Than to warm the ceiling of the house

Unlike stone, slag wool is produced from blast furnace slags and other wastes of metallurgy. The coefficient of thermal conductivity averages 0.47 W / (mK), which, together with its high hygroscopicity (the ability to absorb moisture), makes slag unsuitable material for insulating ceilings. In addition, it has a residual acidity, because it should be kept away from metal pipes, beams and other products.

  Than to warm the ceiling of the house

Glass wool ranks first in thermal insulation quality among mineral watts – 0.03 W / (mK). It also features a very low price. The disadvantages are the fact that the particles of this material can cause harm to a person getting on the skin, eyes or lungs. But this is more or less characteristic of all types of mineral watts, so when working with them it is necessary to wear gloves, goggles, a respirator mask and closed working clothes.

The main advantage of all types of mineral wool is that this material is very convenient for transportation, carrying and installation, as it has a low weight. In addition, it is non-flammable and at very high temperatures can only be sintered (at the same time losing its insulating properties). And it is especially important for country houses that mineral wool is not an attractive place for rodents, insects, fungi or mold.

The most famous manufacturers of this material are the company “Izover”, “Ursa” and “Paroc”. If quality is important to you, then when you go to the hardware store, look for mineral wool from these companies. When choosing, also pay attention to the density of the material – the ceiling can not withstand too dense and heavy samples of mineral watts.

Start the process of insulation should determine the area of ​​the ceiling, because you first need to calculate how much you need mineral wool, steam and waterproofing films. Next will be considered the technology of the external method of ceiling insulation. If you need internal warming – follow the same instructions, but swap the layers of hydro and vapor barrier.

Calculation of the ceiling area

In addition to the insulation itself, you will need wooden boards or metal profiles, tools for cutting mineral wool, protective clothing and equipment (gloves, respirator and goggles) and fasteners.

  1. First, we put a vapor barrier on the floor of the attic, while ensuring that there are no tears on it. Laying should be overlapped, the seams should be glued with a special vapor barrier tape.
  2. Over it we mount a crate made of wood or galvanized profile. The distance between the slats should be several – a couple of centimeters – less than the width of the sheet or roll of mineral wool. So the insulation will fit snugly. The height of the lathing should exceed the thickness of the heat-insulating layer by 1-2 centimeters in order to subsequently ensure the circulation of air between it and the waterproofing.
  3. We unpack mineral wool and put it in the space between the slats. If the material fits into several layers – the next layer should overlap the seams of the previous one.
  4. From above to the crate with the help of a furniture stapler fasten waterproofing. At the same time, as mentioned above, between it and the mineral wool should be a small space for air circulation.

External insulation of the ceiling with mineral wool

Thermal insulation foam

The second most popular after mineral wool is foam. Foam plastics are polymeric materials consisting of cells filled with gas. That is why the foams well manifest themselves as a heat insulating material. Of these, in everyday life you can often find polystyrene foam and polyurethane foam. On average, the thermal conductivity coefficient of the foam is 0.041 W / (mK), which makes it related to glass wool in terms of its insulating qualities.

Internal insulation of the ceiling foam

Like mineral wool, polystyrene foam and polyurethane foam are low cost and low weight. The latter property makes it convenient to transport, store and install on the ceiling. However, the foam has a number of drawbacks that make it not the best choice for a residential building.

  1. Polyfoam well burns and at the same time releases a lot of hazardous substances to humans. Moreover, they can stand out even with a slight heat.
  2. In the foam layer, mice may start, but it is worth noting that it is not a breeding ground for insects or fungi.
  3. In a room whose ceiling is insulated with foam, a “greenhouse effect” may occur.

There are two ways to install foam plastic – on the frame and on glue. The first one is in many ways similar to insulation using mineral wool, but when laying foam sheets between the slats, “liquid nails” should be applied on their sides. And about the installation of this material with glue should be told in more detail and in steps.

  1. The surface on which the foam will be laid, thoroughly cleaned and cleaned of possible irregularities. If necessary, it can be primed.
  2. Glue is applied to sheets of foam plastic (tile will work well) and after three minutes of waiting, the sheet should be pressed to the surface of the attic or ceiling.
  3. Repeat the procedure with all other sheets of foam.
  4. Apply a layer of reinforcing plaster to the sheets and lay a fiberglass mesh. After drying, the mesh is covered with another layer of plaster.

Thermal insulation of the ceiling foam glue

Penoizol as a heater

An alternative to polystyrene foam and polyurethane foam may be penoizol, which is a “liquid” foam. Thanks to special additives, he gets rid of the main drawbacks of his solid counterparts – attractiveness for rodents and combustibility. The disadvantage of penoizol is that for its application it is necessary to call the brigade of workers with special equipment, and this can be quite expensive.

Warming of the ceiling with penoizol

The technology of insulation using penoizol is simple: we lay a paroizolator and fill the space between the attic beams with a layer of insulation for a thickness of 20-30 centimeters. On top you can additionally lay a layer of roofing material and lay the board floor.

The prefix “eco-” in the title of this material is not for the purpose of advertising. Ecowool is indeed an environmentally safe material, as 80% consists of natural cellulose. The remaining 20% ​​are various additives, such as lingin, giving the structure stickiness, or boric acid and antiseptics that protect ecowool from rotting, fungus and rodents. Also in the composition of this material includes flame retardants, due to which ecowool does not burn, but only smolders under the influence of flame and very high temperatures. The thermal conductivity of the material is 0.038 W / (mK).

Ecowool for insulation of ceilings

There are two ways to insulate the ceiling using environmentally friendly cotton wool – dry and wet. In the first case, the material fits into the prepared “cells” of the ceiling, but at the same time its thermal insulation properties will be only 60-70% of the possible. In the second method, special equipment is used, which moisturizes the ecowool and sprays it under high pressure. Upon contact with water, the insulation becomes tacky and fits snugly to the surface of the ceiling or attic. The disadvantage of ecowool is the fact that for its “wet” application you need special equipment and people who can work with it.

Consider the steps of insulation of the ceiling using ecowool in an external way.

  1. The surface of the ceiling is cleaned and leveled – it is necessary to get rid of dirt and debris.
  2. Mounted crate of wooden bar, similar to the crate for laying mineral wool. If you wish, you can skip this step, but then you will not be able to use the attic.
  3. Lay the layer of vapor barrier film. If necessary, it is possible to wrap the sheathing structure itself.
  4. With the help of the blow unit, ecowool fills the space between the slats. Particular attention should be paid to the cracks and hard to reach places. The minimum layer of insulation should be 25 centimeters, but if you live in an area with very cold winters, then the thickness should be increased to 40-50 cm.
  5. A waterproofing film is laid over the ecowool, overlapped and with seam bonding with a special adhesive tape.

External insulation of the ceiling with ekovatoy

Video – Outdoor attic insulation ecowool

Warming the ceiling with expanded clay

Expanded clay – loose heat-insulating material, which is a stone made of baked clay with a porous structure. It is very popular as a floor insulation, but it is also suitable for ceilings, if they are heated outside. The thermal conductivity of expanded clay is 0.18 W / (mK). Due to its composition, this insulation does not burn, does not smolder and does not melt, does not emit harmful substances into the air and is not attractive to fungus or mice.

But at the same time, claydite is inferior in its insulating properties to foam plastic or mineral wool, and, moreover, is a very dense and heavy material, because it can only be used for sufficiently strong ceilings having support beams.

Warming of the ceiling of a private house expanded clay

The technology of ceiling insulation with expanded clay is as follows.

  1. The floor of the attic and ceiling beams are carpeted with vapor barrier film. Instead of the film, you can use regular thick polyethylene.
  2. The space between the beams is filled with expanded clay. It is advisable to mix the insulation of different fractions, so that the shrinkage is less. The minimum allowable layer thickness is 200 mm; for regions with a cold climate, it is 400-500 mm.
  3. Expanded clay carefully leveled. For this, if necessary, you can even use a simple rake.

The covered clay must be carefully leveled.

  • A second layer of vapor barrier is laid on top of the insulation.
  • The final stage will be laying the floor of the boards or plywood.
  • An alternative to expanded clay among the bulk heat insulators can be foam glass, also often called foam chrome. Its thermal conductivity is 0.08 W / (mK), which is more than two times less than expanded clay (we remind you that in the case of insulation the smaller this indicator is, the better).

    Sawdust as insulation

    Finally, we approached the material that has been used as insulation for decades, even before foam and mineral wool appeared. This is sawdust. They can be used independently, just by filling them in the attic, or as part of a mixture with clay or cement.

    The only advantage of such insulation is cheapness – you can either use the waste from your own construction or go to the nearest sawmill and get the material for free or for a symbolic price. But does the cheapness of sawdust outweigh all their shortcomings?

    1. Sawdust burns well, because when using them, you should protect all electrical wiring in the attic with metal boxes. In addition, you can not use this material near the stove or chimney.
    2. Rodents, insects or fungus can start in sawdust, and without impregnation with an antiseptic it will not work to get rid of these problems.
    3. The material shrinks over time, which significantly impairs its thermal insulation properties. In addition, you have to regularly fill up fresh sawdust.
    4. With such a heater, it is impossible to use the space under the roof – neither to arrange the attic, nor to store old furniture and other things in the attic.

    Warming of the ceiling with sawdust

    Cement-sawdust solution is prepared as follows: for 10 parts of sawdust of small or medium fraction, 1 part of cement and 1 part of lime are taken. The substances are thoroughly mixed together to form a dry mixture. Then you need to take 5-10 parts of water mixed with several tablespoons of blue vitriol. The vitriol in our case acts as an antiseptic, which will not allow the sawdust insulation to rot. Fill the mixture and bring it to a homogeneous mass. Check whether it is ready, easy enough: take the cement-sawdust mixture and squeeze in his fist. If water does not drip from it, then it is ready.

    Using clay with sawdust for exterior ceiling insulation

    Next, you need to prepare the attic for insulation. To do this, you need to lay a vapor-insulating material and treat all wooden elements of the structure with a fire retardant (anti-burning impregnation). After that, you need to lay out the cement-sawdust mixture, smooth it and leave for a couple of weeks so that it is completely dry.

    Important! If necessary, the cement can be replaced with clay. Also remember that cracks may appear in the cement sawdust during drying. They need to be sealed using the same mixture.

    On this review of materials for thermal insulation of the ceiling in the house can be finished. Now, having weighed all the pros and cons, you can choose the heater that is most suitable for you. Below is a table designed to compare the characteristics of insulating materials.

    Table. Comparison of the main parameters of popular heaters.

    The better to warm the ceiling in a private house: expanded clay or mineral wool

    At the beginning of the article we immediately recall the primitive, but long-used methods and methods of insulating the ceilings of private residential buildings.

    Photo – we warm the ceiling from inside the house with your own hands

    Until now, in the attics of old private houses there is thermal insulation using a layer of sawdust. Previously, widely used:

    • hay;
    • onion scales;
    • husk from seeds, scattering it over the entire area of ​​the attic floor;
    • Attic floor could pre-cover with clay.

    What is not ready system of insulation is not high-tech materials?

    Now the straw is impregnated with substances that prolong the life of the material and do not attract rodents.

    More recently, such insulation systems in private homes are periodically damaged by rodents. Later began to use slags, bulk mining of various industries.

    Significant heat loss through the upper surfaces of the premises of the house due to the laws of physics. After all, the warm air rises in them (the law of conversion). There and there are large heat losses, if the overlap is poorly insulated. To keep warm in private housing, it is necessary to reduce the thermal conductivity of the ceiling and roof.

    Heat losses of private houses as a percentage

    Tip! It is better to warm the ceiling of a private house outside. Easier to install, and the main dew point is removed from the surfaces of the dwelling (the farther away the vapor barrier from the surfaces of the dwelling, the better).

    We reduce the thermal conductivity of the ceiling by insulating it with various insulating materials.

    What insulation is better for this purpose? Here the answer is only in the desire and possibilities of the owners of the house. In how correctly and competently from the insulating materials offered on the market to mount the system of insulation of the ceiling.

    Insulation used to insulate the ceiling outside

    Types of insulation used for thermal insulation:

    • Expanded clay;
    • Mineral wool;
    • Ecowool (cellulose insulation);

    Even with a direct effect of fire on ecowool – does not burn, but only melts. And this is an indisputable plus.

    • Foam plastic (penoizol);
    • Polyurethane (polyurethane foam).

    Requirements for ceiling insulation of a private house

    Before finally deciding on the best way to insulate the ceiling of the house, it is necessary to take into account some requirements for the system of insulation of the ceiling of a residential house:

    1. Insulation in this system should be environmentally friendly, harmless to residents. This requirement is extremely important, taking into account the impact on the insulation system of the ceiling of warm air from heated residential premises.
    2. Thermal insulation should not support burning.
    3. Insulation system itself should not be very heavy.
    4. Low ability to accumulate (absorb) and store moisture. This requirement is especially relevant when the roof of the attic of a private house is not insulated (for example, metal roofing material is laid directly on the boards).

    Variants of insulation of the ceiling of a private house

    A very easy-to-install, easy-to-weigh-by-it-is-suggested method of thermal insulation is best suited to the above requirements. An important advantage of this option of ceiling insulation outside is the price. The main thing is that this insulation system has successfully passed the test.

    The materials used for budgetary insulation of the ceiling of a private house outside:

    • Polypropylene film (use “Izospan B” – 1.4 m wide or 1.6 m wide).
    • To make it easier to mount the film and hold it in place, connecting tapes (“Izospan SL” or “Izospan KL”), for a reliable connection of the film to the ceiling surfaces with adhesive tape (“Izospan ML proff”).
    • Expanded clay (or mineral wool).
    • Wooden bars for installing log, horizontal bars for flooring.
    • Screws (screws) for fixing the log to the rafters, bars of the attic floor
    • Covering floor material (for mansards) or asphalt roofing P – 350 (for non-residential “cold” attics).

    We use the film “Izospan” to cover the insulation

    • We measure the area of ​​the attic floor to determine the amount of the necessary material (film, bulk insulation).

    Types of roofs. The size of the attic is respectively different.

    • Based on the size of the overlap, the thickness of the filled layer of expanded clay, we prepare the required number of wooden bars (section of more than 50 x 50 mm) under the logs. We process them with antiseptics.
    • We clean and clean the surface from debris and dirt.
    • Laying lags. The distance between the bars is 40 cm (the extreme bars are fixed, departing from the side beams of the ceiling – 30 – 35 mm). The ends of the bars are sewn to the side bars of the attic with screws, preferably with incomplete threads (with a diameter of at least 6 mm). In the places of contact of the wooden frame construction with attic overlapping we lay pieces of glass roofing P – 350.

    We lay the bars for laying insulation

    • Between the installed lags lay “Isospan B”. In places of joining the film is laid overlapped (15 – 20 cm).
    • We fasten the film between each other with the connecting tape “Izospan KL” or “Izospan SL”.
    • Where necessary, for better adhesion of the film to the lags and the surface of the ceiling, we use the adhesive tape “Izospan ML proff”. This tape allows you to sew the film to any material (concrete, wood) ceiling.

    We cover the construction with film

    • With scissors or cutter we cut the film. On wooden lags do overlap (enough 3 – 5 cm). Cut off the excess film.
    • With a construction stapler (pistol) we sew “Izospan B” to the side surfaces of wooden lags with a pitch of 20–25 cm.
    • Fall asleep between the lags of expanded clay.
    • With a shovel, a rule and a wide plaster trowel, evenly and evenly distribute expanded clay.

    Expanded clay – a heat insulator with decent performance

    • The resulting insulating layer of expanded clay cover. In the attic, residential attic, this is done by any floor covering (tongue-and-groove or deck board, chipboard). In a cold, non-residential attic, on top of the heat-insulating layer we lay asphalt П – 350 (above the pergamin we put paths from boards, for ease of movement in the attic when visiting it).

    On the insulation system of the ceiling of expanded clay put a floor covering (finishing layer)

    Tip!Instead of expanded clay, you can use the slabs of mineral wool. But, it is desirable to install the mineral wool at the warmed roof of the attic.

    Expanded clay or mineral wool

    What insulation is better for the ceiling? What is still better to use as a low-budget heater – expanded clay or mineral wool? After all, both materials are quite cheap insulation. belong to the breathing materials, possess fire resistance.

    Everything depends on the place of installation, ease of delivery of insulation material to the place of installation of the insulation system, the nature and completeness of the climatic impact on the insulation. If we consider the solution of the issue, the better it is to insulate the ceiling of a private house, then it is still better to choose expanded clay.

    The following factors speak in favor of claydite:

    • he is not afraid of water;
    • its environmental component, it will be harmless to residents (there is no synthetics in it).

    The advantages of mineral wool are also obvious:

    • easily delivered to the place of insulation works;
    • it is quite environmentally friendly (but the indicators are worse than those of claydite);
    • also durable and fire resistant.

    But mineral wool, in contrast to expanded clay, has a low moisture resistance index.

    Of course, this indicator of mineral wool can be increased by using special impregnations. But all this only increases the volume and complexity of the preparatory work for the insulation of the ceiling.

    The choice is not critical, especially mineral wool in the attic room will be protected from the direct influence of moisture by the roof, floor covering. But, given the indicators of environmental friendliness, the ability to absorb moisture, it is better to choose mineral wool. The final decision for the tenants of a private house.

    An effective solution is to replace expanded clay, mineral wool with foam glass crumbs. This bulk insulating material:

    • does not burn at all;
    • it is eco-friendly (heating up, does not emit harmful substances);
    • it is not subject to rotting;
    • durable;
    • keeps its volume;
    • frost-resistant;
    • its thermophysical properties are superior to expanded clay and mineral wool.

    cheap insulation. belong to the breathing materials, possess fire resistance.

    Everything depends on the place of installation, ease of delivery of insulation material to the place of installation of the insulation system, the nature and completeness of the climatic impact on the insulation. If we consider the solution of the issue, the better it is to insulate the ceiling of a private house, then it is still better to choose expanded clay.

    The following factors speak in favor of claydite:

    • he is not afraid of water;
    • its environmental component, it will be harmless to residents (there is no synthetics in it).

    The advantages of mineral wool are also obvious:

    • easily delivered to the place of insulation works;
    • it is quite environmentally friendly (but the indicators are worse than those of claydite);
    • also durable and fire resistant.

    But mineral wool, in contrast to expanded clay, has a low moisture resistance index.

    Of course, this indicator of mineral wool can be increased by using special impregnations. But all this only increases the volume and complexity of the preparatory work for the insulation of the ceiling.

    The choice is not critical, especially mineral wool in the attic room will be protected from the direct influence of moisture by the roof, floor covering. But, given the indicators of environmental friendliness, the ability to absorb moisture, it is better to choose mineral wool. The final decision for the tenants of a private house.

    An effective solution is to replace expanded clay, mineral wool with foam glass crumbs. This bulk insulating material:

    • does not burn at all;
    • it is eco-friendly (heating up, does not emit harmful substances);
    • it is not subject to rotting;
    • durable;
    • keeps its volume;
    • frost-resistant;
    • its thermophysical properties are superior to expanded clay and mineral wool.

    cheap insulation. belong to the breathing materials, possess fire resistance.

    Everything depends on the place of installation, ease of delivery of insulation material to the place of installation of the insulation system, the nature and completeness of the climatic impact on the insulation. If we consider the solution of the issue, the better it is to insulate the ceiling of a private house, then it is still better to choose expanded clay.

    The following factors speak in favor of claydite:

    • he is not afraid of water;
    • its environmental component, it will be harmless to residents (there is no synthetics in it).

    The advantages of mineral wool are also obvious:

    • easily delivered to the place of insulation works;
    • it is quite environmentally friendly (but the indicators are worse than those of claydite);
    • also durable and fire resistant.

    But mineral wool, in contrast to expanded clay, has a low moisture resistance index.

    Of course, this indicator of mineral wool can be increased by using special impregnations. But all this only increases the volume and complexity of the preparatory work for the insulation of the ceiling.

    The choice is not critical, especially mineral wool in the attic room will be protected from the direct influence of moisture by the roof, floor covering. But, given the indicators of environmental friendliness, the ability to absorb moisture, it is better to choose mineral wool. The final decision for the tenants of a private house.

    An effective solution is to replace expanded clay, mineral wool with foam glass crumbs. This bulk insulating material:

    • does not burn at all;
    • it is eco-friendly (heating up, does not emit harmful substances);
    • it is not subject to rotting;
    • durable;
    • keeps its volume;
    • frost-resistant;
    • its thermophysical properties are superior to expanded clay and mineral wool.

    Cheap insulation – as one of the ways to save “href =” http://pro-uteplenie.ru/vybor/85-deshevyj-uteplitel “> cheap insulation. belong to the breathing materials, possess fire resistance.

    Everything depends on the place of installation, ease of delivery of insulation material to the place of installation of the insulation system, the nature and completeness of the climatic impact on the insulation. If we consider the solution of the issue, the better it is to insulate the ceiling of a private house, then it is still better to choose expanded clay.

    The following factors speak in favor of claydite:

    • he is not afraid of water;
    • its environmental component, it will be harmless to residents (there is no synthetics in it).

    The advantages of mineral wool are also obvious:

    • easily delivered to the place of insulation works;
    • it is quite environmentally friendly (but the indicators are worse than those of claydite);
    • also durable and fire resistant.

    But mineral wool, in contrast to expanded clay, has a low moisture resistance index.

    Of course, this indicator of mineral wool can be increased by using special impregnations. But all this only increases the volume and complexity of the preparatory work for the insulation of the ceiling.

    The choice is not critical, especially mineral wool in the attic room will be protected from the direct influence of moisture by the roof, floor covering. But, given the indicators of environmental friendliness, the ability to absorb moisture, it is better to choose mineral wool. The final decision for the tenants of a private house.

    An effective solution is to replace expanded clay, mineral wool with foam glass crumbs. This bulk insulating material:

    • does not burn at all;
    • it is eco-friendly (heating up, does not emit harmful substances);
    • it is not subject to rotting;
    • durable;
    • keeps its volume;
    • frost-resistant;
    • its thermophysical properties are superior to expanded clay and mineral wool.

    Penoizol – a modern solution in protecting homes from Russian winters

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    With the help of the video in this article, it can be understood that it is not very difficult to mount the heat-shielding layer outside the ceiling. And you can use this inexpensive and easily accessible material, even cardboard boxes.

    Insulation of the ceiling of a private house from the outside is more justified than from the inside, because of the easier installation of an effective insulation system, as well as in terms of costs (read also about how the insulation of the ceiling is made in a wooden house).

    Sources: http://fb.ru/article/166562/kak-uteplit-derevyannyiy-potolok-v-dome-pravilnoe-uteplenie-derevyannogo-potolka-v-chastnom-dome, http://potolok-exp.ru/ uteplenie / chem-luchshe-uteplit-potolok-chastnogo-d.html, http://pro-uteplenie.ru/mesta/potolok/173-chem-luchshe-uteplit-potolok-v-chastnom-dome

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