Foaming with Penoizol - features of the product

Foaming with Penoizol - features of the product Wall insulation with Penoizol - characteristics and photos

During the construction of houses or their reconstruction, the question often arises about effective wall insulation. for this they produce a variety of materials that differ in their performance characteristics, qualities, properties and cost.

Recently, insulation penoizol or urea-formaldehyde foam has become very popular in the Russian market. It is he who makes it possible to insulate almost all building structures in a short time and inexpensively.

What is this? Penoizol is often referred to as modified foam.

Its consistency strongly resembles marshmallow, and the material itself is foamed plastic with a honeycomb structure.

General information

Improved foam is a modern thermal insulator for thermal insulation of building structures. Very often the material is prepared right at the construction site. The liquid mixture using specialized equipment is used to fill the voids in the wall, roof, ceilings, attics. Due to the manufacture of insulation at construction sites, they save money, time and effort for the delivery of a simple thermal insulator, as well as its handling.

There is still no need for additional storage space for thermal insulation products.

Composition of the product

In the manufacture of penoizol, inexpensive components are used, due to which the finished material will have an affordable price. For the production of such insulation you will need:

  • Water.
  • Phosphoric acid.
  • Foaming component.

  • Urea-formaldehyde resin.

Dosed particles of such components are put into special equipment (foam generator), to which compressed air is drawn. Thanks to the use of such a device, a foamy mass will be formed, which is intended to seal voids. The modified type foam has a white color and a jelly structure. by means of it it is possible to quickly seal all air spaces.

Solidification will occur after 12 minutes, and after 4 hours the mass will become solid, and after three days it acquires the "final" degree of strength. 72 hours is enough for the final drying of the material.


Thermal insulation of structures is made by different types of penoizol. There can be three types of them:

  1. Foaming with Penoizol - features of the product Liquid is the most frequently used variety by builders. Its popularity is justified by its ease of use, and such a thermal insulator is prepared directly at the site using special equipment.

    You can also buy the material in cans for a small amount of work, and air gaps should be closed with liquid foam when erecting, reconstructing or repairing various buildings.

  2. Roll or sheet. Such insulating material is made by pouring liquid foam into special molds.After the mass has hardened, it should be cut into sheets of ideal length, dried and mechanically cleaned. Certain manufacturers offer foil foam sheets.

    Such materials cannot be glued, and they must be fixed with dowels, and covered with cladding on top.

  3. Crumb - granules of the penoizol type are obtained by crushing the solidified penoizol into parts, and their size is not more than 1.5 cm. The granular type insulation has a minimum degree of density (up to 8 kg per square meter).

Different types of liquid material can be applied for different construction purposes.

Where it is used

Foil-clad penoizol is widely used in private and professional construction. It is used not only as a material for thermal insulation, but also as a sound insulating component. It is used for insulation:

  • Vegetable stores.
  • Piping
  • Roofs.
  • Facades.

  • Outside wall surfaces.

Also, the material is intended for the manufacture of sandwich panels. Granular insulation has found application during the insulation of horizontal structures - floor surfaces, interfloor floors and attics. Foil insulation can be used to insulate water pipes. It is important to know that liquid foam has certain application restrictions.

For example, it is not recommended to use it on areas that are damaged by intense exposure to moisture. These include plinths, foundations and basements. The reason is simple - the insulation can withstand multiple cycles of freezing and defrosting, and it also loses its own thermal insulation qualities.

Please note that experts do not yet recommend using urea-formaldehyde foam for arranging roofing pies. The fact is that the material will quickly collapse under the influence of the sun's rays, which is why, soon after installation, it may lose its soundproof and heat-insulating qualities.


In terms of its technical type parameters, penoizol has surpassed most modern types of insulation. The main characteristics of the material:

  1. Excellent thermal conductivity - indicators of this parameter can fluctuate in the range of 0. 03 ...

    0. 4 W / mK. To preserve heat and save on heating, it will be enough to put insulation sheets with a thickness of 10 cm on the walls.

  2. Excellent noise absorption rates (more than 65%).
  3. Fire resistance.

    Heat-insulating products based on urea-formaldehyde resins can be classified as flammability class G-1, and in terms of flammability V-2. This means that the material will not ignite in a fire and will not melt. With long-term exposure to the flame of fire, the insulation will evaporate, and not yet release toxic substances.

  4. Resistance to moisture - the thermal insulator perfectly absorbs moisture and gives it back without losing its qualities of the operational type. Insulation can absorb up to 20% moisture and evaporate it very quickly.

  5. Strength - compression with a linear type of deformation is 0.25 ... 0.

    3 kg per square centimeter, and when stretched 0.05 ... 0.

    08 kg per square centimeter.

Insulation can be used at large temperature fluctuations from -50 ... + 100 degrees, and this makes it possible to use it in difficult climatic conditions.


Advantages and disadvantages

Liquid foam has many advantages, and also distinguishes it favorably from other types of thermal insulators ... This material has the following advantages:

  • Low thermal conductivity.
  • Elasticity and elasticity.

    Due to its properties, the foam will fill all voids and cracks, excluding the appearance of cold air bridges.

  • Resistance to mechanical stress. Under a power load, the solidified material is crushed, and after the cessation of pressure, the initial position will quickly return.
  • Resistance to sudden temperature changes and changes in humidity.
  • Excellent vapor permeability.

    Thanks to this property, condensation will not accumulate on the insulated wall surfaces.

  • Excellent grip. The foam reliably and quickly adheres to any type of base, due to which it is convenient for it to insulate buildings with complex structures.
  • Excellent protection against fungal colonies and mold. You do not have to be afraid that insects can start in the insulation or rodents can spoil it.

  • Favorable cost. Raw materials for creating penoizol are inexpensive, which has a positive effect on the prices of the finished material. By installing a thermal insulator with your own hands, you can save a large amount on house insulation.
  • Durability - properly installed thermal insulation material can last more than 50 years without changing the quality of operation.
  • Environmental friendliness - when using a thermal insulator, we do not emit harmful substances, and it is safe for health.

Despite the advantages listed above, liquid foam cannot be called the optimal insulation. There are also disadvantages of penoizol.

According to reviews of those who insulated their homes with such material, it will indicate shrinkage of the material (about 5%). Another disadvantage is the impossibility of preparing and applying a foam-type mass without special equipment. It can be rented or purchased, and this will lead to additional spending of finance.

The disadvantages include a high percentage of moisture absorption, low tear strength and the inability to work with foam with a temperature of +5 degrees. In addition, when installing the material, there are risks of releasing hazardous phenol-formaldehyde vapors. And yet, harmful material or not, you should understand in more detail.

Whether the material is harmful or not

According to numerous reviews on the network, many liquid foam consumers complain of a toxic odor when installed and dried. As experts noted, such situations can be observed when buying a low-quality thermal insulator.

The fact is that certain manufacturers use cheap carbamide resin with a large amount of impurities to save money. A quality heat insulator can only give off an unpleasant odor when installed. This is due to the fact that during polymerization, the substance will begin to release formaldehydes. But their number is insignificant, and in comparison, most modern paints and varnishes emit much more harmful substances, and while penoizol made according to the standard will stop emitting formaldehyde when dry.

Please note that if we compare all the pros and cons, we can conclude that it is better to abandon inexpensive insulation from unfamiliar manufacturers.

It is better to overpay and give preference to popular brands that have won the trust of consumers.

Overview of manufacturers

Penoizol is a trade name for urea foam and such a mark can only be used by NST (this is "New Building Technologies"). Such material is produced abroad, in each country it has its own name:

  • Flotofoam in the UK.
  • Animotherm in Germany.
  • Insulsprey in Canada.

  • Mofotherm in the Czech Republic.

The basis for the creation of liquid foam in Russia will be produced by ZAO Metadynea, OAO Togliattiazot, as well as OAO Akron and others.


Foaming with Penoizol - features of the product Do-it-yourself Penoizol can be made directly at the construction site, and also requires specialized equipment for filing. This includes gas-liquid installations, the function of which is to mix the incoming components into the material and supply the finished foam to molds or places of insulation.

In addition to mixing units, an air compressor and reagent containers are required.

The principle of operation is as follows - connect all containers with the required components, as well as the compressor, to the gas-liquid device using a hose. After mixing the reagents, a foam is obtained.

Further, it will succumb to casting molds or air gaps on construction sites. Before you buy penoizol, and even buy or rent all the necessary components for house insulation, you need to know certain recommendations.

How to choose

When choosing equipment, you need to take into account many nuances:

  1. For installation of liquid foam a couple of types of installations can be used - gas-liquid or pneumohydraulic technology.

    The first, that is, budgetary, is appropriate for the use of insulation for small-sized objects, for example, for a country house.pneumohydraulic equipment will be huge in size, cost and performance. It is required to be selected when it is necessary to perform large works.

  2. It is recommended to give preference to installations with a receiver and a built-in compressor type.
  3. Pay attention to what the plunger pump is made of and its options.

    Choose a pump that is made of stainless steel / plastic. It must have a speed control function.

  4. Do not buy a unit with an attached foam generator up to the pumping part.

We strongly advise against buying penoizol "blindly". Be sure to ask sellers to make material and demonstrate quality.

The sample must be:

  • Be white.
  • Do not decrease in volume immediately after drying out of the installation sleeve.
  • Withstand pressing with hands after 1/4 hour.
  • Do not have heterogeneous and large pores.
  • Recovers quickly from pressure.

If the manufactured mass meets all the requirements, you can safely buy it.