When insulating the walls of an apartment or a house, the first thing to be checked is the quality and efficiency of the insulation. How else? Because the hope for a long life of the insulation must justify the costs. The appearance of polyurethane, with its powerful ability to adhere in the form of a cloud of foam on the walls of the house, made a furor.
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Warmer, even warmer ...
The quality of house insulation has been and remains an urgent problem. When choosing a heater we try to learn in detail about its performance, technical characteristics and application.
It's no secret that close attention is paid to the most promising construction materials and technologies from the point of view of the consumer. Polyurethane is no exception. What attracts the insulation of the house with polyurethane?
Being deservedly the leader in the insulation segment, polyurethane foam is a universal monolithic material that provides seamless spraying.
Working surfaces, which can be applied with polyurethane foam, can have any complexity, shape, presence of irregularities and joints. The monolithic heat insulation surface with foamed polyurethane safely closes any existing gaps and voids. Absolutely clean from the ecological point of view, the material is resistant to rotting, the appearance of bacteria.
This viability of polyurethane is due to excellent thermal conductivity coefficient of 0.022-0.028 W / mK. Therefore, the title "best" is justified by the practice of use and application.
Field of application of polyurethane
The field of application of polyurethane insulation is large-scale and tends to grow. Applications include automotive and construction. Foam spraying of polyurethane is used throughout the following types of houses:
• panel and panel
• wooden and lumber
• gas silicate and brick
• buildings made of concrete slabs or blocks.
The reason for such a successful application for insulation with polyurethane is the excellent adhesion of the material. Therefore, for complex architectural forms and elements, whether it be arches, ledges or columns, the application of the material is made without difficulty. This material equally well adheres to vertical and horizontal surfaces, forming a monolithic heat-insulating layer.
Thermal insulation of the roof with polyurethane, repair of the damage to the roof, located at any angle, will make the insulation quickly and with significant savings in material costs. For example, covering and warming the roof with polyurethane will save about 70 percent of the time compared to the traditional methods of thermal insulation. Modern polyurethane sealant for outdoor use - an excellent helper for sealing joints. Such a sealant can provide reliable protection against any moisture, easily solve complex problems.
But polyurethane uses special demand for the warming of walls.
What is the relevance and perspective of polyurethane wall insulation
Warming with polyurethane is considered a young, but quite promising method. This method is distinguished by such qualitative indicators:
• fast and energy-consuming process
• simplicity of technology
• quality of the applied layer.
It is on these indicators that the practice of warming works is built. And if you add a weighty argument that the insulation with polyurethane can be carried out with your own hands, then it's time to learn this.
Technology of spraying with polyurethane
Spraying with polyurethane foam is carried out with the use of special equipment - apparatus and a high-pressure installation for spraying and pouring.
Sputtering technology externally resembles the process of painting using a manual spray gun. Two-component systems are used as the composition for the sputtering, which consist of isocyanate and polyol. The principle of technology is based on chemical reaction after direct mixing of components. Therefore, it is recommended to work quickly, because you have only a few seconds left to create a monolithic layer of synthetic material.
The capacity of the high-pressure installation for pouring leaves from 1.2 kg / min at a basic ratio of components of 1: 1 or 1: 1.2. The operating pressure in the air supply system is 0.4-0.6 MPa.
The spraying of the PPU with its own hands became real due to the appearance of disposable sets for application. Therefore, if you intend to insulate or seal the seams with a small working surface area, then it is not worthwhile to hire a team of 3 people with a transport installation for application.
Acquire the equipment for spraying polyurethane foam. The equipment represents two cylinders of two-liter capacity, equipped with a flexible hose, gun and nozzles-nozzles.
In the complete set of delivery of the installation, the obligatory element is a sprayer and hoses, the length of which can be adjusted manually.
The entire process of continuous spraying ultimately leads to the formation of a waterproof seamless coating. Due to the high productivity of spraying operations, it is not necessary to erect scaffolding and floors. Warming of the lower part of the walls of the house can be made standing on the ground.
How to spray polyurethane on the walls, you can see in this video.
With the use of PPU it is possible and necessary to produce insulation not only of walls, but also facades, as well as loggias and inter-panel seams. Polyurethane is an excellent waterproofing pipe coating in heating mains.
How to make external insulation of walls
There are external or facade insulation of walls with polyurethane of the following types:
• plaster facade
• ventilated facade
• brick facade.
For each type of insulation there is a certain technology. Stucco facade is the most popular way to insulate walls. The creation of a plaster facade involves carrying out preparatory work, which will include cleaning the walls of the old cladding, dust and fragments of the structure. Then the wall is wetted with water and a layer of foam is applied using the installation.
For external insulation of walls by the type of "ventilated facade" it is necessary to mount a lath of metal profiles or wooden bars. Further application of the insulation will not be different from the thermal insulation of the plaster facade.
Internal spraying of polyurethane foam
In addition to external insulation of walls with the use of polyurethane, internal spraying can be carried out. And, mind you, the technology does not practically differ from the external insulation of the walls. The working surface is prepared, the old coatings are removed.
Then the wall is moistened and a layer of mounting foam is applied. As the spraying process is applied, the foam expands in volume and fills the cavities. After the final hardening of the insulation, the foam layer is treated with a primer for better adhesion with a decorative finish. Warmed up in this way, the walls can be sewed with lining, plasterboard or wallpaper - a matter of taste.
In this case, the interior trim will be similar to the ventilated facade.
Having learned how to make PPU spraying yourself, your home Master status will increase dramatically, you will be smiling after unknown old women, and gently greet neighbors on a country house.
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