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Who is involved in insulating houses with liquid polystyrene foam? Insulation of walls with liquid foam plastic. Internal insulation of wall structures

To insulate a building from the inside and outside, repairmen use liquid polystyrene foam (also known as penoizol). This is a relatively recent technology that has become widespread due to the high thermal conductivity and durability of the material. How to use the liquid substance and what will you need for insulation at home?

Three types of liquid foam

Varieties of liquid foam do not differ from each other chemical composition, but the production containers in which they are produced. The scope and complexity of application will depend on the packaging.

Professionals use industrial liquid foam. To mix it, you will need a special installation, which costs over 20,000 rubles. Such a machine allows you to simultaneously mix the composition to a homogeneous consistency and ensure its supply under pressure. It is not worth buying a special unit for one-time insulation. It is better to rent it or use other insulation modifications.

To the second industrial version refers to liquid foam in cylinders. The kit includes two components: a container with a paste mass and a catalyst. When mixed, they form an insulating mixture, which is distributed under pressure. The cylinders are reusable and easy to recharge.

The simplest option, which is convenient to use at home to perform medium and minor works, – household penoizol in cylinders. For distribution porous material use the dispenser included in the kit or a construction gun.

Advantages and disadvantages of penoizol

Liquid foam plastic has several main advantages, which is why modern installers choose it for insulating private and industrial buildings.

Fine-cell structure. Penoizol is a breathable material. It does not create condensation on the surface of the walls, passes moisture through the porous layer and removes it outside. This property of the material allows you to avoid the formation of fungus even with any coating.

Fire safety. Liquid foam belongs to the moderately flammable class G2. In the solid state, the material does not burn, but chars, and no molten or toxic substances are released during combustion. This unique property gives liquid foam another point compared to other insulation materials.

Resistant to temperature and humidity changes. After complete polymerization (hardening), penoizol does not change its structure, regardless of weather conditions and indoor microclimate. Thanks to this, the service life of the insulation ranges from 50 to 80 years.

Noise insulation. The middle layer of penoizol, 5–7 cm thick, reduces the noise level transmitted to external environment 3 times, and inside the building - 2 times.

Availability of material at a price. Average cost of one household cylinder with dispenser – 500 rubles. One cylinder is enough for 6–10 m2 of fastening insulation boards.

Lack of surface preparation. There is no need to grind and clean the walls, which significantly saves time and financial costs on purchasing special equipment for preparatory work.

Laying a 10 cm layer of liquid foam along thermal insulation properties corresponds to 0.2 m mineral wool; 0.3 m of ordinary foam; 0.35 m of wood 4 0.9 m of brick and 2 m of concrete.

However, this material also has back side medals to consider:

• reduced mechanical strength;
• deterioration of the quality of the material when exposed to moisture;
• releases a small amount of formaldehyde, maintaining an unpleasant odor for several weeks;
• shrinkage of the insulating layer by 1% after hardening in frame walls.

Pouring industrial foam into cylinders

Liquid thermal insulation foam consists of urea resin, a catalyst-hardening agent, a foaming agent and water. Additionally, modifiers and additives are introduced that improve the ductility and other characteristics of the material. The process of mixing and transforming into a homogeneous mass takes place under the influence of compressed air in a special apparatus for foam insulation. Purchasing this unit for home use It is only advisable when carrying out large-scale or regular work. Alternatively, the device can be rented.

Typically, craftsmen purchase reusable cylinders with liquid foam. The contents are thoroughly mixed to get rid of air layers and allow the active composition to be distributed as densely as possible over the surface. An important point when using liquid foam in cylinders is the temperature of the working mixture. The optimal temperature for application is 20°C, at lower temperature indicators it needs to be heated in warm water. Attention, the heating temperature should not exceed 50°C, and in the summer the cylinder is cooled to the minimum level regulated by the manufacturer.

There are three filling options:

1. 1. If the free space between the walls is up to 5 cm, the insulation is poured in drilled holes diameter 32 mm. Perforation of the wall is carried out in a checkerboard pattern at a distance of 1 m from each other. A hose (d=30 mm) is inserted into the hole. The foam-like composition is supplied under pressure, filling the cavities until it begins to leak through the adjacent hole.
2. 2. Filling walls with insulation in new buildings is done by filling the cavity with foam insulation in several layers.
3. 3. For frame houses, as well as cavities between the wall and plasterboard partition the insulation is distributed from bottom to top.

After finishing the work, the liquid foam leaves no voids and completely fills the depressions and small cracks. Initial degree The insulation hardens within 20 minutes. Example, after 3–4 hours it becomes stronger, it finally polymerizes after 2–5 days, and after a month it completely gains and stabilizes its solid form.

Household composition with dispenser - heat insulator and glue in one bottle

The most popular among amateur craftsmen is liquid foam with a dispenser, which is easily applied with your own hands using the principle of polyurethane foam. The first thing the work begins is surface preparation. Complex manipulations are not required, but it is worth performing several procedures for better adhesion of the material to the surface. We remove dust and dirt; a hose with good water pressure will be enough. It won't hurt to degrease the surface either. After removing dust, there is no need to dry the walls; they should remain damp. In this case, tight contact of the liquid foam with the base will be ensured, and the material will harden faster.

Amateur craftsmen often purchase bottles with a dispenser

The next important point is preparing the cylinder. It must be shaken several times and heated to the desired temperature specified by the manufacturer. This way you will achieve complete connection active substances, uniform and dense distribution of the composition over the surface.

The further process of work is not much different from the technology of applying polyurethane foam. The composition is distributed through the dispenser included in the kit, or using a construction gun. If voids appear, the container should be shaken periodically to get rid of air pockets. Excess liquid foam can be easily cut off after polymerization sharp knife, as is the case with polyurethane foam.

Penoizol is used not only for thermal insulation, but also as an adhesive for tile insulation (but not for mineral wool). The sequence of work in this case is as follows. We check the slabs for rust and defects, if any errors are identified, we eliminate them and clean the surface from dust. We thoroughly moisten the places of contact of the liquid foam with the base with water, and for convenience, use a sprinkler. There are two ways to apply the adhesive. The first option is to distribute the foam mass over the entire surface. The second is along the perimeter of the slab and diagonally. In practice, both options are used, however, in the second case, the adhesion will be lower, but the material consumption will be more economical.

At the end, without waiting for drying, the slab is pressed tightly against the insulated wall. During further installation, the composition is applied not only to the base, but also to the tile joints to ensure maximum fixation. Optimal time For working with penoizol, the period from May to November is considered.

Liquid foam in cylinders or penoizol, in Lately has gained immense popularity as insulation material. And this is understandable, because with the help of such foam you can fill even the smallest cracks and insulate your home as reliably as possible.

Positive reviews from those who insulated a house with foam insulation, its affordable cost compared to analogues, and much more - these are not all the advantages of this insulation.

Today we will tell you what liquid foam is, what its key characteristics and advantages for home insulation are. In addition, you will read reviews from those who have had positive experiences with penoizol.

Features and Key Specifications

Liquid penoizol made from resin polymer composition. This foam has several varieties. For example, if we talk about the classification of penoizol by purpose, then technical type foam will be more harmful and toxic. And the foam plastic that is used for insulating residential buildings and apartments differs from it in composition, it is harmless and well cleaned.

As for manufacturing technology, the safest insulation is based on frozen foam. Sometimes liquid foam can release harmful substances when it hardens.

The safest penoizol in liquid form is made on the basis of urea-formaldehyde resin.

Each foam insulation is produced by hardening the material. If the foam needs to be applied directly to the surface that you are insulating, then adhesion increases significantly compared to installing a foam board.

The most optimal version of liquid foam is made on the basis of urea-formaldehyde resins.

Each of the insulation materials that have a foamed purpose is formed by hardening the material from which it is made. If the foam is applied directly to the surface that needs to be insulated, then its adhesion to it increases several times than if a foam slab is installed on that same surface.

For preparing liquid foam Resin and hardener required. A special machine mixes the ingredients and beats them until foamy. Then the foam is pumped through a hose to the insulation site. The finished product is sold in the form of a foam container.

Once penoizol hits the insulated surface, it instantly hardens and provides warmth in the house.

Main benefits of penoizol as insulation for the house are:

Despite the large number of advantages and positive feedback About this insulation, it also has its drawbacks. Among them:

• linear shrinkage of the material, necessary if it is poured without the required pressure;
• temporary bad smell emanating from the insulation;
• the ability to absorb moisture, so penoizol must be protected on all sides;
• due to the presence of formaldehyde in the composition, penoizol is best used for external insulation at home or as an intermediate layer of thermal protection inside.

Areas of application of liquid foam

Liquid foam is used less often inside houses than for external insulation. Most often, with its help The interior of the premises is equipped with:

Also using penoizol containers can be insulated and use it to make all kinds of foam products:

• baguettes;
• skirting boards;
• slabs;
• relief elements and much more.

When making such products with your own hands, you should carefully check all materials. Do not use liquid foam from unknown manufacturers at a suspiciously low price. As a rule, this is a low quality product that can negatively affect your health. It is advisable to monitor reviews on the Internet about a particular product before purchasing. trademark penoizol, and only then make your choice.

Liquid foam, sold in cans, can be used as glue. In shape and scope of use, it resembles polyurethane foam, although it has a higher level of thermal conductivity and vapor permeability.

Using liquid foam, you can attach insulation boards to walls and other surfaces. When working you need follow a number of the following rules:

• check the surface for defects. It should be free of rust, chips and cracks, and it should also be smooth;
• the surface is cleaned and all dust is removed;
• in places where the foam comes into contact with the slab, you need to apply water to improve adhesion;
• penoizol can be applied both to the full surface and horizontally and diagonally in order to save money;
• After applying the foam to the surface of the slab, it must be immediately pressed against the wall.

Also remember that if, when equipping the surface with liquid foam, you do not take care of ventilation in advance, this will subsequently lead to the formation of condensation.

Reviews from customers of liquid foam indicate that one of the reasons for choosing this insulation is the absence of the need to thoroughly prepare the surface before work and the versatility of using penoizol.

So, with its help you can:

Preparatory work

However, some things still need to be taken into account before using penoizol. So, the surface needs to be cleaned of dust and dirt and doused with a little water. Work also needs to be done at a temperature of about 20 degrees. If it is lower, but the mixture needs to be heated in hot water, if more, then it should be cooled.

The foam container is shaken up to 15 times before use so that the material from the inside is evenly distributed over its entire area.

Technology of home insulation using penoizol

The surface should be filled with liquid foam directly onto construction site, so everything happens easily and quickly. Penoizol does not expand, but may experience slight shrinkage. In order to prevent cracks from appearing during the shrinkage process, you must strictly follow all the rules for insulating houses using this material.

As we said earlier, carefully choose purchased penoizol or material for its own preparation. Read the instructions carefully.

When dry, polystyrene foam is suitable for insulating any surface. After pouring it, a seamless layer appears, which has excellent characteristics in terms of sound and heat insulation. Despite minor cracks, this protective layer practically does not allow moisture to enter the house.

How to make penoizol yourself

Liquid foam in finished form very expensive, if you do it yourself, it will cost you much less. But even if you prefer finished products, ask the seller about the availability of quality certificates and information about the composition of the product.

If you comply all stages of creating penoizol independently, the insulation process with its help will be high-quality and effective.

In order to make penoizol with your own hands, you need to mix water foam with a hardener and urea resin. Then you need to let the finished substance harden.

After hardening, the material takes the form of foam. It should be applied to the surface in the form of a thick mixture. Thanks to this consistency, you can insulate even the most hard to reach places, take care of the method of applying pressure so that the foam can completely cover the surfaces.

After hardening, the material serves as insulation. Insulated in this way, the house does not need excessive heating, therefore, you can save on this.

First comes pour the material onto the insulated surface, adhering to all recommendations regarding the installation of the gap.

As a rule, to insulate a house with an area of ​​about 70 square meters you need to allocate about 6 hours to carry out repair work. If you invite a team of specialists to do this, they will probably do it better and faster, but you will significantly reduce costs on your own.

To insulate the surface with liquid foam, you need to fill all empty areas of the walls with foam. To do this, you first need to drill holes and insert a hose into them. And the pressure will ensure the tightest possible fit of the foam to the wall and will ensure that all penoizol and cavities are closed.

Is liquid foam safe?

Many people are interested in the safety of liquid foam and its impact on human health. After all, as you know, formaldehyde, which is part of it, may harm the body. For example, in some US states, fully insulated clothing was prohibited.

However, detailed studies were carried out, and it turned out that if liquid foam is used as insulation, it does not in any way affect the health of people living in cheap house. If, of course, you use a product from a trusted manufacturer, and do not buy penoizol a product of dubious origin.

The current production technology for this, used by the largest manufacturers of penoizol insulation, completely eliminates negative impact on the body. Formaldehyde is still present in its composition, but it is neutralized through special additives. And this, in turn, ensures the absolute safety of the data for humans.

One of great options There may be insulation with penoizol, which we will talk about in more detail in this article.

Modern technologies in the field of construction make it possible to carry out thermal insulation work in 2 ways:

Insulating the wall from the outside

Pros:

• All work is carried out outside the residential premises, thereby without reducing its usable area.
• Additional layers of vapor and waterproofing completely limit the access of moisture to wall structures, preventing the development of fungal infections.
• Wall insulated from the outside loses heat 6 times slower, rather than insulated inside.
• Thanks to the external thermal insulation layer, the load-bearing wall element warms up and remains warm on both sides. The zero temperature point is outside the wall.
• Thermal insulation also plays the role of a soundproofing cushion.

Minuses:

• Difficulty of installation. In addition, if the building is multi-story, then the help of industrial climbers will be required.
• During insulation it will change appearance facade of the building.
• Installation work can only be carried out under certain weather conditions (lack of precipitation, air temperature above +5 degrees)

Comparison of insulation methods

Internal insulation of wall structures

Pros:

• Internal insulation work can be carried out in any season.
• This option for insulating the room will be more economical, since all the work can be done independently.
• Can be insulated separate room , not the entire building.

Minuses:

• Reduces the internal area of ​​the room.
• The wall elements do not warm up completely, which prevents them from accumulating heat.
• During operation condensation may form between the wall and the insulating layer. Dampness is an excellent environment for the development of mold and mildew.
• A layer of insulation will make it problematic to attach shelves and other hanging elements to the wall.
• Heat loss through wall structures remains at 10-15%.

Advantages and disadvantages of penoizol

Penoizol is a lightweight urea-formaldehyde foam, belonging to the genus of organic materials.

It is used both for heat and sound insulation of premises, and for insulation of the soil base.

On the market building materials has not been around for very long and is therefore not as widely known as its counterparts.

Let's look at its positive and negative qualities.

Advantages of penoizol:

• As mentioned earlier, it is not only a heat-insulating, but also a noise-absorbing material;
• Penoizol, unlike many insulation materials, rodents don't eat;
• The material is resistant to rotting;
• When exposed high temperatures He does not ignite, does not melt or smoke;
• Is a breathable thermal insulation material;
• Penoizol has a fluid structure and hardens only on the insulated surface when interacting with air. This allows you to achieve high-quality insulation complex wall structures, as it fills even the smallest gaps and cracks;
• There is no limitation on service life;
• Foam insulation thermal insulation can be reinforced. This can be achieved by introducing mineral additives into the base material;
• The price of the material is relatively low.

Inter-wall thermal insulation

Flaws:

• Gives high shrinkage;
• Difficulty of carrying out installation work. Using foam insulation requires certain knowledge and experience working with the material, since during application strict adherence to technology is required.
• When insulating frame structures it is difficult to predict how such thermal insulation will behave. When hardening, penoizol shrinks, as a result possible occurrence huge voids , which will be problematic to fill out.
• The material is fragile, so it must be sheathed with other materials that have greater mechanical strength.

Some sources say that penoizol is a toxic material that emits toxic gases. However, there are opinions that this process occurs only at the stage of hardening of the insulation.

Specifications

To obtain a qualitative assessment of the properties of this material, it is necessary to evaluate its technical indicators. These include:

• Operating temperature range – from -50 to +120 degrees;
• Material density – 5-75 kg/m3;
• Daily water absorption by mass – 10.5-20%;
• Thermal conductivity – 0.028 –0.047 (W/m) *°C;
• Humidity (mass fraction) – 5-20%;
• The standard service life is 50 years. According to latest research- is not limited.

Tensile strength:

1. For bending deformations – 0.1-0.25 kg/cm. sq.;
2. For compression (at 10% linear deformation) – 0.07-0.5 kg/cm. sq.;
3. Tensile – 0.05-0.08 kg/sq.cm;

Slab penoizol

Equipment necessary for self-insulation

For installation work on room insulation You will need the following mechanisms and equipment:

• Compressor;
• Foam generator;
• Pumps (for supplying solution and for supplying foam);
• Source of electricity;
• Additional fastening and formwork elements;
• Special protection (gloves, glasses, respirator).

Equipment for applying thermal insulation

Lathing for foam insulation thermal insulation

To ensure normal bonding of penoizol to the wall structure, it is necessary to construct a metal or wooden sheathing. In case you choose wooden version, you will need additional processing frame elements with special antiseptics.

NOTE!

The cross-section of the bars is selected strictly in accordance with the calculated width of the insulation layer.

Sequence of installation of the sheathing structure:

1. Mark the areas on the facade where the main elements of the sheathing will be attached to the wall;
2. Drill holes for fasteners in the designated locations;
3. Fill the holes with cement or gypsum mortar, and then, using a hammer, drive wooden plugs into them;
4. Install the vertical elements of the sheathing and secure them using self-tapping screws (on clogged wooden plugs). The pitch of the guide bars is up to 1 m.

When using penoizol no need to lay film vapor or waterproofing. It will not allow the insulation to dry out, and the wall will not be able to breathe.

Horizontal elements are installed on vertical bars in increments of about 0.5 m.

Installation of sheathing

You can start applying penoizol. Since this liquid material, then you will need additional element lathing structure - boundary mesh. It is attached to a frame with insulation to ensure the necessary fixation of the penoizol until it dries completely.

The last step is to install the finishing. In the same way, you can carry out internal thermal insulation of the room. In this case, as finishing material drywall protrudes.

Just above we looked at the method of external insulation with foam insulation using a sheathing structure. Let's consider other options for insulating structures.

Interwall thermal insulation

Can be used for both buildings under construction and those already in use, having voids between the outer and inner walls. In the first case, injection is carried out directly into the open cavity of the wall.

For an existing building, the insulation process is carried out as follows:

• In the seams outer wall need to drill holes(in a checkerboard pattern), equal in size to the hose of the installed pressure equipment;
• In the holes located at the very bottom, hoses are installed pumping equipment;
• Next, the foam insulation mixture is supplied under pressure into the interwall space;
• After penoizol appears in the holes of the next tier (in height), the supply of the mixture is stopped and they move to the row above.
• The lower holes are sealed with plugs to prevent leakage of insulation;
• The sequence of work is repeated until complete thermal insulation of the wall structure is ensured.

Insulation injection

Thermal insulation with foam insulation

Thermal insulation of the facade with cladding slabs

The work is being carried out as follows:

• The required number of slabs and profile elements for the entire façade surface;
• To the facade of the building, using dowels (wooden plugs) and self-tapping screws, galvanized steel profiles are attached;
• Magnesite slabs are installed and secured on a steel frame;
• Holes are drilled in the constructed casing in a checkerboard pattern;
• Using specialized pumping equipment, liquid penoizol is pumped into the holes. The order of filling voids is from bottom to top;
• Upon completion thermal insulation works holes are sealed;
• At the final stage they begin decorative finishing facade, which can be done using plastering and painting compounds.

Application of insulation

Thermal insulation under siding

If desired, magnesite plates can be replaced with another sheet material finishing.

Penoizol insulation is enough labor-intensive process. However, given its excellent thermal insulation performance, as well as low price, it can and should be used for home insulation with your own hands.

Useful video

Do-it-yourself thermal insulation of walls with foam insulation:

In contact with

(urea foam, also known as penoizol) in original form is a liquid foam that hardens on outdoors within two to three hours. The fluidity of the unhardened material allows it to be used to insulate cavities inside the walls of an already built house.

At the same time, the expansion coefficient of this material is zero, which allows it to be used as an adhesive for installing insulating panels, effectively replacing nails and anchors.

Liquid foam for household use sold in small sealed containers, very convenient for do-it-yourself use at home, but if we talk about large-scale construction, then it uses special installations for the production of foam plastic, which produce it at the construction site from special granules, and supply it to the workplace using hoses .

1 Scope of application

The use of liquid foam has spread widely to all areas of construction. Due to its low cost and ease of use, this substance successfully replaces most outdated methods of insulation and sealing of ceilings and walls.

The most common uses of liquid foam are for the following purposes:

• Insulation for horizontal planes and on ;

Liquid foam is one of the most effective insulation materials for attic floors private panel, wooden or brick houses.

It is also common practice to use it when insulating the space between the rafters, and inclined planes the inside of roofs, since the adhesion of this substance to any surface is maximum.

• Insulation of sinuses and hollow spaces;

Due to its optimal consistency, which allows you to seal any small cavity or hole, liquid foam is an indispensable substance for their insulation. We're talking about insulation. underground space V wooden floors, brick formwork, or false wall cavities, places where doors and windows join frames.

At the same time, liquid foam can be used where it is impossible to install any other insulation, for example, in small holes or cracks.

• Insulation of container walls using;

In everyday life, liquid foam plastic is often used to insulate the walls of caissons, wells, or the head of wells; to do this, you just need to make an external formwork with your own hands, the distance between which and the main wall will be 3-5 centimeters, and fill the resulting free space with foam plastic.

• Applications as an adhesive;

In its structure and composition, liquid foam is not very different from classic polyurethane foam; in fact, it was originally produced as one of its varieties.

The prevalence of using liquid polystyrene foam as an adhesive in everyday life is explained by the fact that, unlike ordinary polyurethane foam, hardened polystyrene foam has good thermal insulation and air permeability.

Based on this, liquid foam in cylinders can be successfully used for installation of any slab insulation, in this case, you will not need any nails or anchors.

IN industrial production liquid foam is the basis for the manufacture of a variety of complex PP structures, such as baguettes, skirting boards, relief sculptures, and similar things.

They are created by filling special forming blanks with foam. By the way, this technology can be quite easily implemented at home, which is a fairly attractive area for small businesses. Foam plastic is also used on.

Recently, a fairly large number of small industrial workshops, producing products from molded foam plastic. To organize a production line, it is enough to have a foam generator, raw materials (liquid foam is made from special granules), and blanks of the required shape and size.

2 Advantages and disadvantages

Objectively comparing the pros and cons of urea foam, we can conclude that among all existing materials to insulate a house, the use of liquid foam is most justified in most cases.

Advantages:

1. High thermal insulation characteristics;

According to the main functional characteristics, namely coefficient. heat retention, urea foam is superior to any other insulation.

For example, a ten-centimeter layer of this substance is equal in thermal insulation properties to a 30-centimeter layer of ordinary rigid foam, a 20-centimeter layer of mineral wool, or 2.5 meters of additional brickwork. At the same time, this insulation does not lose its functional properties in a wide temperature range, from -70 to +200 degrees.

1. Moderate cost even at .

In general, the total cost of insulating the floor, roof, or attic of a house with your own hands using liquid foam will be much less than when insulating with any other material.

1. Ease of use;

If you need a small amount of urea foam, then you can use pre-packaged cylinders sold in any hardware stores, but if insulation is required in large quantities, then you can rent a special installation that produces it directly at the workplace.

At the same time, of all the insulation materials existing on the market, only liquid polystyrene foam can fill cavities in the walls, floors, and ceilings of existing structures, without compromising their integrity and appearance.

1. Multifunctionality;

Liquid polystyrene foam for the home, in fact, is an irreplaceable thing - it can be used both as an effective insulation material and can successfully replace liquid nails, anchors, or ordinary nails when installing any insulating panels with your own hands.

1. Resistance to external mechanical and atmospheric influences (for example);

Firstly, this insulation is not afraid of rats, mice and other rodents that gnaw and infest most other solid insulation materials. Secondly, urea foam does not become covered with mold and fungi when the air humidity in the building is high.

1. Fire safety;

A high-quality product manufactured in accordance with GOST requirements does not burn or melt when exposed to high temperatures and fire.

1. High adhesion;

Liquid foam has maximum adhesion to any coating, while the surface on which the insulation will be applied does not require any pre-treatment.

1. Durability;

An interesting fact is that an attempt to implement a study on the service life of urea foam was stopped 78 years after it began, since penoizol did not show any signs of aging and deformation;

1. High noise insulation properties;

TO significant shortcomings that urea foam has, only two factors can be attributed: the first (related only to low-quality products) is the ability to absorb water, but this issue has long been resolved by leading manufacturers.

Adding special mixtures (hydrophobizers) to the composition of urea foam at the production stage completely eliminates the problem of moisture absorption.

The second is an unpleasant odor that will “delight” the insulation for several hours after installation. However, over time, this smell, which is caused by the presence of uncured formaldehyde in the foam, will completely disappear.

2.1 Security issue

Formaldehyde, which is part of the liquid foam mentioned above, has previously been the subject of heated debate. This substance itself, with constant exposure to a person, causes certain harm to the body. It even got to the point that penoizol was completely banned in several American states.

However, this misunderstanding after detailed research was completely resolved, since it turned out that when a house is insulated with polystyrene foam, no harmful effects on humans occur, and the beginning of this precedent in the USA was poor-quality insulation from a company that uses resins not intended for this purpose for its production.

Modern production technology, which is implemented by leading companies such as Tiger, completely eliminates the possibility of any negative influence of this insulation on the human body.

2.2 Features of use

Insulation of the space between the walls of an already operating house can be carried out if the thickness of the cavity inside the walls is at least 3 centimeters. To insulate such walls with your own hands, you need to drill holes with a diameter of about 30 millimeters in the walls in a checkerboard pattern.

The optimal distance between holes is 1.5 meters. After that, penoizol is poured under pressure into the holes, which, upon completion of the work, are sealed with cement mortar.

When insulating walls under construction, penoizol must be poured in layers, and the height of one layer should not exceed 3 meters. If the walls are higher, you need to let the first layer dry, and then pour the second.

External insulation of houses with foam insulation is used in industrial and public buildings. This material has also shown great efficiency in low-rise residential buildings. Thanks to its unique structure, penoizol is an excellent thermal insulator. The ability to absorb sound waves makes it possible to use it for partitions. Insulating walls with foam insulation improves the performance characteristics of any building.

Hangars, covered areas, boxes and garages - this is not the entire list of buildings in the construction of which penoizol is used. , roofing and flooring, this product is also used with great success.

What is KFP?

Penoizol is scientifically called urea-formaldehyde foam (CFP). It also has other names, including: unipore, minipore, isolezh, aminotherm, myfotherm. The material boasts low thermal conductivity and the same bulk density.

In a number of characteristics, it resembles polystyrene foam or polystyrene, which is more familiar to a wide range of consumers. Due to its fine mesh and lack of odor, this similarity is especially noticeable.

This material is almost impervious to air and is not hygroscopic. Considered. The formation of colonies of microorganisms on it is completely excluded. As a result, reviews about wall insulation with foam insulation are extremely positive.

Liquid foam can be poured directly on the construction site. This is quite a significant advantage of the insulation. Thanks to this quality, the consumption of the material itself is greatly saved. If normal construction foam expands during installation, penoizol, on the contrary, even shrinks.

The procedure for insulating foam insulation

Insulating houses with foam insulation is a fairly simple procedure. The general technology contains a simple process in its component. Liquid between the inner, that is, load-bearing wall, and external, from facing bricks. This type buildings are called well masonry walls.

It was also used in Soviet time. Served mainly to save money. An air layer of only 10-15 centimeters successfully replaced half a meter of continuous thermal insulation brick wall. Thus, external moisture could not penetrate inside.

However, in the air gap there is warm and hot air mixed, which led to cracks in brickwork. That is why the heating loss was so noticeable. Shell rocks are also considered one of the coldest buildings. Insulation between walls with penoizol can more than solve this problem.

KFP installation technology

Houses are insulated with foam insulation using a foam generator. It is also used for filling and foaming. Really good equipment equipped with an electronic system with which the product is produced and controlled. Also, most devices have pumps for which characteristic feature is a volumetric commutator drive.

What fills are used?

Wall insulation with foam insulation can be done in combination with the most different materials. Typical reviews are about insulating houses with foam insulation, in which consumers place one of the first places on the technology of working with the material.

The point is that it can be used comfortably almost anywhere. Filling between slate and internal fencing, filling between plasterboard and the main wall, filling of the outer and interior wall, is not the entire list of possible uses of the material.

Holes in the wall

Penoizol means making special holes. They need to be done in different places on the wall. For ease of use, they should be slightly thicker than the supply hose. Since the density of the pumped material is very low, it can also be used in rather frail and dilapidated buildings.

When it hardens, it does not expand, so you don’t have to worry about the CFP breaking apart the structure. This is another fact about which reviews about insulating walls with foam insulation are everywhere. Eg, polyurethane foam does not possess such qualities.

Drilling and filling

Holes are drilled in the wall in a checkerboard pattern, through which the penoizol is then poured. Important point: This needs to be done from the bottom up.

Thus, the material begins to evenly fill the cavity, flowing out through adjacent holes. At this time, you need to quickly seal them with wooden plugs.

You need to continue until the mixture is completely dry. There are no joints or seams in the mass poured in this way. This fact guarantees the density of thermal insulation.