken into account that their fire resistance limit is even lower.

Types of floor insulation

The logs are wide bars installed on an edge and running from wall to wall parallel to each other. Plastic or metal beams can also play their role. Next, the finished floor boards are attached to them, so it is very important to lay them correctly so that over time the floor does not begin to creak or deform.

The selected insulation option is placed between and sometimes under the joists. Let's try to figure out which material for floor insulation is better to give preference to, and which should be completely abandoned.

It is not necessary for the logs to be exactly boards. Often this is an ordinary beam, adjusted to the level in one plane. The main thing is to secure them well and level them so that subsequent laying of the floor does not bring problems to the homeowner.

We will consider the most popular types of insulation materials, which are distinguished by fairly high heat saving rates.

These included:

sawdust or sawdust mixture;
expanded clay;
glass wool;
mineral wool;
ecowool;
penoplex;
expanded polystyrene.

All of the listed insulation materials are quite airy, which means they will let the cold through with great reluctance. In addition, a high-quality layer of insulation can prevent the appearance of high humidity in the house, which is also important.

Option No. 1 - budget sawdust

This material has the most unstable characteristics. Often, it becomes saturated with moisture, which significantly worsens its heat-protective properties.

In this case, the owner better take care of the bottom layer of waterproofing, since wet wood will begin to rot, and this can cause not only damage to the coating, but also a number of serious diseases.

Often, as a relatively inexpensive option, pellets or sawdust granules similar to pellets are used to insulate the floor. In them, sawdust is compressed and held in place by an adhesive base.

Such insulation will have slightly better thermal conductivity, but experts do not recommend insulating the floors of your home with such material. Its moisture resistance leaves much to be desired.

Of course, if you plan to insulate the floor in a country house or in an outbuilding, you can use sawdust, but they are completely unsuitable for insulating floors in a house. It is better not to save money, but to purchase more expensive and high-quality insulation.

According to experts, sawdust is one of the most undesirable materials for floor insulation. But the budgetary nature of the material often takes its toll. Experienced builders recommend using sawdust only when insulating the floor of outbuildings

Commonly used insulation materials

Due to the high functional properties of mineral wool, it can be used to insulate all surfaces, even uneven ones. Insulation is produced in rolls or soft slabs. Preference is given to material with a shielded heat-reflecting coating. You need to lay it tightly, but without jamming. This option has the best price/quality ratio. At low cost, good efficiency and durability. When installing insulation, it is necessary to use personal protective equipment. A protective material is placed on top of the wool that does not allow steam and water to pass through. The insulation on the floor is overlapped and glued to avoid displacement.

TechnoNIKOL attic insulation

Note A more environmentally friendly insulation material is stone wool. At the same time, having an excellent thermal conductivity indicator for its class, it effectively smoothes out temperature changes and maintains a comfortable microclimate.

Classification of noise and methods to combat its spread

To effectively reduce the volume of sound passing through ceilings, you should clearly understand what you have to fight with. In some cases, laying soundproofing material is sufficient, while in others it will be necessary to make changes to the structure of the ceiling structure.

According to standards in residential premises, a comfortable noise level is considered to be within 40 dB, and harmful to hearing - more than 80 dB

Sound pressure levels of various sound sources

Rules for sound insulation with soft materials

The effectiveness of soundproofing work depends on how correctly the technology is followed, since otherwise it can result in discomfort when using the finished room. Considering that each method is individual in terms of installation, they must also be considered separately.

Soundproofing with sand

The process of sound protection of a partition using sand is very labor-intensive, and there is a lot of controversy about this. In addition, sand creates a lot of pressure, which causes characteristic inconveniences. If we consider the basic rules of this method, they are as follows:

The sand must be dry, since the moisture content of the substance not only adds weight, but also causes a violation of the hygiene of the finished insulation.
It is necessary to make a cellular subfloor to fill each compartment separately with sand to prevent the spread of extraneous sounds and noises.
You can make a “floating” floor on top of a layer of sand for a better effect.

Sand technology also has certain technological features that cannot be ignored:

A lath is fixed to the underside of the beam, and the resulting gap must be sealed with solid plywood to avoid depressurization of the seams. Additionally, a vapor barrier is installed.
To connect wooden partitions, it is recommended to make small slots under the beam, since this is how you can achieve the maximum “adhesion” effect. As a result, small blocks will be provided for subsequent filling with sand.
When filling the cells with sand, it is recommended to retreat a couple of centimeters from the top to avoid overfilling if the sand’s moisture content increases. And a small gap creates optimal ventilation conditions.
After filling the blocks with sand, you need to cover them with felt, and then lay plywood.

Such a “sandwich,” as experienced craftsmen say, allows you to avoid uneven sound insulation, since all the components and structures will be connected to each other as firmly as possible.

"Floating floor" for wooden floors

Technologies are provided in a wide range, so each client, depending on the need, will be able to choose the most practical and effective option. And the “floating” floor technology is considered one of the most effective techniques.

To create a “floating floor” you need to acquire the following components:

Sealant.
Elastic gasket for insulation.
You can't do without lag.
The flooring is created from chipboard or OSB panels.
Acoustic mineral wool slabs are used as optimal sound insulation.
You will also need insulating supports.

You can achieve the desired effect if you take into account the following recommendations:

It is important to increase the mass of the top flooring.
The logs must be installed on elastic supports with a low resonant frequency.
The height of the logs increases to the maximum possible level.
Mineral wool slabs, which have a high sound absorption coefficient, are suitable for arranging the insulating layer, thanks to which the desired effect can be achieved.
The flooring between the floor and the walls must be separated using elastic insulating spacers.

As studies have shown, the presence of a “floating” floor in a soundproofing coating system makes it possible to create a comfortable space in terms of the absence of extraneous sounds.

Warm "floating floor"

In addition to the standard “floating floor,” warm technology can be used, which combines not only noise insulation, but also thermal insulation properties. The technology is very simple, but still combines certain design qualities that cannot be ignored:

Before installing the insulation, the entire beam must be treated with an antiseptic agent to avoid subsequent deformation from high humidity.
Between the beams, a rough flooring is prepared from boards 25-30 millimeters thick, and then the top layer is made and a vapor barrier is made to protect the structure.
After the vapor barrier, insulation is laid, and here it is necessary to lay the product not only on top of the beam system, but also between them. This way, cold bridges are eliminated and the desired thermal insulation is formed. The technology is ideal for sound insulation.
A vapor barrier is again laid on top of the insulation. This creates a greenhouse effect for maximum heat accumulation.

Important! All layers must be as tight and high quality as possible to avoid bridges of cold and humidity.

It is better to make the subfloor from boards 30 millimeters thick, but experts recommend using two layers of chipboard to avoid open joints.

Due to the fact that the structure is strong and dense, it will stay in place without additional fastenings. And also the absence of fastening elements eliminates the appearance of impact noise when using the upper floor.

How can you isolate?

To insulate floors, materials are selected that are most suitable for a particular climate and the structure of the floors.

When purchasing thermal insulation material, you should make the following requirements for it :

lowest thermal conductivity;
environmental friendliness (no toxic substances released);
fire resistance;
thickness appropriate to the climate;
resistance to moisture accumulation;
sufficient strength, resistance to shrinkage;
ease of installation.

Insulation materials can also be divided according to their release form. There are both fairly dense options that you can walk on, as well as loose ones, such as sawdust or foam. The entire process of installing thermal insulation, including the structure of the ceiling itself (the pitch between the beams and the presence of sheathing), depends on the form of release.

The thickness of the insulation is of great importance; it is calculated using a certain formula:

q=R*k

Where:

q – required material thickness;
R – thermal resistance;
k is the thermal conductivity of the insulation.

Table 1 shows the thermal resistance for each region:

Table 2 shows the thermal conductivity for each material:

For example , to calculate the required thickness of mineral wool for a wooden floor in Voronezh, you need 3.8*0.035=0.133. 13 cm is the required insulation thickness. But since the cotton wool will shrink over time, this figure can be rounded to 15-17 cm.

Minvata

For interfloor wooden floors, mineral wool and its varieties are most often chosen. This choice is due to the ease of installation, sufficient thickness, as well as excellent resistance to fire and smoldering. Basalt wool begins to melt only at a temperature of +600 degrees.

This is the highest figure among all known insulation materials. But it has a significant disadvantage - it easily accumulates moisture, as a result of which it becomes moldy. It is for this that the highest quality waterproofing is needed.

Polystyrene

There are 2 options for polystyrene:

extruded;
non-extruded.

They differ only in the degree of density. Non-extruded polystyrene is ordinary foam plastic, it is quite brittle and flammable material. Extruded polystyrene foam (EPS) is more durable and monolithic.

In terms of thermal conductivity and other indicators, they are almost the same. This insulation does not require water insulation; insects and bacteria are not interested in it.

Polyurethane foam

This type of insulation is considered the highest quality.
It has the required thermal conductivity, does not absorb moisture at all, does not shrink or decompose. Apply to any surface using a special sprayer .

As it dries, it swells, creating the desired thickness. It can be sprayed both on the floor and on the ceiling, insulating the ceiling on either side. During installation, polyurethane foam gets into all the cracks without creating gaps.

The only negative is that insulation services are quite expensive, so they are not yet so popular.

Wood sawdust

If there are no other options, you can insulate the ceiling with sawdust and shavings. The process is not simple, but it is cheap. To mix the composition, take cement, lime and water, mix and lay out a layer in the cells between the beams .

The insulation is heavy due to cement, and flammable due to sawdust. Therefore, the chips must also be treated with fire retardants. There are many disadvantages - mice love it, mold, it burns, it is afraid of moisture. One of the advantages is that it is cheap, you can buy a machine of sawdust for 3-5 thousand rubles and use it to insulate all floors from the basement to the attic.

Expanded clay

Expanded clay is produced in granules, similar in diameter to sand, crushed stone or gravel. These names are used for classification. For wooden flooring, coarse expanded clay is used. It is laid on a vapor barrier because it is able to absorb moisture because, in fact, it is fractional clay.

In terms of thermal conductivity, it is inferior to all of the listed insulation materials, and it is also quite heavy, because the insulation layer for it to work requires a large one, about 20 cm or more. It is quite popular on the market due to its low cost.

Beams in a brick house

In a brick private house, before laying, the ends are wrapped in roofing felt or tarred. The space between the end of the beam and the brick is filled with insulation, more often with mineral wool. Be sure to leave a gap for ventilation so that the material does not rot or become covered with condensation. If grooves are not provided, then the beams are fixed with your own hands onto anchors previously embedded in brick or reinforced concrete.

The insulation is placed exactly between the joists and beams, no more and no less. It is allowed to leave 3-4 cm for ventilation . It is not advisable to use polystyrene foam and polystyrene in this case, as they have poor sound insulation.

Calculation of sections of beams between floors

Extruded polystyrene foam and material that suppresses rattling noise are allowed. Next, chipboard and flooring are laid out.

The role of sound insulation is performed by insulation from glassine sheets; any heat-insulating material is used.

When building interfloor wooden floors with your own hands, special attention is paid to the places where the pipe options pass: boiler rooms, chimney rooms, fireplace rooms. The gap between the beams and pipes must be at least 0.25 m. An asbestos gasket is installed around the pipes. Instead of asbestos, you can use basaltite.

Method of fastening wooden beams in wall grooves

Sand as a soundproofing layer

Soundproofing with sand has been used for a long time because the material has the ability to absorb both low and high sounds. In its mass it is porous with small cells inside between the particles. It is there, reflected from the walls of the air chamber, that sound waves are damped.

But sand has several negative characteristics:

high specific gravity, which requires the construction of floors using powerful beams and a rough foundation (ceiling);
high thermal conductivity, it is impossible to insulate floors with sand, you will have to add an additional layer of thermal insulation material;
If you do not assemble a sealed structure, sealing all the cracks and holes, then sand will penetrate into the premises of the house.

Sand is used as a soundproofing layer in wooden floors

Timber laying algorithm

During the construction of walls intended for laying timber, they are covered with their own hands in several layers of roofing material. 1 day before laying, the timber is treated with a fire retardant solution to protect it from fire .

At the ends, the timber is hewn at an angle of 60° and treated with an antiseptic solution, then with resin.

The ends of the wooden beams are wrapped in waterproofing material and placed in niches. The distance from the ends of the beam to the walls of the niche must remain at least 4 cm. This device is filled with foam plastic or mineral wool.

Do-it-yourself ceilings in a timber house

If the wall is brick and the thickness of the wall is less than two bricks, the space is filled with cement mortar. Every third beam is fixed with an anchor protruding from the wall by 20 cm, laid during the construction of the wall. First, a device for an anchor corresponding to the diameter and depth is drilled into the beam with your own hands.

In the wall, the beam is additionally secured with a bracket attached to wooden beams.

The beams are laid from the walls to the center, checking the evenness of the laying with a level. Having discovered an unevenness, it is eliminated using tarred boards adjusted to the width. It is forbidden to cut the timber or place it under wood chips, as this will lose the strength of the structure.

Beams are laid with your own hands strictly parallel to each other with the same spacing.

The outer beams are never placed close to the wall, leaving at least 10 cm. The beam is never installed directly next to the chimney pipe.

Methods for laying basement floors

For a wooden plinth structure, a cranial block is required. It will allow you to insulate the floor. After all, it is on this that the panels or board covering the insulation are mounted.

The more popular option is a rough layer of rolled or unedged boards. The material is mounted on a wooden block with a square cross-section and a side of 5 or 4 cm. It is best to attach the cranial beam to the logs with self-tapping screws, but you can also use nails.

Advice! You can attach the board not to the skull block, but to a groove (quarter). It needs to be cut with chisels or power tools. It will take longer.

The subfloor of the basement is insulated with bulk materials, including sand. Antiseptic-impregnated sawdust or mineral wool 10 cm thick is often used. To protect wood structures, a waterproofing layer is laid underneath. The most practical option is bitumen roll materials. For rooms in contact with moisture, waterproofing is also installed on top.

How to lay an interfloor ceiling on wooden beams?

Before installation begins, a calculation of the beam for deflection is made. You will need:

beams;
bars nailed to the lower parts of the joists (cranial wooden bars);
materials for waterproofing;
rolling shields,
floor and joists.

The use of backfill is inappropriate, since it does not have the necessary noise insulation properties. It is undesirable to use polyurethane due to its high toxicity.

The structure of such an overlap on beams is multilayer. The comfort of living in a private home depends on its quality. The options used here are noise-insulating and heat-insulating materials.

Step-by-step installation on beams:

A material that acts as a ceiling is attached to the beams: plywood, chipboard, boards, etc.
A vapor barrier ceiling covering is laid one on top of the other, overlapping; if necessary, the film is secured to the beams with a construction stapler.
Mineral mats are placed in the interfloor ceiling along the beams with special care.

The insulation must fit exactly onto the beams. The device serves as a sound insulator. If it is foam plastic, then it is best to fix it with wooden pegs between the beams and the foam plastic.

The insulation layer in the house is covered with a membrane that protects the structure from steam. The main purpose of this layer is to prevent mineral wool elements from penetrating into the room.

The device between the beams and ceilings is filled with polyurethane foam, and the remains are cut off after hardening.
Finally, waterproofing material is installed in the form of boards, chipboards, etc.
All gaps between the walls and slabs are filled with felt, thereby reducing normal and impact sounds. On the top floor or attic, a rubber-cork track is laid on the ceiling, which provides ideal sound insulation. The entire perimeter is accompanied by a gap in the form of foamed polyethylene or damper tape. Ventilation holes are formed in the corners, which are included in the general ventilation system in a private house. They will help remove steam and moisture from the ceiling.

Insulation and finishing

The location of the horizontal partition in the cottage determines the use of insulating and finishing materials. The thickness of the floors between floors depends on the height of the beams, the number of layers and the characteristics of the finished flooring. Do-it-yourself reeling device diagram:

50x50 mm cranial bars are nailed to the bottom of the side surfaces of the beams. They will support the roll-up and the insulation layer;
a roll is laid on the bars, which can be done by knocking down shields from boards;
the shields are connected and attached to the cranial bars;
if the ceiling is basement, then a vapor barrier film and insulation are laid on the “sub” floor. Waterproofing and a finished floor are laid on top;
Interfloor floors are lined from below with a vapor barrier coating, then with ceiling boards, plywood or wood boards. After laying the heat and sound insulation, the structure is covered with a steam membrane and floorboards are laid.

Floor boards are impregnated with protective agents, painted or varnished. Linoleum, laminate, and parquet are laid on chipboards. The ceiling is leveled with decorative tiles, boards or plasterboard. Then the finishing coat is applied.

1. Wooden elements are treated with water-based products that are intended for indoor use. Senezh Ognebio, made in Russia, is suitable for this - complex impregnation belongs to the 1st group of effectiveness of protection against fire and the influence of biological factors on wood.

2. The ceiling opening should not exceed 6 m, and the step of laying load-bearing beams should not exceed 1 m.

3. The minimum distance between the support beams and exhaust ventilation shafts is 250 mm.

4. The minimum thickness of the thermal and sound insulation layer is 100 mm between living spaces and 200–250 mm for attic and basement systems.

Expanded clay with a fraction size of 5–10 mm, perlite, slag, dry sand, polystyrene foam or mineral wool are used as insulation. Bulk materials are more accessible, but make the structure heavier. The most acceptable option for a private home - mineral wool has low thermal conductivity, repels moisture and, unlike foam plastic, allows air to pass through.

How to check the quality of flooring using beams?

Check for distortions in the wooden beams; they should not be more than 1.5 cm vertically and 2 mm horizontally. The change in shape of the materials used should not exceed 0.7 mm per meter.

There should be no vibration or noise while walking.

If you plan to use putty in the future, stretch a polymer film over the foam. Next, the suspended ceiling, plasterboard or MDF sheets are fixed. At this stage, you can finish the ceiling.

Installation Tips

When choosing sound insulation for interfloor wooden floors, it is recommended to use fire-resistant mineral wool panels, basalt wool, expanded clay, and antiseptic-impregnated felt. Other recommendations:

Use foil insulation if porous sound insulation is used.
Insulating each wooden block from each other will prevent structural noise from occurring.
Leave gaps between the walls, ceiling and floor, which are covered with roofing felt, this will avoid friction of the wood.

During installation, it should be taken into account that the greater the thickness of the total layer of insulating gaskets, the faster the sound wave of any range will be damped and dissipated.

Features of thermal insulation

Interfloor wooden floors do not differ from each other in construction technology. But in terms of insulation, they differ somewhat from each other. Thermal insulation of residential and non-residential premises requires a special approach.

Attic

The attic itself comes in two types:

Cold .
This is a non-residential premises that is either completely empty or designated as a warehouse for equipment, old things, etc. In the first case, maximum requirements are set for the ceiling, the insulation layer is thicker, and vapor and waterproofing are required.
That is, there should not be the slightest chance for a cold corridor to arise. The ceiling is insulated to the maximum, since the temperature in a cold attic in winter rarely exceeds 8 degrees.
Warm .
This is a full-fledged room, an attic where people live, an office or a recreation room. If there is an attic, the requirements for floor insulation are the same as for a conventional interfloor. You can lay a small layer of sound insulation. Since there will be no strong temperature changes, the likelihood of condensation accumulation is also low, so a vapor barrier will not be required if the room is well ventilated. On the attic floor, walls and vaults are mainly insulated.

Basement and basement

The basement differs from the basement only in the level of ceiling above ground level. But even this is enough to make a difference between insulation methods. The basement is underground, the wind does not get into it, so the temperature there never drops below zero. However, laying vapor and waterproofing is necessary, because the moisture coming from the ground is enormous.

The basement floor is raised slightly above the ground, which means that cold can penetrate through small cracks between the brick, stone or wooden walls. The temperature there will be like in the attic, so it is necessary to insulate the basement floor more carefully, using high-quality, thick insulation.

Between floors

If the entire building has interfloor ceilings of the same type, wooden, and all rooms, upper and lower, are heated equally, then there is no need for a thick layer of insulation .

In this case, it is laid only as sound insulation. If the room is dry and warm, then there is no point in paying much attention to hydro- and vapor barriers. It is laid only to protect the insulation itself from rotting and moisture accumulation.

If there is high humidity in the room, for example, there is a bathroom on the lower floor and a bedroom on the upper floor, then high-quality waterproofing is needed. Firstly, there will be strong temperature changes in the bathroom, and secondly, moisture and hot air will rush upward, the insulation will accumulate moisture, the wooden beams will rot and everything that comes from it.

Calculation of the amount of material and its cost

Calculation of sound insulation between floors is made based on the following parameters:

Sound insulation thickness, number of layers of base material.
Installation technologies. If a roll sound insulator is used under the subfloor, then the size will be equal to the area of the interfloor floor. When felt is used on logs or beams, footage is added taking into account bends.

Installation of the ceiling at the construction stage requires one roll of roofing felt. When purchasing layers of mineral or basalt wool, the area for insulation is first calculated without taking into account the beam exits. The foil material, which is spread under the subfloor, is taken with a reserve, taking into account that the flooring must be carried out with the smell of the sheet.

Properly installed sound insulation between floors will ensure silence in the house and enhance heat conservation. The market offers a range of building materials for insulating floors during the construction stage and for finishing old interfloor floors, without dismantling the latter.

Conclusion

The technology of soundproofing floors for a wooden house, in contrast to brick and concrete buildings, has a number of features that are directly related to the design of the floors, their properties and sound-conducting characteristics. The methods described above will help to isolate or significantly reduce the penetration of sound waves between floors in frame cottages, as well as in houses made of rounded logs or timber.

Sources

https://DrevoGid.com/zashhita/uteplenie/perekrytiya.html
https://texnotoys.ru/otoplenie/mezhetazhnoe-uteplenie.html
https://teploguru.ru/uteplenie/drugoe/mezhetazhnoe-uteplenie-ili-zvukoizolyaciya.html
https://ProAntiShum.ru/shumoizolyatsiya-kvartiry/zvukoizolyatsiya-mezhetazhnogo-perekrytiya-po-derevyannym-balkam
https://lestnitsygid.ru/kuda-vedut-lestnitsy/mansardy/shumoizolyaciya-derevyannogo-perekrytiya.html
https://opotolkax.com/plita-perekrytiya/mezhetazhnoe-perekrytie-po-derevyannym-balkam.html
https://obshum.ru/shumoizolyatsiya/mezhetazhnogo-perekrytiya
https://moydomik.net/steny-i-perekrytiya/253-zvukoizolyaciya-derevyannyh-perekrytiy-chumoizolyaciya.html