Staying in your own cottage can be overshadowed by low indoor temperatures during cold seasons and high costs. To avoid this, they carry out insulation of the floor of a private house. Ceiling, attic or interfloor insulation is performed using traditional and new materials.

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

According to the laws of physics, warm air always rises upward. If it is not heated, the heat from the lower floor goes out through it. Heat loss can be up to 40%. Warm air escapes through small cracks in concrete, pores in wooden ceilings. Correctly executed thermal insulation will prevent freezing and reduce heating costs.

In all private houses with a cold ceiling, it is recommended to insulate the ceiling. Such work can be performed during the construction phase or in an already erected house. In the second case, warming is carried out if the coatings were made a long time ago and have lost their heat-insulating properties over time.

Insulation materials

For thermal insulation, four groups of heaters are used:

In addition to the direct function of thermal insulation, they have. In summer, they protect the house from high ambient temperatures. Among the main properties of thermal insulating agents that are important for, there are:

Before making the final choice of thermal insulation, it is also important to analyze:

1. Climatic conditions. The colder it is outside in winter, the thicker the insulation layer should be.
2. Budget. Quite often, the choice depends only on the availability of money.
3. Additional work. What else needs to be done to insulate the floor.

Laying mineral wool in the beams before cladding the ceiling with clapboard

Perhaps this is the replacement of structural elements, finishing materials, additional application or treatment with refractory preparations.

Sawdust

Sawdust can be used for thermal insulation of the floor. Affected by its low price, availability, low cost of work. The main disadvantage of sawdust is flammability, low moisture resistance. This leads to easy fire, decay, and the appearance of fungus. Therefore, the sawdust is processed before laying.

The process of filling sawdust in the cavity between the beams under the flooring sheets

To reduce the moisture content and prevent the appearance of mold, sawdust is dried in a special chamber for a year. Later them, fungicides.

Slaked lime will help reduce the risk of rodent infestation. To reduce flammability, they are mixed with fire retardants.

Thermal insulation using sawdust is carried out in two ways. Sawdust is simply poured onto the prepared surface.


This method is not in demand. Since the shrinkage of the material begins rather quickly, which requires regular replenishment. For the second method, sawdust is mixed with cement mortar.

Styrofoam

Plate breathable material, has a low price, does not accumulate moisture, does not rot. Mold, fungi, microorganisms do not grow on the foam. It has high thermal conductivity, high temperature resistance, good sound insulation. Conducts moisture well. The light weight allows it to be installed on thin floors. Long lasting.

Installation of foam sheets to the ceiling

Main disadvantages:

1. Flammability. This is the main drawback of the material. It is not installed where there is free air access. When used for floors, they must be treated with plaster or refractory preparations.
2. Rodents. Mice are very fond of making their nests in Styrofoam.

To exclude the penetration of rodents, use a fine-mesh metal mesh.

Expanded clay

Bulk material is the second most popular insulation. It has high thermal insulation properties, is always on sale, it is easy to install it yourself.

Inexpensive. Disadvantages of expanded clay:

For styling, mix large and small particles. This combination will fill the empty space. To protect against moisture, cement mortar is poured. Its thickness should be no more than 20 mm.

Mineral wool

It is produced in the form of a roll, rolled out on the surface, cut off. The material is inexpensive, has good thermal insulation, and fits quickly. Among its shortcomings are noted:

The thermal barrier decreases when the cotton is squeezed, so it cannot be stepped on; flooring is made immediately after installation.

Penoizol and polyurethane foam

Heaters of this type are poured or sprayed on. This material cannot be laid by yourself, because its application requires special equipment, protective suits, professional skills.

Foam products fill all the smallest cracks and cracks. They do not attract insects, do not burn, and are safe for humans. The substance contains a large number of air bubbles, contributing to.
Disadvantages:

1. High price.
2. Fragility. The material does not regain its original shape after damage.
3. Shrinkage. Penoizol has a slight shrinkage.

After complete solidification, it is necessary to replenish the settled material.

Insulation technologies

Depending on the structure, the ceiling, attic or interfloor floors are insulated.

Ceiling slab

This type of insulation includes three main activities: preparation, interior work and work in the attic. The preparatory stage begins with cleaning the surface from debris, dirt, unnecessary items. For insulation with mineral wool, foam, sawdust, load-bearing beams 50 x 100 cm in cross-section are prepared. They must be checked before laying.

Scheme with the names of the insulation elements of the attic floor in the cottage

Damaged areas are removed or replaced. Mold, mildew is removed with a grinder or ordinary sandpaper. Beams must be treated with fire and bio-protection agents.
The next step is the installation of utilities.

Detailed diagram of the attic floor insulation

The process of warming the attic includes preparation, installation of thermal insulation outside and inside, thermal insulation of gables, finishing. Bulk products are not suitable for attic floors.

Insulation is carried out with slab or roll materials. When using reinforced concrete slabs, the outer and inner parts of the roof are usually insulated.

First, they remove the old flooring and check the rafter system. If necessary, change parts, carry out repairs. If the logs are thinner than the thermal insulator, they are built up with bars of a suitable size. All wooden elements are treated with an antiseptic and fire retardant.


A vapor barrier membrane is attached to the bars with a stapler so that the smooth surface is on the side of the thermal insulation. The insulating material itself is spread or laid. Another layer of vapor barrier material is spread over the thermal insulator. All seams are closed with tape. Insulation of the attic floor is completed with work on the manufacture of wooden lathing for fastening finishing materials.

Watch in the video the process of insulating the attic floor with mineral wool.

Interfloor overlap

Insulation of interfloor floors begins with checking the floor level. If differences are noted, it is better to eliminate them with a cement-sand screed. The beams are prepared, all traces of mold are removed, and the treatment is carried out with an antiseptic and refractory agents. The space between the beams and the structure is filled with foam, the residues are cut off. A waterproofing or vapor barrier membrane is attached to the beams.

Assembled vapor barrier membrane before insulating the interfloor overlap

They are wrapped with a film so that the edges remain open. This will allow them to dry better. The next stage is the insulation. For interfloor floors, it is advised to use foam or mineral wool. Waterproofing is mounted on top of the insulating material and finishing work is carried out at the end.

Houses made of rounded wood or natural timber are rightfully considered the most comfortable. Their high popularity is explained, first of all, by the naturalness of the material and good protective characteristics.

But all types of one-story buildings are characterized by significant losses through ceiling structures. Therefore, one has to fight for warmth and comfort in a wooden private house. A correctly chosen method and a well-thought-out insulation scheme are the main ingredients for success in this struggle.

Thermal insulation methods for wooden ceiling structures

Numerous technologies in wooden houses are divided into two groups according to the place of installation of the insulation:

• from the side of residential premises (from the inside);
• from the attic side (outside).

Both approaches have their merits and demerits. So, insulation of the ceiling in a wooden house from the inside will save money, but will reduce the useful volume of living quarters, and insulation laid outside will require additional protection from mechanical damage and more powerful hydro and vapor barrier, which will entail an increase in the cost of insulation.

In the classic version, the thermal insulation layer has the following structure:

• external vapor barrier;
• insulation material;
• lathing;
• internal vapor barrier;
• sheathing.

How to insulate the ceiling?

All materials that can be used to insulate the ceiling in a wooden house are divided into three groups:

• free flowing;
• soft;
• solid.

The first group is used only for external insulation. The other two are used in both methods.
The most popular representatives of each of the groups, respectively, are:

• sawdust;
• mineral wool;
• Styrofoam.

The easiest way to insulate is to finish the ceiling from the inside with foam. Its advantages include:

• relatively low material cost;
• light weight;
• unique steam and moisture repellent properties;
• ease of installation;
• environmental friendliness.

Stages of work

First, a waterproofing layer is attached to the hemmed ceiling between the beams. For this, you can use glassine, plastic wrap.

Foam plates are fixed on top of the waterproofing using special glue. After applying the adhesive to the insulation, wait 1 - 2 minutes and press it firmly against the ceiling. Plates are mounted end-to-end. If there are gaps between thermal insulation products, they are sealed with polyurethane foam. It is better to additionally fix the insulation on the surface using self-tapping screws with washers of a large diameter (10-14 mm.).

After installing the plates, a layer of glassine or other vapor barrier material is again laid. The whole process is completed by cladding and decorative finishing of ceiling structures.

Modern industry produces foam sheets of various colors and textures. The front surface can contain an abstract pattern, which, if correctly selected, will enrich the interior of the room.

Sawdust

Wood sawdust is a natural material and has proven itself well for thermal protection of wooden houses. This technology is somewhat more complicated than pasting with foam. The main difficulty lies in the preparation, or rather, the manufacture of insulation, which is a cement-sawdust mixture.

Preparation of the composition

Better to use medium-sized shavings. Thirse will not work for insulation. Its volume contains very little air. The sawdust should not be fresh. Raw materials are treated with antiseptic and antifungal compounds. The simplest solution to this problem is to soak wood chips in a solution of copper sulfate, after which it should be thoroughly dried.

The required volume of sawdust is equal to the planned volume of the insulation layer, the recommended thickness of which is 20 centimeters.

The process of preparing a cement-sawdust mixture consists of the following stages:

• in a spacious container (a trough with sides 25-30 cm) prepare "cement milk" by mixing water with cement in a ten to one ratio, and mix thoroughly;
• sawdust is added to the resulting mixture, which, during the mixing process, should be evenly covered with a layer of solution.

Surface preparation

Before proceeding with the manufacture of insulation, you should prepare the area for its application. This preparation includes the following steps:

• dismantling the attic floor;
• cleaning the space between the lags from debris and other foreign objects;
• treatment of all available structures of wooden floors with antifungal and antiseptic agents;
• laying a vapor barrier carpet (as insulation, you can use a dense polyethylene film laid with an overlap on the logs).

Applying insulation composition

Further, the produced cement-sawdust mixture is scattered over the overlap area and lightly rammed. The insulation must be evenly distributed between the floor joists. After complete drying, the resulting coating can be walked on.

One of the main advantages of this method of ceiling insulation is the low cost of materials. First of all, this concerns sawdust, which, having tried, can be purchased for free.

Mineral wool

A popular method of insulating a wooden ceiling is also using mineral wool. In terms of its thermal insulation characteristics, this material is superior to polystyrene. The installation process is relatively straightforward.

Vapor barrier layer

A vapor barrier is laid on the outer surface of the ceiling, freed from the coating, free of debris and foreign objects. As with sawdust, a thick plastic wrap will do.

Install it with an overlap of about 10 cm. The seams are glued with tape.

Insulation installation

Mineral wool is produced in slabs and in rolls. When using roll material, the cotton wool is unwound along the beams.

The second layer of insulation is laid in the opposite direction, covering the beams and joint areas.

For additional fixation of the insulation strips, you can use nails, the caps of which should be slightly “sunk” into the top layer of the material.

Waterproofing

One of the few disadvantages of mineral wool, but quite significant, is its hygroscopicity. It is very easily saturated with moisture, which has an extremely negative effect on its thermal insulation properties. Therefore, the insulation layer must have reliable external waterproofing.

Lay it on top of the mineral wool with an overlap with gluing the seams.

Finishing layer

If the attic is not in use, then a cement-sand screed can be made over the insulation structure. When arranging residential attics, floorboards or laminate are installed.

Insulating the ceiling of a private house is a relatively simple technological process. These works do not require any special skills. If desired and knowledge of the main technological points, everyone is able to cope with this task on their own.

A wooden house is a structure made of logs or beams. The ceiling of such a house is formed on floor beams, which are beams with a minimum section of 100x100 mm. They fit with their ends on the walls of the building and are hemmed from below with ceiling trim. As in any house under construction, the attic floor must be insulated. Therefore, the question of how to insulate the ceiling in a wooden house is still relevant today.

Insulation of the ceiling in a wooden house

It all depends on which side to carry out thermal insulation measures: from below from the side of the room, from above from the side of the attic. Let's consider both options separately.

Insulation on top

This is the easiest option in terms of work.

1. On the beams, floors (across) are laid and any durable panel, sheet or plate materials are attached to them. Most often, unedged or edged boards are used for this (you can even use second-hand). The main task is to lay them so that there are no gaps and gaps between the elements, or there are a minimum of them with minimal dimensions. Note that planks only mate on the floor joists.
2. A waterproofing material is laid over the flooring. You can use roofing material folded in half. Layout should be done in perpendicular directions. That is, one layer is laid along the attic space, the second across.
3. It remains only to lay the insulation.

Choosing a thermal insulation material

Any insulation available on the modern market is suitable for this insulation option. Most often they use plate models: expanded polystyrene plates, mineral wool in mats. You can use expanded clay. Polyurethane foam is very popular today, which is applied to insulated surfaces in the form of foam. It polymerizes under the influence of air, turning into a durable layer with high thermal performance.

By the way, the main characteristic that determines the insulation is thermal conductivity. The lower the value, the better, the smaller the thickness of the material to be laid.

Ceiling insulation technology from above

It all depends on what kind of insulation will be used. If mineral wool or expanded polystyrene plates are used (which is inexpensive), then on a prepared basis it is necessary to make a crate. It's just that wooden slats with a cross section of 50x50 mm are nailed to the flooring every 1 m.

The distance (1 m) is not easy to choose. This is the width of the mat of mineral wool and PP slabs. After all, the main requirement for thermal insulation processes is to create a layer without cracks and gaps, which during operation will become cold bridges. Therefore, the insulation must fit snugly against the elements of the sheathing. If from one of the edges of the structure the step between the slats is less than 1 m, then the insulation is cut to the required width.

Insulation of the ceiling structure outside with mineral wool

It is necessary to approach the insulation of the ceiling structure in a wooden house with polystyrene (expanded polystyrene plates) and mineral wool taking into account the thickness of the heat-insulating layer. Since the thermal conductivity of materials is different, it is recommended to lay mineral wool with a thickness of 100 mm, PP slabs not less than 50 mm. That is, for polystyrene, the laid crate is just right. It will be too small for mineral wool. Therefore, on the installed rails, you need to punch one more on top.

Mineral wool has one drawback - it is a hygroscopic material that absorbs moisture well. Therefore, a waterproofing membrane is stretched along the crate, which will protect the insulation. The strips are laid with an overlap with an offset of 10-12 cm. The laying direction is across the laid load-bearing beams. And after that, boards are stuffed on top, because walking on a mineral wool means crushing it and reducing its strength and thermal performance. In this regard, foam is stronger, plus it does not absorb moisture. But it is not recommended to walk on it either, so you will have to lay OSB boards or plywood sheets on top, or boards.

Thermal insulation of the ceiling from the outside with foam plastic

As for expanded clay, it is simply scattered over the surface of the flooring, after having filled the restrictive elements along the perimeter of the latter. It can be all the same slats, stacked vertically in three rows. The thickness of the expanded clay layer of 150 mm is more than sufficient.

Polyurethane foam is the best of all. But it has two drawbacks:

1. It costs much more than all other materials.
2. For its application, special equipment is required, consisting of two cylinders and a compressor, plus hoses with a nozzle.

Thermal insulation of the ceiling with expanded clay

Before insulating a wooden ceiling with polyurethane foam, you need to weigh the pros and cons. The only thing to add is that manufacturers now offer mini installations. They include two cylinders in which the insulation components have already been pumped under pressure, that is, the compressor is no longer needed. The equipment weighs 30 kg.

Apply polyurethane foam in a small layer (within 2-3 cm). In air, the colloidal mass immediately solidifies and becomes strong. So you can walk on such a warm floor in the attic without fear of damage. In this case, the heat-insulating layer is a continuous coating without seams, gaps.

Thermal insulation of the ceiling outside with polyurethane foam

Economical option

You can save a little on insulation of the ceiling outside. To do this, a rough ceiling is stuffed along the lower edges of the load-bearing beams. Edged boards, plywood sheets, OSB, fiberboard are used. If you look at the ceiling surface from above, then it will be a structure of large cells. They will need to be filled with insulation, having previously laid with a waterproofing material.

The photo below clearly shows how the membrane is laid on the beams, and how the insulation is located. That is, there are no slats in the device of the heat-insulating pie. This increases the space of the attic.

Economical option

If the rough ceiling reduces the height of the lower room, then you can assemble it in a different way. For this, wooden slats are fixed along the lower edges of the supporting beams (along). They are called cranial. It is they who become the supports for the rough ceiling, the materials of which are all the same boards, plywood and other flat materials. The process of warming itself is no different from the technologies discussed above.

Insulation of the ceiling from inside the premises

To begin with, it is impossible to use expanded clay from the inside. Therefore, mineral wool mats and expanded polystyrene plates remain. It is also not recommended to use polyurethane foam in indoor living quarters. This is primarily economically disadvantageous. Secondly, mineral wool and expanded polystyrene do their job perfectly.

Mineral wool insulation

What is the difficulty of the thermal insulation process of the ceiling when using mineral wool. This is the difficulty of keeping it on a horizontal surface. Under its own weight, it simply falls out of the ceiling structure, which is the floor beams.

There are two options. First:

1. On the lower edges of the beams from the end sides, small nails are stuffed in a checkerboard pattern.
2. Insulation is laid between the beams. Its width should be slightly larger than the distance between the ceiling elements. This is done so that the mineral wool is tightly pressed against the beams. In this way, they avoid the formation of cold bridges.
3. Then a strong thread or wire is placed between the studs in a zigzag fashion. It is she who will not allow the thermal insulation material to fall out of the cell on the ceiling.

How can you fix the mineral wool on the ceiling

1. After that, a waterproofing membrane is stuffed along the floor beams with an overlap of the edges within 15-20 cm. It is better if it is with an outer foil side, which, when laid, is directed towards the room. Foil is a material that prevents rays of thermal energy from leaving the space of interior rooms. This will increase the thermal insulation properties of the constructed ceiling.
2. The ceiling is being finished.

Please note that the draft ceiling, which is laid over the floor beams, should be installed only after a vapor barrier film (for example, isospan) has been laid on the beams from above. Its task is not to let moisture pass towards the insulation from the side of the attic, but to allow excess moisture to leave the space between the beams. The most important thing is to properly install the vapor barrier. There are marks on the film that show which side to install the material in the direction of the insulation layer. It is important not to be mistaken here.

The second option is to use mineral wool mats, one side of the panel of which is, as it were, spring-loaded. That is, if you press on it and then release it, then the edge takes its original shape. Therefore, from the side of the materials, a force will act to hold the insulation in a horizontal hanging position.

Warming with expanded polystyrene plates

This option is simpler than the previous one, because slabs of dense insulation can be glued to the plane of the rough ceiling, the elements of which are stuffed along the floor beams. You can glue with any composition: liquid nails, "Moment" and so on.

In addition, it is possible not to use additional protective layers in the form of films and membranes. Although experts assure that they should not avoid penny costs. It is better to pull the film from below. It will not only protect the thermal insulation layer from moisture emanating from the interior of a wooden house, but also wooden floor beams. And this is an increase in their service life.

Protective film for insulation

The only thing that is required from the contractor is to fill in the gaps and gaps between the slabs and beams or between adjacent slabs. Many people use polyurethane foam for this. Not the best option, because foam degrades its thermal insulation properties over time. And a low-quality product is also painted. Better to use sealants.

Penofol insulation

Another worthy thermal insulation material with which you can insulate a wooden ceiling in a private house from the inside. It is based on polyethylene foam covered with a foil layer on the outside. Its thermal conductivity is 0.049 W / m K. It is inferior to both mineral wool and expanded polystyrene. But there is one nuance here. This value is possessed by a material with a thickness of 4 mm. If we talk about expanded polystyrene plates, then their thickness should be 50 mm, mineral wool 67 mm.

1. Along the floor beams with a stretch in the horizontal plane.

Penofol stretched on the ceiling

1. With installation between the beams.

Penofol laid between the beams

1. With the fitting of the floor beams.

Coating the ceiling with foam foam, with fitting of the floor beams

In all cases, a high quality end result can be guaranteed. It's just that in the first and third installation options, it is necessary to overlap the foam strips relative to each other with an offset of 5 cm. The insulation is fastened with self-tapping screws or metal staples using a construction stapler.

1. For insulation of the ceiling in a wooden house, it is better to use mineral wool with a density of at least 40 kg / m³, expanded clay with a fraction of 5-20 mm.
2. Wooden elements of the ceiling structure are pre-treated with antiseptic and flame retardant compounds. First the first material is applied, it dries, then the second is applied.
3. Even the smallest gaps in the heat-insulating layer are cold bridges. They shouldn't be allowed.
4. The insulated construction of the ceiling in a wooden house made of timber is considered to be of high quality if it does not include insulation, which is subject to biological contamination.

As you can see, it is not difficult to carry out the insulation work of the ceiling with your own hands. The main task is to follow the instructions exactly. We did the right thing - we got guaranteed quality.

Builders estimate that 30 to 45% of heat is lost through the ceiling. The conclusion suggests itself: if you want a warm house - insulate the ceiling.

How to insulate the ceiling in a wooden house in order to create comfortable conditions without extra costs and with a minimum of effort? In this article we will tell you about the best materials for insulation and the most economical technologies.

Ceiling insulation in a house with a cold attic can be done according to two schemes: from the inside of the dwelling and outside, by insulating the attic floor. With insulation from the inside, the height of the room will decrease by 10-15 cm, depending on the thermal conductivity of the insulation and the type of filing. You don't always want to lose such a height, and it is much easier to carry out insulation from the attic floor.

If a warm attic is provided in a wooden building, you will have to insulate only from the inside, the roof covering.

Now that you have decided on the insulation scheme, we turn to the choice of insulation.

Choosing a heater

Among the many proposals on the construction market in the segment of heaters, eyes run wide. Comparing materials, we are guided by the characteristics:

Ceiling insulation materials can be of different types:

1. Plates, mats.
2. Bulk.
3. Monolithic styling.
4. Liquid.

Plates and mats are suitable for both external and internal insulation, the rest of the listed ones can be used only for external insulation.

Of the plate heaters, the most often used are expanded polystyrene, polystyrene foam, mineral wool and basalt materials for insulation. They are distinguished by efficiency, low volumetric weight, durability and economy. Among the slabs there are materials of both economy class (expanded polystyrene) and higher prices (penoplex, minelite).

Expanded clay, vermiculite, slag are used as bulk heat insulators, these materials do not burn, are not damaged by insects and rodents, low cost. The disadvantages include low efficiency and high weight, because of this, the insulation layer can reach 500 mm, in connection with which it will be necessary to calculate the bearing capacity of the floor beams.

The same can be said about lightweight concrete of monolithic laying - low efficiency, high weight, but low price, in addition, special equipment is required for laying. Among the materials of this group, we can mention the proven method of warming with a mixture of sawdust with cement milk, which is simple to perform and at an affordable price.

Liquid heaters, which include, for example, polyurethane foam, also require special equipment for styling, with excellent characteristics they have a high price. They differ in the speed of implementation, but it is impossible to recommend these materials for self-installation.

Having chosen the best way to insulate the ceiling, we move on to the next topic: how to properly insulate the ceiling in a wooden house.

We carry out insulation

Before starting work on any of the insulation schemes, it is necessary to impregnate the bearing beams with a fire retardant to increase fire resistance, a fungicide to protect against fungus and an antiseptic that protects against decay, or a complex preparation that performs three tasks at the same time. All elements of wood construction, which will be involved in the insulation of the ceiling, are subject to processing.

Insulation from the inside of the room

In this case, we insulate the ceiling with slabs or mats. For work you will need materials:

• Insulation.
• Vapor barrier.
• Super diffusion membrane.
• A bar made of wood, with a section of 50x100 mm.
• A bar made of wood, with a section of 40x40 mm.
• Moisture resistant OSB or chipboard boards.
• Ceiling stitching material.

The sequence of work depends on the existing ceiling structure: if the existing ceiling is not planned to be disassembled, then a superdiffusion membrane is attached to it with a stapler. Further:

1. Cranial beams with a cross section of 40x40 mm are stuffed onto a beam with a section of 50x100 mm in order to obtain a T-section beam.
2. The resulting T-beams are fixed close to the ceiling to the walls with a distance between them equal to the width of the insulation slab minus 5 mm.
3. Insulation plates are inserted into the resulting frame.
4. From below, a vapor barrier is attached with a stapler.
5. The structure is sewn up from below with plasterboard, OSB, chipboard or clapboard, in accordance with the interior of the room.
6. In the attic, from moisture-resistant OSB, chipboard, or boards, a running floor is made for periodic inspection of the health of the roofing.

The main disadvantage of this scheme is a decrease in the height of the room by a height of 15-200 mm, depending on the required thickness of the insulation.

Insulation of the attic floor from above

This insulation scheme is used in new construction or with free access to the attic in existing buildings.

In this case, you can use both slabs and mats, and bulk materials. For insulation, materials will be required:

• Insulation;
• Vapor barrier;
• Super diffusion membrane;
• A bar made of wood, with a section of 40x40 mm;
• Slab or sub-floor boards;
• Moisture resistant OSB or chipboard boards;
• Ceiling stitching material.

The floor plan looks like this:

Sequence of work:

1. Floor beams (logs) with the help of cranial beams are reduced to a T-section;
2. We lay the subfloor between the beams;
3. We lay the vapor barrier loosely, with access to the wall;
4. We install insulation - slabs, rolls, mats or bulk;
5. A superdiffusion membrane is laid on top;
6. We mount the attic running flooring - boards or moisture-resistant chipboard, OSB.

If the thickness of the insulation, according to the calculation, is required more than the height of the log, before starting work, it is necessary to increase the beams to the desired height.

Overlap insulated with expanded clay.

IMPORTANT: the vapor barrier and superdiffusion membrane must be installed on the wall, forming a closed loop with vapor barrier of walls inside the room and vapor barrier of the roof.

As a vapor barrier, it is possible to use a roofing bitumen-polymer material, but polyethylene film is not recommended due to its low quality and short service life.

Warming with sawdust

According to the above scheme, you can perform insulation with sawdust or wood shavings. This is the most economical way to insulate the floor, although it is inferior in insulating qualities and durability to insulation with mineral wool or expanded polystyrene. Materials required:

• Medium sawdust or shavings.
• Vapor barrier.
• Cement.
• Skull bars with a section of 40x40 mm.
• Planks or slabs on the rough floor.

The sawdust must be of the following quality:

1. Humidity no more than 15%.
2. Age is not less than 1 year.
3. Visible absence of mold and mildew.
4. The average size.

Dilute the cement with water 1 to 10, you should get a liquid cement milk. A mixture of cement and sawdust is prepared in a ratio of 1.5 buckets of milk to 10 buckets of sawdust. The mixture is poured onto a vapor barrier layer and left to dry. The dried layer is covered with a second layer of vapor barrier, then a running floor is arranged.

Summary

Do-it-yourself floor insulation is a simple job, but it will allow the homeowner to keep warm in the house and reduce heating and electricity costs. The cost of insulation will pay off with the comfort of your home. If you follow the technology, safety precautions and the recommendations of the material manufacturers, the work will be enjoyable, and you will be proud to tell your neighbor how to insulate a wooden ceiling.

Insulating the ceiling in a wooden house is not an easy task. The fact is that it is rather difficult to choose the best option. Each material has a number of advantages. Most often, ceiling insulation is carried out using sawdust. This material is cheap and easy to install by yourself. However, experts say that sawdust is a very unreliable material, so it is better to use roll materials.

Undoubtedly, roll materials are the best option for internal insulation. They have a low specific weight, are very practical and durable. It is best to use glass wool as a roll material.

The process of insulating a wooden ceiling using roll material:

1. First you need to nail the nails to the ceiling. However, they should stick out a little.
2. Pull some thread or fishing line over the nails.
3. Next, you need to lay the insulation. It is advisable to install the installation with a partner, since it is very difficult for one to cope with the laying of the insulation layer and pulling the thread.
4. Then attach a specialized tape to the ceiling to act as an anti-condensation material.
5. Drive the nails in deeper.
6. Attach drywall or other finishing material to the ceiling.

During installation work, try to avoid the appearance of gaps. Even small gaps can lead to heat leakage. In addition, harmful condensation can form in large crevices.

Do-it-yourself wooden ceiling insulation outside

If you do not want to insulate the ceiling from the inside, you can insulate it from the outside. Do-it-yourself installation is easy. It is advisable to insulate the ceiling from the outside with foam. This material is durable and easy to install. Mineral wool can be used instead of foam.

Before starting work, you need to clear the attic of various objects. After cleaning, you need to take measurements. It is worth noting that for insulation, you need to use foam sheets, the thickness of which exceeds 5 centimeters.

Insulation with foam is performed in the following order:

1. Cover the entire attic space with sheets.
2. Fill the joints with polyurethane foam.
3. Next, you need to finish the floor of the attic. To do this, you can install a cement screed, which should be poured over the reinforced mesh.

Algorithm for insulating the ceiling from the outside using mineral wool:

• First you need to clean the attic and take preliminary measurements.
• Then you need to assemble the frame for the floor. Do not forget to install the varnishes on the frame.
• After that, you need to lay a waterproofing layer. Glassine can be used as a waterproofing material.
• Lay the rock wool sheets. Avoid gaps as much as possible.

Insulation of the ceiling in a wooden house using sawdust and penofol: a step-by-step scheme

A good insulation mixture can be prepared from sawdust and cement. For installation work, you will need glassine. Any other insulating material can be taken instead. In addition to glassine, you will need a couple of bags of sawdust and cement mortar.

In order for the mixture to serve for a long time, you need to pay attention to the quality of the sawdust. They should be dry and not too small. If there is a moldy smell in the sawdust, it is strictly forbidden to use them.

The scheme of insulation of the ceiling in the house with a cement-sawdust solution:

1. First, treat the wood ceiling with specialized anti-fungal agents.
2. Apply a waterproofing layer over the entire floor area.
3. Mix sawdust with cement.
4. Lay the resulting mixture evenly over the entire area of ​​the ceilings.
5. Compact the solution. To do this, you can just walk around the mixture a little.

Nowadays, penofol is widespread, since this material is inexpensive and easy to install. In addition, penofol has high heat and sound insulation performance.

The process of insulating the ceiling in a private house using penofol:

1. First you need to attach penofol to the surface. To do this, you can use staples or screws. You can fasten the sheets end-to-end.
2. Next, glue the joints of the sheets with tape.
3. Then make a wooden frame using the slats. This design will help avoid condensation.
4. Install drywall on the frame.

Warming a wooden ceiling with polystyrene foam with your own hand

You can insulate the ceiling in a wooden house with expanded polystyrene. This material has the highest thermal insulation values. The disadvantage of expanded polystyrene is its high cost. In addition, this material is highly flammable.

In order to properly insulate the home with this material, stick to the following algorithm:

• First you need to lay the material between the beams. The gap between adjacent tiles should be minimal.
• Fill the joints with polyurethane foam. There should be no gaps, since if they are, the risk of heat leakage increases.
• Cover the ceiling with planks. You only need to do this procedure if you are going to use the attic.

The material on how to insulate the ceiling in a bath can also be useful:

You can also use a crate for insulation, in this case the algorithm will be as follows:

1. First you need to make a preliminary markup.
2. After that, you need to attach a crate made of a galvanized profile to the ceiling.
3. Place polystyrene sheets between the profiles. Fill all seams with polyurethane foam.
4. Hem the panels.
5. If there are gaps on the wall, they must be closed with special ceiling skirting boards.

Insulation of the attic floor with expanded polystyrene (video)

There are multiple options for ceiling insulation. If you have the opportunity, it is advisable to insulate the home with expanded polystyrene. In case your budget is tight, use a mixture of cement and sawdust. Mineral wool is also a good insulating material. It is worth noting that when choosing a method of insulation, you need to pay attention to the evenness of the ceiling. If it has a large number of distortions, it is advisable to insulate the dwelling from the outside with roll materials.