Foam Insulation: Options On The Air Gap For The Walls Of The House, Installation Technology Of Work Between The Roof Masonry With Polyurethane Products, Reviews

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Foam Insulation: Options On The Air Gap For The Walls Of The House, Installation Technology Of Work Between The Roof Masonry With Polyurethane Products, Reviews
Foam Insulation: Options On The Air Gap For The Walls Of The House, Installation Technology Of Work Between The Roof Masonry With Polyurethane Products, Reviews

Video: Foam Insulation: Options On The Air Gap For The Walls Of The House, Installation Technology Of Work Between The Roof Masonry With Polyurethane Products, Reviews

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Before starting the construction of a building, it is necessary to carefully consider the issue of its thermal insulation. In this case, not only the walls should be insulated, but the entire structure as a whole.

Today the construction market is represented by a huge selection of thermal insulation materials, but foam deserves special attention. It allows you to perform high-quality insulation, protecting the building from temperature extremes, and provides a constant microclimate in the premises at any time of the year.

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Features of the

In construction work, insulation is usually carried out with polyurethane foam. It is a polyurethane polymer that is placed in metal cylinders under high pressure during production. The mixture from the cartridge is displaced by the gas, expands and, when interacting with air, increases in volume up to 20 times, acquiring a cellular structure.

Foam insulation is a foamed plastic that has high strength and ductility. The density and stiffness of the material depends on the components that make up it.

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The main difference between foam and other heat-insulating materials is that it acquires its functional properties only after installation. During its application to the surface, a chemical reaction is observed, as a result of which the mixture hardens and provides excellent adhesion.

Another feature of the material is that it does not leave gaps and seams, which increases its waterproofing characteristics.

Foam is considered a versatile product, as it can be used to adhere to any kind of surface.

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The benefits of foam also include:

  • environmental friendliness;
  • high thermal stability;
  • durability;
  • resistance to temperature extremes;
  • protection of buildings from the appearance of fungus;
  • anti-corrosion properties;
  • ease of use.
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As for the shortcomings, there are practically none. The only drawback of the material is the high price. Besides, the applied mixture must be protected from direct sunlight, under the negative influence of which it can collapse.

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Views

The foam insulation method is very popular among builders, since this material allows you to perform work with high quality, providing reliable thermal and waterproofing of buildings. The most popular types of such mixtures are: polyurethane foam, polyurethane foam and penoizol.

The polyurethane foam is a part of the polyurethane foam. This insulation is easy to install, so you can do the work yourself without the help of specialists. The mixture from the cylinders is applied to the surface by spraying using the energy of gas compression. After spraying, it hardens and acquires a cellular structure, which is an excellent option for thermal insulation that protects the surface from moisture absorption and temperature extremes.

Polyurethane foam is of several types:

  • Facade… It has a high frost resistance index. This mixture is also used for insulation before laying the roof.
  • Ordinary… The material is characterized by versatility and is suitable for finishing both inside and outside buildings.
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  • With increased strength… Due to its special structure, this mixture has excellent quality and long service life.
  • Foam glue… It is applied to the work surface under a certain pressure and does not have an air gap.
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As for polyurethane foam, it can be used to thoroughly insulate any structure. It is made from two components, due to which its structure, when solidified, takes on the appearance of closed cells. Therefore, the polyurethane mixture is resistant to vapor and moisture permeability. This foam is applied in a small layer of 6 cm, usually one spray can is enough for 1 m².… Work with the material should be carried out at a temperature of at least 25 ° C.

Penoizol is in no way inferior in its qualities. It differs from previous types of foam in a liquid structure and low density. This insulation is sold in the form of rigid plates, the granules of which are filled with polynor. Sometimes the mixture is also packaged in barrels. Penoizol can be used as a good thermal insulation for buildings built from a frame… It must be applied on a dry surface. Penoizol is also often chosen for sealing pipes and other communication systems.

All types of foam are of high quality and versatility. The disadvantage of each of the options is considered to be a rather high cost.

Therefore, before making a choice in favor of a particular mixture, it is necessary to make all the calculations and choose the most optimal option.

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Scope of application

Foam insulation is considered a unique material, since it does not require special devices to apply it in a domestic environment. With the help of foam, you can easily seal walls, windows and cracks in the roof of the house. The material is also suitable for insulating frame-type buildings.

Since the foamy insulation quickly hardens under the influence of the external environment and turns into closed-cell plastic, it is recommended to be used for certain types of work.

  • Installation and connection of various structural parts… This applies not only to the fastening of the frame elements, but also to the installation of garage doors, door and window blocks.
  • Isolation of interwall space from noise and sounds… This mixture can also insulate the ceiling of a country house or apartment, the place of installation of hoods, air conditioners.
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  • High quality thermal insulation… Loggias, balconies, garages and hangars are insulated with foam. The material is also suitable for insulating facades.
  • Sealing… Often, the foam mixture is used to repair bathtubs, sealing passages, pipe joints and engineering systems. Technical voids are filled with material, due to which communications last longer.
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Schemes

An important point in the construction of buildings is considered to be wall insulation with foam using a special technology that provides for two installation schemes: external and internal.

If you do all the work with your own hands, then first you need to lay the expanded polystyrene outside. Then, high-quality waterproofing is installed from the inside, after which everything is sealed with foam insulation.

When carrying out external insulation, it is necessary to completely exclude the appearance of an air gap, otherwise condensation will collect on the surface, and in the future, fungus or mold will appear.

For this, the foam is sprayed onto the walls sheathed with expanded polystyrene from a spray can. The mixture should be applied evenly to the surface.

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Often, external thermal insulation is performed using not only mounting foam, but also foam insulation, which also has a foam structure and fills cavities well. It is sprayed into the crevices and onto the surface using a special apparatus that creates a certain pressure. Usually, according to this scheme, cavities are closed between the joints of the brickwork.… Thanks to this technology, full control of the filling of voids is carried out.

Usually the channels are filled with penoizol in a checkerboard pattern. To do this, holes are drilled on the facade and pouring is carried out, starting from the lower channels.When the foam begins to protrude from the row, go higher and continue pouring until the entire surface is insulated.

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As for the internal wall insulation, in this case it is worth remembering that the foam should be applied gradually to a previously prepared surface… The base is preliminarily cleaned of dust, dirt and moisture, and the remnants of old paint or plaster are removed. After that, the walls are primed. Then foam is applied.

The thickness of the mixture layer depends on the degree of freezing of the walls in winter. Therefore, the thinner their base is, the thicker the insulation should lie..

When the foam dries, you can proceed to further decorate the room. If the work is started before the mixture dries, then deformation of the front surface of the decorative material and its destruction are possible.

When spraying foam, it is worth adhering to certain safety measures: wear protective clothing, a respirator, goggles and gloves.

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Testimonials

Recently, most builders have chosen foam as their main insulation. They attribute this to the high performance characteristics of the material. Judging by the reviews, the foam is easy to install, so it can be used at home, insulating balconies or loggias. The material has proven itself not only as a heat insulator, but also as an excellent fixer.… Therefore, most homeowners, carrying out repairs, choose it for fixing door and window blocks.

Residents of apartments in multi-storey buildings, where not only heat, but also sound insulation is important, are also satisfied with the foam. Due to its unique structure, the mixture adheres tightly to the surface of walls and ceilings, reliably protecting them from the penetration of extraneous noise. In addition, many consider the main advantage of foam to be its strength and long service life.

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Tips & Tricks

Before you start decorating a building, you need to worry about its thermal insulation, which will affect not only the protection of the structure from moisture and temperature changes, but also the internal microclimate of the premises. Today there is an excellent possibility of building insulation with foam.

When performing installation with its help, you need to take into account some recommendations:

  • Foam insulation can only be started after a detailed assessment of the surface. The base must be carefully prepared: cleaned of dirt and dust, and dry well.
  • If there are cracks on the outside of the walls of the building, it is better to choose a polyurethane foam type. It can also be used as insulation for attics and floors if the veranda extension is open.

If it is planned to make a living room out of the attic, then polyurethane foam should be abandoned, especially if the windows face the south side.

The material can degrade when exposed to sunlight and produce harmful vapors.

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  • For thermal insulation of large areas, a fill from penoizol is suitable. In order to complete the installation work, you will need to purchase special equipment for spraying the mixture.
  • It is advisable to carry out insulation inside the building with polyurethane foam in cans. It can both close up wall defects and produce high-quality insulation in small areas. Polyurethane foam is a non-combustible insulation, which is characterized by a dense structure after hardening and consists of environmental components that are harmless to human health.
  • External thermal insulation must be performed in a direct way, the technology of which involves spraying foam using a special apparatus or balloon. However, if the surface has significant flaws, then the mixture should be applied in a thick layer using a special hose that pushes it. For this, several holes are pre-drilled in the wall.
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You can learn how to insulate an attic with polyurethane foam in cylinders by watching the video below.

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