Penoizol application. Penoizol is very convenient, it can be used almost everywhere

Distinctive feature penoizola is its high heat and sound insulating properties, perhaps the best among the materials used in everyday life.

So it is definitely worth taking a closer look at it, and determine if it suits you personally.

Material history

Examples of material performance Penoizol was first synthesized in Germany in the mid-1930s. True, at that time it was not yet used as a heater due to its too complex manufacturing technology.

In fact, this is not a scientific name for the substance, but only a trade mark.

They remembered about it again only in the 50s, first in the "homeland", then it spread throughout Europe, and then to the world. Even now, there are still structures whose roof or walls were insulated with penoizol more than half a century ago, which proves the durability of this material.

In the USSR, its properties were also evaluated, and this composition began to be used in the military sphere - to isolate missile silos and hide equipment from heat-sensitive sensors.

For some time, penoizol was used in fire extinguishing at hazardous facilities (chemical plants, nuclear power plants), but then they switched to substances that cause less damage to the contents.

Key indicators and benefits

Pouring penoizol So what made this insulation so popular? The point is not only low thermal conductivity, first of all it is low weight and compactness.

To provide similar insulation from alternative materials, they will need much more, and the layer is thicker. Even foil-clad items cannot retain heat better.

Penoizol is a durable material that is transported in cylinders, its service life can be up to 90 years, it does not burn or melt. Mold does not start under it, and rodents and insects do not harm it.

The installation process itself takes only a few hours, however, then the material requires additional insulation. Another plus is that for, they do not need to be leveled, as, for example, for laying a sheet insulator.

disadvantages

First of all, the cost can be attributed to the disadvantages, however, it is compensated by the quality of the insulating characteristics.

The main disadvantages are different: penoizol is not suitable for all structures, it should act only as a middle layer, and be reliably protected from external factors.

Penoizol gives significant shrinkage (1-3% by volume). Since Penoizol can be installed only at a certain temperature, this can cause a delay construction works, which is also a minus.

Take into account: it is possible to mount penoizol only at an air temperature of 6 or more degrees.

As strange as it may sound, its main drawback is its prevalence. You should carefully approach the choice of material, since there are many fakes on sale. A low-quality product can be simply dangerous, not to mention the fact that its insulating properties leave much to be desired.

Despite the fact that pouring insulation does not take much time, this work should be done exclusively by a specialist, otherwise the material may lose its properties.

Penoizol must be insulated In addition, it is often required to additionally insulate the material in the structure, which leads to unnecessary costs.

If this has not been done, then the insulation can release formaldehyde gas, which causes an allergic reaction in people.

It is low-quality work and material that cause negative reviews.

As soon as they do not call penoizol - "liquid foam", KFP, "Mipora", "Mettemplast" - but no one will undertake to say exactly what it is, where it is used and what properties it is characterized by. But this product, if you know about all its features and subtleties of the technology of use, will help to solve a lot of problems, and with minimal costs.

So what is penoizol and is it interesting for us in terms of domestic use, especially if we focus on such an important indicator as the ratio of the final result and the funds spent? Let's consider all the main pros and cons of penoizol.

The basis of this material is a polymer (carbamide resin, purified in a special way), which contains various additives (primarily a plasticizer). These include substances such as foaming agent, hardener and water. The technology for preparing penoizol has its own specifics, but this is a topic for another article. We will only deal with its advantages and disadvantages.

It is worth noting that opinions about this material are very contradictory, and there is not so much information. And this is understandable - the products on the market are quite new. Therefore, we will limit ourselves to summarizing all the reviews that are in the public domain.

pros

By such a parameter as the coefficient of thermal conductivity, penoizol surpasses the common one. Its value can vary in the range of 0.033 - 0.048 W / m · K, since the value depends on the density of the material (from 8 to 28 kg / m³). This means that under the same conditions of insulation, CFPs can be laid with a thinner layer, which does not significantly affect the decrease in the usable space in the room.

The poured mass forms a continuous structure. Consequently, there are no joints, overlaps and gaps in the insulation layer, as is the case when using plate and roll products. Accordingly, there is no need to seal them (sealing the base).

Due to the fluidity of penoizol, they can treat any areas - hard-to-reach, with complex geometry or relief. When insulating a private building, it is especially difficult to finish the places of passage through the walls (floors) of various communications, the location of pipes on the roof, and so on.

The absence of fasteners ensures the integrity of the waterproofing layer, eliminates the likelihood of the formation of so-called "cold bridges". Therefore, indirectly, the level of heat loss decreases even more.

According to some experts (with reference to the specialized scientific research institute of the Russian Academy of Sciences), the service life of the material is unlimited. Although in practice (taking into account the "youth" of the product), this has not been confirmed in any way - only theoretical calculations.

Penoizol does not melt, does not ignite, does not emit smoke - it only charred.

Its structure is such that it belongs to the category of "breathable", so unpleasant "surprises" in the form of mold or mildew do not threaten the base material.

The possibility of reinforcing the layer by introducing additives of mineral origin into the mixture.

Low cost - from 790 rubles / m³. This is enough for insulation of about 15 - 20 m² (depending on the thickness of the fill).

Minuses

Like all foams, it does not have high mechanical strength. Therefore, insulation with penoizol is automatically accompanied by a surface lining of the applied layer. And the point here is not in its appearance. For example, for interior decoration garage is not essential. The reason is the fragility of the material. "Unprotected" penoizol quickly crumbles, and there will be little sense from such insulation.

The complexity of the insulation of frame structures. If the mass is poured between the capital partitions, then they are not deformed under its weight. Consequently, penoizol fills the entire cavity to the maximum. And with insulation, when the walls of the formwork are not rigid enough, they can "play". After some shrinkage of the CFP, this will lead to the formation of voids, and then it will not be possible to correct the situation. Although this can be avoided. For example, by maintaining the temperature in the room at a constant and constant level, thereby regulating the rate of evaporation of moisture. But this is feasible only with internal work.

Penoizol emits harmful substances, and intensively. This is one opinion. The other is only partially, and then only until the filled mass has completely hardened.

Restriction in application - it is not recommended to use it for insulating the buried parts of structures. The same applies to different types screeds (equipped according to the "wet" technology), since moisture is partially absorbed into the material, which worsens its properties as a heater.

The complexity of independent work. The main difficulty is in strict adherence to technology, and this requires certain knowledge and experience.

But this is basically a theory, and in some respects it is not entirely confirmed. After all, there is still no practice of using penoizol on a large scale, and for a long time. Accordingly, there is no accumulated statistics, specific recommendations for the use of this material, taking into account all the nuances of this insulation technique. Therefore, before making the final decision on the advisability of acquiring and installing with your own hands, you need to think carefully about everything. Better yet, consult a "pro".

For the sake of fairness, it is worth pointing out that many manufacturers advertise other types of penoizol - crushed (packed in mats), sheet. But this is already somewhat different, and more like a regular one (in granules or slab).

Trade marks

On the territory of Russia, the material "urea-formaldehyde foam" is also known under the name "urea foam" and under trade marks Penoizol, Unipor, Mipora, Mettemplast. The right to use the Penoizol trademark belongs to NPF NST.

Abroad, urea-formaldehyde foam is also produced under various trademarks: in England - flotofaum (Varmal LTD), in Japan - iporka, Germany - aminotherm, Czech Republic - mofotherm, Switzerland - isoshaum, in Denmark and Canada - insulspray, France - izolezh, in the USA acrolithfoam and dinafoam, in Poland izopiana and plastsoil. The English-language general name for the material is Urea-Formaldehyde Foam Insulation (UFFI) or simply Urea-Formaldehyde Foam.

Physical properties

The material has low thermal conductivity, low bulk density. In many respects it is comparable to conventional polystyrene foam. The material is similar to regular polystyrene and outward appearance- white fine-mesh material, without large air bubbles, odorless, elastic (restoring its original shape with slight deformation). If you slide your fingers along the cut of the material, then only the bubbles damaged during the cut will crumble. The material is resistant to the action of microorganisms and rodents.

The ability to pour urea foam directly on the construction site makes it unique because none of the other materials with comparable thermal insulation performance is flowable. It is only necessary to ensure strict adherence to the technology - to use high-quality components and fill at a temperature not lower than +10 degrees.

If necessary, penoizol in liquid state can be poured into hollow profiles of three-layer enclosing structures, where it polymerizes and dries under normal conditions. According to the manufacturer, in structures filled with penoizol, even in the presence of cracks in outside wall, the danger of moisture penetration into the room is excluded. However, this statement seems to be doubtful, since in connection with the fact that the urea-formaldehyde foam is rapidly destroyed at high humidity, the urea-formaldehyde foam should be protected from getting wet.

pouring penoizol

Other material applications:

• thermal insulation of various types of external fences;
• warming different options walls including combined (consisting of various materials);
• as an insulating layer in three-layer brick walls;
• in the form of filling in reinforced concrete wall panels;
• noise-insulating and noise-absorbing coatings
• insulation in laminated panels from prefabricated structures;

Durability

The information below is provided by the manufacturer and not verified by independent tests:

The time of reliable operation of penoizol as a non-bearing middle layer of three-layer structures of buildings and structures under any changes in operating conditions within the studied range (temperature from 0 ° C to plus 30 ° C and relative humidity 75% at + 40 ° C) unlimited. Based on the experimental data obtained during durability tests and the experience of operating similar polymeric materials in civil engineering, it can be assumed that the predicted service life of penoizol for vertical structures of structures will be at least 50 years.

This information should only be considered an advertising statement.

Technology

It is produced without pressing and without heat treatment by foaming a foaming-hardening agent.

In a foam generator with compressed air supplied in excess, its subsequent mixing in a mixer with a pre-dispersed polymer resin. It is also recommended to add modifiers that improve the physical and mechanical characteristics of penoizol. Cheap non-scarce components are used as raw materials. By mixing in the required proportion of a foaming agent and a hardener, a ready-made foaming solution is obtained. After that, containers with a foaming solution, resin, water for flushing are connected to a gas-liquid installation (GZHU). After that, an air compressor is connected to the installation. Then, in the installation, the components are mixed with their subsequent foaming, under the action of compressed air. A ready-made solution in the form of liquid foam is fed through the outlet through a hose. The foamed mass is poured into a mold, where it hardens within 3-4 hours. After that, the form is opened and the hardened mass is cut into plates of the required dimensions. Easily cut without heating with a knife, string, wire. Then the slabs are dried in natural conditions for 1-3 days. After that, the insulation is ready for use.

As mentioned above, the not yet hardened penoizol has a sufficiently high fluidity, which makes it possible to pour it directly into the air cavities left in brickwork during construction. The same property makes it indispensable for the thermal insulation of already built buildings (with an air cavity), since penoizol is the only thermal insulation material that has the necessary properties for this. Unlike polyurethane foam, penoizol does not increase in volume (the first one will simply heat the wall), and it is also several times cheaper.

With the use of this material, lightweight structures are further developed.

disadvantages

A significant disadvantage of urea foams is their relatively high water absorption (up to 18-20% by weight). To solve this problem, you can use a number of organosilicon water repellents, which allow, during the subsequent finishing treatment of urea foam products, to reduce the amount of water absorption to 4-5%. The processing technology is simple and does not greatly increase the cost of production. But this method of solving the problem is not applicable to material poured from a liquid form.

Urea foam degrades in excess of moisture with the release of urea and formaldehyde, therefore, thermal insulation from it should be protected from getting wet.

Security

According to the statements Russian manufacturers Penoizol is completely environmentally friendly, it has passed a lot of various tests and certifications - which confirm the high performance properties of this material and its environmental safety. However, in a number of US states and Canada, the use of urea foam (UFFI) as a thermal insulator is prohibited by law as potentially hazardous to health. It was decided not to renew the initial federal ban on urea foam in the United States in the future, as "formaldehyde houses" quickly acquired a bad reputation, in connection with which urea foam has already ceased to be actively used in US housing construction, and the problem has lost its original relevance.

In some European countries, such as the UK, the use of urea foam is allowed for thermal insulation, subject to strict safety regulations for the handling of toxic building materials... Violation of the technology of using the material, especially when pouring foam in the cavity between the inner and outer brick walls structure, can lead to sharp negative result... The reason for the potential danger is the excess formaldehyde released during the polymerization of the urea-formaldehyde foam. Formaldehyde can cause irritation and allergies in susceptible people and has been suspected of being carcinogenic. However, the carcinogenicity of formaldehyde vapor concentrations released into the air during solidification of urea foam is disputed by a number of scientists as unproven.

The risks associated with the release of formaldehyde into the room when pouring urea-formaldehyde foam between the walls can be reduced by applying a vapor barrier by inside walls - excess formaldehyde will be eroded into the surrounding space without entering the room.

The obvious key conditions for reducing the amount of formaldehyde released during curing of urea foam and the associated risks are the use of high-quality materials with modern modifiers and careful adherence to the pouring technology. The cheapness of equipment for pouring urea foam and its initial components led to the appearance on the market a large number small contractors offering services for pouring urea foam into the spaces between the walls of houses, which, however, cannot always ensure the quality of work. Therefore, a consumer who decides to use this technology should carefully consider the choice of a contractor - it is very difficult to remove low-quality foam after pouring.

Liquid thermal insulation based on carbide resins has been used to insulate houses since the 70s of the last century; this material is known to the consumer as penoizol. In fact, this is another type of foam, but made and hardened directly at the construction site. Optimal applications include the filling of interior spaces in manhole and layered brickwork and frame structures. Reviews about this heater and about the technology itself are ambiguous, they cannot be attributed to universal and unlimited. When choosing this method insulation, it is important to use high-quality raw materials and equipment, work is carried out exclusively in the warm season.

Penoizol belongs to the group of foamed plastics with an open cell structure, which allows it and the insulated structures to breathe. The flip side of the coin is its hygroscopicity: moisture is passed through, while limiting its use. The permeability of penoizol is confirmed by the reviews of the owners of private houses, it is noted that it gets wet easily, but does not accumulate, but removes condensate. TO useful properties include resistance to biological threats (decay, fungus and even rodents), safety and good adhesion.

The main performance characteristics of penoizol include:

• The thermal conductivity coefficient is in the range of 0.028-0.04 W / mK.
• The specific gravity is from 6 to 35 kg / m3.
• Flammability group - G2.
• Compressive strength - no more than 0.5 kg / cm2. In this regard, penoizol is inferior to conventional and compacted foam, its bearing capacity is minimal.
• Hygroscopicity - up to 10% per day.
• Sound absorption - up to 65%.
• Operating temperature range: -50 to +120 ° C.
• Shrinkage within 1-4%.

According to a statement from construction companies, in the first days of polymerization, the insulation releases a small amount of formaldehyde, after which it becomes completely inert. Reviews of the owners of private houses confirm this, the presence of a smell for more than 2-3 weeks is a sign of poor-quality thermal insulation.

Feasibility of use

In terms of fire safety, the insulation does not raise any questions: penoizol is charred under the influence high temperatures but does not melt, sustain combustion, or emit smoke or toxins. But, despite the attractiveness of its use (non-flammability + a light weight), it is poorly suited for thermal insulation of the roofing cake of private houses due to destruction under the influence of sunlight.

It is important to understand what penoizol is and in what cases it is used. An unambiguous limitation is areas subject to intense moisture exposure: basement, basement, foundation. There are two reasons: high hygroscopicity and low strength. Reviews show that penoizol itself can withstand repeated freezing and thawing cycles without damaging the structure, but completely losing its insulating capacity. For the same reasons, it is not used on open and loaded structures: floors for screed or facades for plastering.

The best option is thermal insulation of the interlayer space, in this case, penoizol hardly shrinks (within 1%), is closed from rays, precipitation and groundwater... Good results are achieved when filling internal partitions or hinged facade systems with liquid foam (of course, subject to reliable water and vapor protection). When choosing this method for insulating a private house, it should be remembered that work is carried out exclusively at temperatures from +5 ° C and above. It is believed that if all the rules for the preparation of foam and pouring are observed, penoizol will retain its insulating properties for at least 70 years.

Review of material and technology reviews

“I ordered the service of insulating the inter-wall space with penoizol in a private house made of silicate bricks. Most of the time was spent on preparation, namely, checking and updating the state of the masonry, drilling holes. The filling itself took no more than 5 hours. Contrary to the reviews read, the insulation did not leak near the openings, the smell passed within the first week. I appreciate the insulating ability of this insulation. "

Pavel, Moscow region.

"I used penoizol for insulation wooden house, happy with the result. The walls are sealed and warm, heating costs have been significantly reduced. Of the minuses, I want to note the impossibility of controlling the volume of poured penoizol, the actual invoice for services came out 1.5 times higher than the preliminary one. I advise you to check the consumption or do the work yourself. "

Vladimir, Krasnodar.

“I do not advise you to insulate floors in the attic with liquid foam, since practice has shown that shrinkage does not stop after it has solidified. I may have made a mistake and not shielded it enough from the sun's rays, but with mineral wool or expanded clay, there would be no such problems. The only plus I noticed is the high speed of work. "

Nikolay, Moscow.

“I bought sheet penoizol for insulating a garage, on average, 1 cubic meter costs 600 rubles. I chose it for fire safety reasons, during the installation process I did not find any special differences from ordinary foam, except that in the density of the structure it is closer to extruded. I did not notice any shortcomings during the year of operation, I consider the cost acceptable. "

Alexey, Voronezh.

“I insulated the old one with liquid penoizol brick house, I did all the work myself. The equipment cost me 30,000 rubles, resin and hardeners - 20,000. I think that the investment paid off, according to my calculations, I even saved, plus I am completely confident in the quality of the insulation. Shrinkage in the interlayer space was minimal, the smell lasted for 1.5 weeks. "

Eldar, St. Petersburg.

“When choosing a company that pours penoizol, I advise you to check both the certificates and reviews of those who insulated their houses before, and the material itself. In two organizations, they refused to provide me with samples; in another, the test foam significantly decreased in volume. I was satisfied with the quality of the chosen company (the insulation did not settle and was white, did not paint after hardening), but the smell in the house did not remain for 2 weeks, but for about a month. "

Andrey, Nizhny Novgorod.

Pros and cons of penoizol

The obvious advantages of the material include: fire safety, low thermal conductivity, no load on the foundation, good soundproofing ability, resistance to biological influences, environmental friendliness and safety. The main plus is the high speed of work (the inter-lining space or partitions in a private house of an average area are filled in 4 hours). The cost of filling services is considered affordable, in some cases it is negotiable.

The disadvantages of thermal insulation include an unpleasant odor during polymerization, the complexity of pouring with vertical insulation, shrinkage and the need for protection from external influences. The main problem is the need to use extremely good raw materials and equipment to ensure sufficient pressure. It is extremely difficult to determine the quality of insulation at home, there is only one way out - checking the certificates and contacting a trustworthy company.

To minimize shrinkage, many companies add special mineral additives to the composition and pay more attention to preparation (checking the integrity of walls or membranes, removing moisture). Fast polymerization with vertical insulation is considered a gross violation of technology. Penoizol is applied in layers with an exposure of a clear period of time (it is definitely not worth counting on the completion of the process within 4 hours). Complete hardening takes 2-4 weeks. top scores are observed when filling the space between the main walls, in this case the pressure on the material completely eliminates shrinkage during polymerization, sometimes it even comes out through the openings.

In addition to liquid foam, penoizol insulation is produced in the form of sheets or crumbs, the latter type is made by crushing to fractions with a diameter of 1-, 5 cm.Filling such granules is considered a good alternative when erecting a building from scratch or overhaul, this building material fully retains the useful characteristics and qualities of penoizol and is filled up on its own. With thermal insulation of already operated structures, the crumb is blown out like ecowool. Granular penoizol is positively assessed by specialists, the optimal scope of application includes floors on logs, attic floors, internal cavities.

The average price of crushed insulation is 580 rubles per 1 m3, sheet - from 600, installation or blowing services cost at least 50% of the cost of the material itself. The cost of insulating a house with liquid penoizol is usually negotiable, with self-preparation of surfaces and structures, the owner pays at least 750 rubles per 1 m3. The most expensive are the services for thermal insulation with the simultaneous placement of the frame - from 1400 rubles per 1 m3.

Among the many heaters that exist on the construction market today, sprayed materials stand out favorably, in particular - penoizol. Let's consider it from all sides and find out whether it is possible to make thermal insulation with this substance on our own.

Penoizol - what is it?

Penoizol is a modified foam. In fact, it is a foamed plastic, the basis of which is urea - formaldehyde resin with the addition of phosphoric acid. The assembled insulation consists of:

• 98% air;
• 2% - forming foamed resin with additives.

Penoizol is highly effective due to the formation of countless air pores that prevent heat from penetrating through the walls to the outside of the building.

Specifications

The main characteristics that professionals pay attention to when choosing a heater:

Material shapes

Penoizol is supplied to the construction site in different forms:

1. Liquid... This is the most common form. For installation, you need special spray equipment for penoizol, which delivers the prepared solution under pressure. The setting of the applied foam begins in 10-15 minutes, the initial hardening occurs after 3 hours, the material finally hardens in 2-3 days. The finished insulation is an elastic substance of medium hardness, capable of recovering its shape after exposure to mechanical stress.
2. Sheet... This is the second most popular type of penoizol. For the manufacture of sheets (plates), the same resin and acid solution is used. It is sprayed into molds, where it solidifies to a working condition, after which it is attached to walls and ceilings like any plate insulation.
3. Granulated... This is foam-ash crumb obtained as a result of crushing sheet materials, often defective. The chip of crushing is to increase the volume of the insulation up to 3 times, while its technical properties do not decrease. Granules (crumb) have found application in the insulation of basements and attic, as well as interfloor ceilings.

Penoizol advantages

Why do professionals choose this insulation in different forms:

• Low coefficient of thermal conductivity is the main advantage of the material. A 45 mm layer of finished insulation is equivalent in characteristics to a 75 mm foam layer or 125 mm mineral wool;
• The elasticity of the hardened foam makes wall insulation with penoizol effective - the material fills the entire space between the structural layers, leaving no cold bridges;
• High adhesion to any surface;
• Vapor permeability: due to open pores, it does not retain moisture on the surface of the walls;
• Fungi do not grow on penoizol;
• The insulation does not change its characteristics in severe frost or significant heating; when the temperature is normalized, the frozen foam remains elastic;
• Raw materials for penoizol are inexpensive, therefore, insulation can be carried out saving the family budget.

disadvantages

Like any other material, penoizol has disadvantages:

• With its elasticity, foam insulation still shrinks up to 5% if it is under pressure between the layers of the walls;
• Vapor permeability with excess moisture can become a problem - the polymer does not allow water to pass through the walls, so its accumulation can reduce thermal efficiency, and moisture evaporates for a long time;
• Warming a house with penoizol is impossible without a special installation - a spray. You will have to rent it or order work from professionals, which will cost a lot of money. Next, we will look at how to assemble the installation yourself;
• Installation is possible only at an air temperature of 15 ... 20 ° C.

Comparison with PPU: which is better

Penoizol or polyurethane foam: which is better? At first glance, these materials are similar to each other. Let's compare the points in the table.

Criterion	PPU	Penoizol
Composition	Polyol and polyisocyanate	urea - formaldehyde resin with the addition of phosphoric acid
Water absorption,%	1-2	10-20
Thermal conductivity coefficient, W / (m * K)	0,021	0,031…0,041
Flammability, class	G3, G4	G2
Security	Approved for worldwide use, no concern for human health and the environment.	Formaldehyde compound is controversial about material safety, banned in many countries in the USA, Europe).
Service life, years	Outdoors - 15 years, indoor in structures - up to 50 years	According to the manufacturer 50, according to some customer reviews, it collapses after a few years.
Price	1200 RUB / kg	About 600 rubles / kg

Conclusion: PPU is in the lead by all indicators. It's warmer, drier, safer, but you have to pay for it all. Penoizol is inferior in performance, but it is much cheaper.

Do-it-yourself penoizol: home laboratory

Finding a liquid polymer for spraying is not as easy as we would like, so let's consider a way to prepare a working solution ourselves. What needs to be prepared:

• Urea-formaldehyde resin;
• Foaming agent;
• Industrial tap water;
• Orthophosphoric acid.

Ingredients can be purchased at a hardware store or chemical store. Please note that the components have a short shelf life (only a few months). To get a normal working foam, you need to take only fresh raw materials. Otherwise, the insulation will turn out to be unstable, the layer will crack and give a large shrinkage.

The proportions of the components for the preparation of the solution, depending on the desired characteristics of the foam, can be different. If necessary, take in dense foam large quantity resins and acids, respectively, take less material for loose foam.

To prepare 1m3 of penoizol you will need:

• Resins 6… 70 liters (more resin - denser foam). The material is heated to 20 ° C or more, there is no need to filter and control the viscosity;
• The water is heated to 20 degrees or more. You can use regular tap fluid. Its amount is determined conditionally until the foam of the desired property is reached, the reference point is approximately the same volume as that of the resin;
• Alkylbenzenesulfonic acid (ABS) foaming agent in an amount of 0.5 ... 1.0% of the total volume after mixing the resin and water;
• The catalyst - phosphoric acid is taken in the amount of 0.2 ... 0.5% of the total volume.

For the manufacture of penoizol brand M15 take:

• Resin = 20 kg;
• Water = 24.5 kg;
• Foaming agent = 0.1 kg;
• Acid = 0.4 kg.
• Additives to reduce cracking - resorcinol (50 g).

The components for penoizol are mixed and poured into the spray container.

How to build a working rig

Buying a spray installation for building a house is not rational. It is much cheaper to rent it or assemble it yourself if the following items are lying around in the arsenal:

• Gas-liquid installation;
• Compressor;
• Transport platform for containers.

The installation and the compressor are connected in series. The solution is poured into the container, the machine is started and layer by layer, row by row, insulation layers are applied to walls, ceilings / floors or into molds.

If there is no experience in insulation with sprayed materials, you should seek help from professionals or test your strength in a separate area, for example, on an unnecessary board. It is important that the spraying is even, without spitting. If necessary, adjust the power of the solution supply.

Penoizol insulation of structures

When the spray device is ready and the solution is mixed, you can start working.

1. As already mentioned, the first step is to assemble the installation according to the instructions or sequentially for a homemade device.
2. A solution of liquid penoisol raw materials is poured into the container of the device.
3. A crate is installed on the prepared surface (if thick layers of insulation are needed).
4. Insulation is applied to the work surface. Movements must be precise, speed is average. Do not smear the solution or apply very thick caps.
5. When the layer is laid out, it is left for 2-3 days until it hardens completely, after which the excess is cut off with a knife.

Resin for penoizol is sold ready-made already in solution, so it is better to use it than to measure the proportions yourself.

You should not lay a thick layer of foam insulation between the walls, which will not be able to straighten out normally, and then will shrink.

For thick layers, it is advisable to equip the crate so that the foam evenly occupies the entire space allotted to it from all sides.

You can do the professional work of installing the foam yourself, saving you a significant amount of money.