How to insulate a frame house with expanded polystyrene and polystyrene foam. Technology for insulating a frame house with polystyrene foam Do-it-yourself insulation of the walls of a frame house with polystyrene foam

Currently, siding is used to decorate exterior walls quite often. Before the siding is installed, the frame should be insulated with polystyrene foam.

Insulation with extruded Penoplex or mineral wool provides frame house a number of advantageous features.

1 Advantages of frame structures

When insulating frames with polystyrene foam, on top of which siding will be mounted, the house frame type significantly improves its performance. This improves:

• Thermal insulation characteristics;
• Noise insulation;
• Vapor permeability;
• Operational indicators.

Based on what the series does protective functions for a heat insulator such as Penoplex, it can be assumed that the insulation frame house polystyrene foam outside or inside would be a rational solution.

The technology makes it possible to consider and continue to use extruded polystyrene foam as an alternative to polystyrene foam to insulate the walls of a frame house from the outside and inside.

For the same purpose, you can use mineral wool or Penoplex. The siding will be able to press the insulation from the inside to the surface of the walls with the necessary degree of accuracy.

To insulate a frame house from the inside with mineral wool, in order to subsequently place siding on the outer surface of the walls, it is necessary to take into account certain rules and recommendations.

In addition, siding provides a reliable level of protection for walls and a layer of thermal insulation. Currently frame structures are highly popular among most private homeowners; the construction of such a house is quite economical and profitable.

The design itself is quite simple, it consists of an installed foundation and a frame placed on it, made using wood.

Further installed frame covered with plywood or OSB boards(similar). It is worth noting that the cost of wood materials used in construction frame houses significantly lower than alternative analogues.

In addition, an already built frame-type house in terms of cost is significantly lower than the same structure erected using stone or brick.

It takes only 14 days to build the walls of such a building. After this, the walls are finished from the inside. The entire structure weighs very little, which does not affect the strength characteristics.

This also contributes to a low load on the entire foundation structure of the building. All this suggests that frame-type houses are reliably protected from sudden subsidence of the foundations, which can lead to the formation of splits and cracks.

2 Features of materials and insulation technology

The process of construction and further insulation of a frame house is not associated with any technological difficulties.

Based on this, it should be concluded that fixing the siding and subsequent strengthening of the walls will be quite simple.

When assembling the frame of such a building, in most cases it is used wooden beam, which subsequently forms the walls of the future house as during installation.

In most cases, such a building is lined with clapboard from the inside, after which work directly related to insulation begins.

First, the surface of the walls is covered with a sheet of thick plywood. This happens indoors.

Upon completion of these works, they begin the process of insulating that part of the building, which is called the facade. When implementing such an approach, additional niches may appear in some walls, which are created due to the fact that rack beams are used during construction.

Next, all such niches are insulated with foam plastic. Finishing of internal surfaces is done first, as this is necessary preliminary stage associated with the process of insulating the facade of the building.

Without this, it is strictly prohibited to continue further work (including installation of siding). When covering the internal frame, the owner receives ready-made solution in order to install insulation.

Before implementing this type of work, it is worth taking into account that the wall insulation scheme for a frame house consists of a number of elements. They are presented as:

• Load-bearing wall;
• Lathing;
• Thermal insulation layer;
• Air gap;
• Membranes;
• Siding.

Polystyrene foam is not presented as an environmentally friendly and harmless material. This insulation is characterized by ease of installation; it can be cut very easily.

However, the foam is different high degree ease of use. The presented insulation has a porous structure, which is formed from large quantity cells independent of each other.

Expanded polystyrene has a low specific gravity and is characterized by high thermal insulation properties, mechanical strength and high fire resistance parameters.

Polystyrene foam is one of the highest quality thermal insulation materials. It perfectly combines price and quality parameters.

Extruded polystyrene foam boards have high strength characteristics and are distinguished by a dense closed cellular structure.

All plates are produced using the extrusion method, and at the final stage of production, a special foaming reagent is added to the melted polystyrene.

It is worth noting that extruded polystyrene foam has a low thermal conductivity coefficient. This material is not capable of absorbing moisture and has increased compressive strength.

During production, special composite materials that are in the area high pressure. It is relevant to use fire retardant additives, dyes and all kinds of foaming additives, which are necessary for the formation of gas in the internal structure.

You can start installing siding at almost any time of the year. When installing siding, you need to pay attention to the air temperature; it should not fall below -10 degrees Celsius.

This is due to the fact that vinyl can easily crack when the temperature drops during installation work.

All stages of work associated with insulating the facade of a frame house are carried out in parallel with the installation of sheathing on a brick or stone wall.

A layer of sheathing helps hide obvious defects or unevenness on the wall surface. In order for the insulation to be securely attached to the outer surface of the wall, you first need to assemble the sheathing, which is presented in the form of a frame.

The frame structure itself can be made using timber beams or galvanized metal profiles. Metal sheathing, unlike wooden ones, will last much longer.

Frame house construction is sufficient promising direction in the construction of private houses. They do not require powerful foundations and are easy to install. The construction of a frame house will require much less financial investment than the construction of a brick building. To ensure that savings do not end at the construction stage, it is necessary to think in advance about ways to preserve heat indoors. One option would be to insulate a private frame house with polystyrene foam.

What is expanded polystyrene

Expanded polystyrene is a foam material of artificial origin. There are two types of polystyrene foam for do-it-yourself insulation of walls and other building structures:

1. Styrofoam;
2. extruded polystyrene foam.

As the most affordable option Foam can be used for thermal insulation. It consists of small balls with a cavity filled with air inside. Air is one of the most effective insulation materials, only inert gases prevent heat loss better. Do-it-yourself insulation with expanded polystyrene allows you to achieve excellent results thanks to the following characteristics material:

• availability and low cost;
• high thermal insulation characteristics;
• resistance to biological effects (mold, fungus);
• ease of working with the material and installing it yourself;
• the material does not shrink over time;
• safety for humans.

• low strength (additional protection of the foam from mechanical stress is required);
• instability of the material to high humidity at low temperatures, can easily crumble into individual balls;
• instability to fire.

All these shortcomings are compensated by the low price of the material, but it is possible to take them into account and reduce the negative manifestations to zero.

Wall insulation

Insulation scheme with curtain façade: 1 – interior decoration; 2 – vapor barrier; 3 – frame stand; 4 – expanded polystyrene; 5 – siding; 6 – vapor-permeable moisture-proof membrane.

Insulation of a frame house with polystyrene foam in this case is carried out between the frame posts. After that, sheathing is done on both sides. Work is carried out in the following order:

1. frame processing: cleaning from dirt and dust, eliminating unevenness, removing unnecessary sharp objects;
2. laying a waterproofing layer with outside walls;
3. laying insulation;
4. laying a vapor barrier layer;
5. wall covering.

When using polystyrene foam there is no need to install a ventilated façade, unlike the equally popular mineral wool.

Option with using OSB as water and wind protection

Waterproofing is installed to protect the wall material from moisture penetration from the outside. When building a house with your own hands, you can use the following as a waterproofing layer:

• plastic film;
• modern moisture-proof, vapor-permeable membranes;
• OSB-3.

The waterproofing material is laid with an overlap of 10 cm, the joints are sealed with a special tape. Manufacturers present polystyrene foam as a material that has a low degree of water absorption, but it must be remembered that in winter it can collapse if exposed to moisture.

To prevent this unpleasant phenomenon, it is necessary to provide waterproofing of the walls.

Additional insulation foam outside

It is important to remember that waterproofing is always located on the cold air side (when insulating walls from the outside), and vapor barrier on the warm air side. Polyethylene film can be used as a vapor barrier for walls.

Insulation of floors

There are several options for using polystyrene foam:

• insulation of floors above a cold basement or technical underground;
• insulation of attic floors in the presence of a cold attic;
• increasing the sound insulation characteristics of interfloor ceilings.

In the case of a frame house, the material is laid between the joists. When using extruded polystyrene foam, insulation under a reinforced cement-sand screed is possible.

When insulating floors with your own hands using polystyrene foam, it is important to correctly observe the order of layers. In the floor structure of the first floor, waterproofing is first laid, followed by foam plastic, and a vapor barrier on top. For interfloor and attic floors, the vapor barrier and waterproofing layers must be swapped.

Insulation scheme attic floor

As a compromise between price and quality, you can use polystyrene foam insulation in the following form: a main layer of foam is laid inside the floor pie, and a layer of extruded polystyrene foam of small thickness is laid on the outside. This will increase the strength of the insulation layer without large financial costs.

Insulation of attic roof

The order of layers when insulating the attic

When building a private house, the option of using the under-roof space as an attic is becoming increasingly popular. In this case it is necessary to ensure comfortable conditions stay and reliably protect the room from the cold. Basic heat losses occur precisely through the roof, so sufficient attention must be paid to its insulation.

In the vast majority of cases, polystyrene foam is placed between the rafters. Fastening is carried out using adhesives and special nails to the rafter legs. The bottom sheathing acts as additional reinforcement.

The thickness of insulation in the main territory of the country will be in the range of 150-200 mm. It is important to remember that the height rafter legs cannot be taken less than the thickness of the insulation layer. In the case of polystyrene foam, a ventilated air layer is not necessary. To protect structures and foam from negative internal and external influences The following materials are used:

• vapor barrier;
• waterproofing;
• wind protection

As the second and third layers, modern moisture-windproof membranes can be used, which are mounted outside the heat-protective material.

Installation technology

The main difficulty when working with polystyrene foam is maintaining the exact spacing between the slabs of the material. Expanded polystyrene is subject to thermal expansion; it is to compensate for this that it is necessary to provide small gaps. The joints of the plates are glued with a special adhesive tape, it can also be foil tape.

Fastening to the surface from the outside and inside can be done using adhesives or dowels. The latter provides reliable connection, but violates the integrity of the layer. When using expanded polystyrene adhesive composition Several requirements apply, but one of them is the most important: the glue must not contain chemically aggressive components. The taboo applies to:

• acetone and other solvents;
• petrol;
• kerosene;
• formaldehyde;
• formalin;
• toluene;
• benzene;
• aggressive resins.

Insulating a frame house using polystyrene foam is a simple but effective measure that does not require large financial costs. With its help, without special training, you can insulate walls and other structures. Long term The service of the material will allow you to forget about the problem of heat losses for a long time and significantly save on heating a private home.

Insulating a frame house with polystyrene foam is a common method of thermal insulation of residential and industrial buildings. The second most commonly used material after mineral wool. Popular due to low thermal conductivity and low cost.

Heat loss of frame houses

Foam plastic is a material consisting of foamed cellular plastic masses. Because of great content gas has a low density and low specific gravity. Common types in everyday life are: non-pressed and extruded polystyrene foam.

Advantages and disadvantages

The advantages include:

• high thermal insulation performance;
• low coefficient of moisture permeability;
• good sound and noise permeability;
• light weight;
• Suitable for work outside and inside the house.

There are a number of disadvantages:

1. Susceptible to destruction from exposure to chemical liquids. Therefore, when finishing works we need to take this into account.
2. When burned and heated, toxic substances are released. It is worth choosing carefully when finishing interior spaces, facades.
3. Subject to mechanical stress.
4. Vapor permeable. Drops settle inside and, when frozen, destroy the material.

In construction it is used as heat insulating material For . It has found its application in the creation of structural and decorative parts - arches, false fireplaces.

Video: choosing foam

Kinds

Based on their structural structure and method of application, polystyrene foam is divided into types. There are:

• tile expanded polystyrene (PPT);
• pressless self-extinguishing foam plastic (PSB-S);
• penoplex - improved foam plastic;
• penofol - roll thermal insulation material;
• liquid – urea-formaldehyde polystyrene foam.

All types are classified according to the principle of use and application specification.

Density and markings

To distinguish types of polystyrene foam, markings with letters and numbers are used. For pressed foam - PS, for non-pressed foam - PSB. The numbers following the letters indicate the density of the material.

The main brands of pressless foam:

1. PSB-S-15. Due to its low density (15 kg/m³), the material is used in cases where there is no special requirements to rigidity.
2. PSB-S-25. A common thermal insulator for building insulation. High density, long service life.
3. PSB-S-35. Thermal insulation of foundation, pipeline.
4. PSB-S-50. Highest density. Mainly used in the construction of industrial enterprises.

Thermal conductivity of the material and level of fire resistance

The thermal conductivity of a material directly depends on its density. The higher the density, the less heat loss. Let's look at this ratio in the table.

Watch the video: testing expanded polystyrene in practice.

The fire resistance of a material can be determined by its marking. PSB-S foam contains fire retardants, so the material does not support combustion and will not ignite. The letter C in the marking means self-extinguishing.

Mixtures and fasteners used for foam insulation

Construction markets offer various mixtures for foam fastening. Main types of fastening:

• adhesive mortar based on cement mixtures;
• plastic dowels.

Popular types of mixtures:

1. Mapei.

The mixture can be applied in several ways, it all depends on the surface to be insulated. Main types of application:

• continuous – with differences on the insulated surface of up to 5 mm;
• applying stripes over the entire area;
• point, up to 5 points over the entire surface (differences over 10 mm).

To secure the slab, secure it with plastic dowels.

Calculation of the required amount of foam

• slab size;
• insulated surface (floor, ceiling, walls);
• foam thickness;
• area of ​​the insulated surface.

Be sure to take heat resistance into account. It is different for each region.

Floor insulation technology

For thermal insulation, you need to install beams on which the floorboard will be laid. When choosing a material, consider the density. It must be at least 25 kg/m³. Basically, four methods are used to insulate floors in a frame house:

• laying insulation under rough screed;
• installation on sand or prancing;
• laying foam on a layer waterproofing material;
• floor insulation along joists.

Let's consider each method in detail.

Under the rough screed

In this case, one layer of insulation consists of three sheets of foam.

1. A layer of waterproofing is laid.
2. Install a damper tape around the perimeter.
3. Glue the slabs together and lay them on a waterproofing layer.
4. The insulation is covered with a vapor barrier material.
5. Pour a rough screed over it. The layer thickness is at least 7 centimeters.

On the sand or prancing

Apply a layer of wet sand or sandstone evenly to the foundation. Lay insulation boards on top. To ensure that the installation is even and dense, cut the foam into pieces measuring 20 x 30 cm. Install beacons on the laid insulation and apply a finishing screed. The disadvantage of this method is that the slightest irregularities will cause the screed to “play.”

On waterproofing film

Most non-standard way. Place waterproofing film between the beams, and lay foam sheets on top of it. Then another layer of waterproofing. Cover the entire surface with boards.

Insulation by joists

This method can be used to insulate floors during construction and in a completed building. They use the method of dividing into rough and finishing floors. Stages of work:

1. Lay boards on the floor beams. They must be treated with an antiseptic solution and covered with a metal mesh on top. This will protect the house from mice.
2. The next step is a layer of wind protection. Fasten with construction stapler to the lags.
3. Lay a layer of insulation. It is better to combine two types - mineral wool and expanded polystyrene. Mineral wool is laid on top foam boards. For ventilation, the gap between the thermal insulation and the finished floor boards must be at least 50 mm.
4. Seal all joints polyurethane foam.
5. Last layer - vapor barrier film. You can lay a finished floor on top of it.

To reduce humidity, underground space cover with a layer of sand and expanded clay.

Foam insulation is one of the simplest and most well-known preparation methods for both temporary and permanent residence V country house. Let’s try to figure out how to properly insulate a frame house with this inexpensive, popular material, and at the same time we’ll discuss some prejudices against its use that many developers and specialists currently have.

Main characteristics of polystyrene foam

Frame-panel house – optimal design for the most high-quality insulation. Thermal insulating material that is placed between the racks frame block, provides maximum protection against freezing of the inner surface of the walls and protects them from destruction. When using polystyrene foam, in addition to a low price, the following are provided: important advantages, as convenient processing, resistance to moisture, ease of installation and lack of shrinkage.

Along with this, one can often find negative opinions regarding this insulation, which boil down mainly to the following statements:

• Mice eat him. In fact, no rodents feed on foam plastic; they make their nests and passages to them in it. In this sense, polystyrene foam is no worse (and no better) than other materials;
• It's flammable. For a frame house made of wood, this is not critical. In addition, the production technology of modern foam plastic involves the addition of special fire-resistant additives;
• He highlights harmful substances. This serious misconception can most likely be attributed to mineral wool, while foam plastic from this point of view is absolutely harmless;
• Insulate with polystyrene foam frame-panel house impossible, because it allows cold to pass through the joints. If handled ineptly, this is indeed the case. However, the correct placement of the slabs inside the walls and their processing at the joints will ensure a minimum of heat loss.

Thus, the effect that can be obtained from insulating walls and other cold-permeable parts of the house largely depends on compliance with the rules for handling this material and protecting it from harmful influences during its entire service life. We'll talk about this in the next section. In the meantime, watch a video about the properties of polystyrene foam, which in the industry is more often called expanded polystyrene, and the features of its production:

Wall insulation

Most often, polystyrene foam in a frame house is used to insulate the surface of the walls between the studs and the sheathing on both sides. This is done as follows.

Pre-cleaning and sealing

Insulating a frame house with polystyrene foam always begins with processing the frame itself. If this is not done, then even the most careful installation of thermal insulation material will not help to avoid thermal losses through the air channels remaining at the joints.

Despite the fact that foam insulation technology involves high processing speed even large areas As one of its main advantages, the preliminary steps must be carried out very carefully.

All bumps, nails and other protruding sharp objects must be removed. Existing gaps and cracks must be filled with polyurethane foam. If during the construction stage the wood was exposed to moisture, we treat the damp areas with a construction hairdryer.

As a result, the frame should be a dry, even and airtight structure, ready for laying insulation.

Waterproofing

The waterproofing layer is laid with outside walls and protects them from moisture and wind. Many experts claim that polystyrene foam does not absorb moisture at all, so it is possible to insulate a house with it without external insulation. However, dampness and humidity that penetrates into the frame when negative temperatures, can freeze and destroy the insulation material and walls.

Typically used as waterproofing:

• glassine;
• plastic film;
• modern membrane coatings.

The waterproofing material must be laid with an overlap of one row over another (about 10 cm) and taped with a special tape.

Laying foam

Sheets of insulation are laid in the opening between the frame posts and secured in it:

To insulate a frame-panel house with maximum quality, it is better to use three layers of foam plastic, each 5 cm thick, laying them on top of each other and overlapping the joints in the previous one with the next layer. The joints between slabs within one layer must be coated with professional frost-resistant polyurethane foam.

One of the most important parameters that must be ensured when insulating walls with foam plastic is the size of the gaps between the plates. The fact is that the insulation of a frame house undergoes expansion and contraction as the outside temperature changes. Correct location the slabs will not allow them to warp when expanding and affect the outer cladding.

More details about laying insulation during heat treatment of walls can be seen in the video:

Vapor barrier and wall cladding

WITH inside a vapor barrier film is laid on the walls. It protects the insulation layer from excessive moisture due to condensation. Most often, foil materials (penofol) or special membrane films are used for these purposes.

Please note - all seams must be foamed

External cladding can be installed directly over the waterproofing. A ventilated façade is not required when insulated with foam plastic. Interior finishing is done in a similar way; if it is necessary to pre-plaster the surface, a reinforcing mesh is used.

Floor insulation

In a frame house you definitely need good quality. The technology for constructing the “pie” here is the same: waterproofing at the bottom, then a base of bars nailed to the edge of the joists, foam plastic and a vapor barrier film. As the latter, you can also use penofol, laid with foil down. In this position he will protect floorboard from dampness and will not allow heat to escape from the room.

Insulation of the under-roof space

A frame-panel house most often has a pitched roof, under which there is cold attic. The easiest way to insulate the ceiling and roof is by placing sheets of foam plastic between the beams in the same order as for insulating walls. No less important here is the correct foaming of all joints - warm air always rises upward and strives to escape through all sorts of cracks.

The methods of working with polystyrene foam that we have described irrefutably indicate that insulating a frame house with your own hands is quite an accessible and interesting task. We hope that these tips and videos will help you make your home warm and cozy and calmly survive the most severe frosts.

In order for the house to be warm, it must be properly insulated. This can be done different ways– synthetic wool, stone wool, polystyrene foam, polystyrene foam and others. Let's find out how to insulate a frame house with polystyrene foam.

What types are there

Foam-based insulation is divided into several types. They all have similar characteristics, but are fixed to the walls in different ways.

• penoplex
• expanded polystyrene
• penofol
• liquid foam
• foam itself

At the same time, the foam itself differs in density and function: there is foam for walls, and there is for the base and foundation.

Let's look at the difference in foam density. The higher the density, the correspondingly best characteristics it has thermal insulation. The standard density of foam plastic is usually in the range from 10 to 35 kg/m3. Thus, foam grades are designated PPT 15 (i.e., with a density of about 15 kg/m3), PPT 20, PPT 25 and PPT 35.

Please note that each of these brands differs in price and also has its own scope of application. For example, PPT 15 is too soft, its density is low, so it cannot be used for floor insulation. Although the most universal brand PPT 35 can be used everywhere without damaging the foam, its price is higher than the others, so it would be irrational to insulate walls from inside the room - it is too expensive. The denser the foam, the better it retains its shape, but less dense foam is marginally warmer.

Thus, PPT 15 is used for roof insulation, PPT 25 for insulating walls and vertical surfaces, and PPT 35 for floor insulation.

How to insulate walls

Polystyrene foam is traditionally used to insulate the walls of a frame house, but it is still better to use it to insulate the house from the outside, since the technical smell that foam boards emit disappears from the room in at least a week. In the first week after insulating the walls inside the house, residents may experience headaches and disturbed sleep.

What you will need to prepare the walls for insulation:

• hammer drill
• grater
• paint brushes
• bucket or other container for diluting mixtures
• spatulas
• needle roller
• hammer

To fix the foam, you need to make a flat wall surface, for which we remove old finishing. After cleaning the wall from dirt, dust and other coatings, make sure that when applying the foam sheets there are no recesses or air spaces left. The foam should fit tightly to the wall. If the quality of the walls leaves much to be desired, it is necessary to prime them. To do this, use a brush or spray.

Using a needle roller, we roughen the surface of the foam board.

Important: we start gluing the insulation from the bottom, for which we install a starting strip. This strip will act as a support for the first sheets of polystyrene foam, and will help to install them evenly.

Using a spatula, apply the adhesive mixture to the insulation, then press it to the surface of the wall and press it with your palm. You cannot use hard things that will damage the foam - only your palm. After installing the insulation, check for dents, cracks or damage.

We continue to insulate all the walls in the same way, trying not to leave gaps between the foam sheets. When the work is finished, it is necessary to use special plastic nails, which experts call mushroom. This mushroom consists of a plastic circle and a sleeve-leg. Hammer a nail into the sleeve, which is preferably plastic, this will avoid cold spots.

The fungus is attached thanks to holes made using a puncher. The length of the holes should be larger size fungus by 20 mm. On average, one sheet of polystyrene foam takes 5 fungi.

Fungi are located at the joints of the slabs, additionally pressing the foam sheets against the wall. Make sure that the caps are level with the insulation, and after hammering the nails, they are heated by 1.5-2 mm. If, after insulating the wall, gaps of 5 mm or more remain between the sheets, they must be additionally foamed.

Subsequent wall finishing

How to do interior finishing after foam plastic? So, you have glued all the foam sheets to the wall, foamed the joints and waited for them to dry. Next, you need to cut off the excess foam and check the wall for defects.

If some parts of the insulation stick out, they can be smoothed using a grater. This is especially true for unevenly protruding places in the area of ​​joints.

Use a spatula big size, and apply the adhesive mixture to the entire wall. Make sure that the glue is applied evenly.

Paste plaster mesh to the insulation. Since the glue dries quickly, we cut the mesh in advance to a size of approximately 100x100 cm. A large mesh may not have time to securely fix it. After the entire wall is covered with mesh, you can begin to apply the leveling layer. The layer should be about 3 mm thick, for this we also use large spatula. After drying, grouting is performed to remove unevenness. The next layer is a special primer and a finishing coat. About the methods interior decoration premises read .

How to insulate a floor

Polystyrene foam has long been used for floor insulation, as it consists of millions of small polystyrene beads that retain air inside. At the same time, it is not afraid of moisture and does not change its properties. long time, and has a suitable density (PPT 35) to withstand floor loads.

In this case, foam insulation is carried out without special effort and knowledge, anyone can do this - even not a professional.

To begin with, as with insulating walls, it is necessary to prepare the surface for the heat-insulating material. To do this, we clean it, seal cracks, insect passages, crevices, holes through which rodents can enter the house. Next, we lay a thick film on the floor, which will provide waterproofing. This layer will prevent water from getting inside the insulation. We lay the film with an overlap, which should be at least 10 cm, and glue the joints of the film with construction tape. Modern membrane films not only do not allow moisture to pass through, but also have water-repellent properties, while they also return heat to the room.

We lay sheets of foam plastic on the film. It is better to use with profiled edges, which help to avoid cold bridges. Foam the joints, as the fixation of the slabs must be reliable. If the sheets are not foamed, after a while the sheets will rub against each other with their edges and make noise. unpleasant sounds. Sometimes, to avoid squeaks, it is proposed to deliberately leave a space between the plates of 5 mm, which is then foamed.

We lay another layer of waterproofing on top of the foam, which will help prevent water from penetrating into the floor if something is spilled on the surface.

Next we perform the laying metal mesh and do the rough screed. We apply the cement so as not to damage the film and move the insulation. Its layer should be at least 5 cm. Next, you can make the finishing floor.

If your frame house has had cement strainer on the ground, insulation with foam plastic is carried out as follows? We lay the film on the cement, then use dowels to attach the foam and treat the joints with foam. Useful information You will learn how to make heated floors in a frame house in our article.

Remember: if there is a basement, it is better to insulate the floor in the house from the basement side. In this case, an additional layer of air is formed, and the floors will be warmer.

If you are insulating without a basement, do not forget that the surface on which the sheets are laid must be prepared. The screed must be perfectly flat; for this we use a mesh.

We insulate external walls and basement

Most often, foam boards are used for external insulation Houses. Since it is not afraid of moisture, it is therefore preferable to use it instead of mineral wool. As we know, frame wall consists of several layers, and its last layer– OSB board.

It is best if the work is carried out in the warm season, since frosts worsen the properties of the glue and the insulation boards will not adhere well. We attach the foam in the same way as we attached it to the wall. We use dowels after we have glued several sheets. They securely fix the sheets. And you can be sure that when the adhesive expires, the sheets will not come off.

To insulate the base we use 10 cm polystyrene foam, since the base is the coldest part of the wall. We process the base using reinforcing mesh cement mortar. When the cement is completely dry, you can begin exterior decoration. The most commonly used material is plaster. If you have chosen lime plaster, it is necessary to add cement of a grade of at least 400 to it. We process the wall in two layers without intermediate grouting. We read about finishing the facade after insulation.

Making the roof warm

Since the roof also needs insulation, foam plastic can be used for it, and PTT 15, the softest and most inexpensive, is suitable. The fact is that there is almost no load on the roof. However, it should be remembered that stiffer and denser foam will last longer.

Polystyrene foam is suitable for insulation of both inclined pitched roofs, and straight. In addition to the fact that polystyrene foam is not afraid of moisture, does not rot or deteriorate, it has high thermal insulation properties, it is lightweight, which is especially important when building a frame house. At the same time, foam sheets are easily cut and fixed with glue. They have good soundproofing properties, thanks to which during rain the noise from drops falling on the roof will be minimal.

How is insulation material installed?

The whole process can be divided into stages:

1. Laying waterproofing material on rafters.
2. Fastening foam boards between or under rafters.
3. Sealing the seams with polyurethane foam to eliminate cold bridges.
4. Laying vapor barrier indoors.
5. Finishing interior walls and attic ceiling.

Foam plastic slabs are usually laid in the space between the rafters, and the laying should be tight, without cracks. To adjust the size, the foam is cut using a sharp knife along a ruler and broken along the cut. The sheets are fixed to the rafters using slats or polystyrene glue. Fastening with glue may not be sufficient, so it makes sense to make a binder from a board. This design should hold the slabs in several places. The resulting voids between the foam board and other elements are foamed.

How to insulate a frame house mineral wool, read our article.