In Soviet and post-Soviet times, construction did not pay attention to good thermal insulation of the room, necessary to save on heating. As a result, "Stalinka", "Khrushchev" and other houses built according to the old technology remained cold for a long time, especially the corner apartments of high-rise buildings. The rapid development of the construction market has led to a significant expansion of the range of materials used.
At the end of the 90s, mineral wool, glass wool and other cellulose-based insulation were very popular as insulation. Despite the good thermal insulation characteristics, they fade into the background. This is due to the significant dimensions of cellulose fiber boards, which reduce the usable space inside the room, as well as the emergence of new materials, such as liquid insulation. Reviews of experienced builders and ordinary citizens agree that the material is of high qualityperforms its functions. At the same time, cellulose-based insulation is still very popular due to its low cost, ease of operation and environmental friendliness.
Choice of thermal insulation material
Choosing the right insulation is a prerequisite for creating a warm and cozy home. It must have the following properties: water absorption, thermal conductivity, vapor permeability, fire resistance. The choice of insulation depends on the material from which the housing is built, climatic conditions, number of storeys and loads on them. There are a number of materials for interior insulation of a room. One of the most effective is liquid wall insulation. Reviews of builders confirm its quality.
What is liquid insulation?
The modern construction market is full of products from various manufacturers, including all kinds of heaters. Liquid insulation is used both outside and inside the building, thereby ensuring proper heat exchange (it retains heat in winter and coolness in summer). At the same time, it protects the room from the penetration of moisture, the formation of corrosion and mold, and eliminates the possibility of condensation in the corners. In general, the use of thermal insulation materials can significantly save on heating costs.
Liquid thermal insulation is a modern solution that allows not only to carry out high-quality thermal insulation of the room, but to make it more attractive. The material has a unique pasty consistency,thanks to which it can be easily applied to the most inaccessible places.
Liquid insulation is made on the basis of varnish and water. For indoor use, a water-based insulation is used, and in working conditions below 0 C - on a varnish basis. It is not necessary to use the services of specialists for home insulation, since the procedure is relatively simple and does not require specific knowledge.
The insulation has a pasty consistency and has good adhesion, due to which it is applied to any coating: concrete, brick, metal or plastic. The standard layer thickness is 1 mm. The result of the work should be a durable and elastic coating that can withstand temperature changes without cracking. At the same time, it does not burn, does not emit substances hazardous to he alth, and is also water and vapor-tight. High-quality liquid thermal insulation is able to perform its functions for up to 20 years. Applying several coats can raise the indoor temperature by 2-4 C in winter.
Liquid insulation in cylinders has several advantages:
- easy installation - usually applied with a brush;
- reducing heat costs by 25-30%;
- insulation does not change the appearance of housing;
- low cost. Insulation with panel materials is 30-40% more expensive;
- work can be started without preparatory work (the surface should be cleaned of dust, sometimes putty);
- for one workerday is insulated up to 100 m2 surface.
This type of insulation also has certain disadvantages:
- sensitivity to improper storage and transportation, short shelf life;
- relatively high cost;
- manufacturing companies do not provide accurate information about the thermal conductivity of the material and methods for their calculation;
- high-quality insulation sometimes requires up to 12 layers of material.
- Usually consumption is much higher than indicated by the manufacturer.
Liquid insulation is applied to the surface, previously cleaned of dirt. If old paint remains on it, then it is also removed. Metal surfaces significantly damaged by corrosion are treated with a special rust converter (a substance based on phosphoric acid). Before use, the insulation is diluted to a thick state. The warmer the surface, the more liquid the material can be. The surface is covered in the same way as with simple paint.
Liquid wall insulation polymerizes in 24 hours. For processing m2 surface in 1 layer, 1 liter of material is required. On average, 5-6 layers should be applied. The more layers, the better the room will retain heat. A decorative coating, such as plaster, can be applied to the insulation.
The following brands of heaters are common on the domestic market:
- the most popular is Corundum. This liquid wall insulation has high adhesion and resistance to all kinds of external influences. The thickness of one layer is less than 1 mm. The material is of high quality and high cost - 1 liter costs 350-600 rubles;
- "Astratek" is an eco-friendly insulation with anti-corrosion action. A long period of operation is a distinctive feature that this liquid insulation possesses. Reviews of builders confirm its durability - 30 years. The cost of the material is 400-500 rubles/l;
- "Akterm" is a heater with high thermal efficiency. A layer 1 mm thick is equivalent to a 5 cm layer of mineral wool. The material has a warranty period of 15 years. It is produced in several variations: "Standard" (water-based), "Nord" (nitro-based), "Facade", used for wood and brick, "Anticor" - for metal coatings. It goes on sale in 10 and 20 l buckets. The cost of 1 liter is 320 rubles. Thermal insulation can be used in the temperature range from -60 to +600 C;
- "Teplometta". According to the manufacturer, a layer of 1 mm is equivalent to 5 cm of mineral wool and 2.5 cm of expanded polystyrene. The material is easily tinted, it can be used at a temperature not lower than -20 C. The insulation has certificates confirming its environmental safety.
Liquid insulation can be applied to the surface with an airless spray. The thermal insulation effect lies in the fact that the insulation is a porous coating,the space inside which is in a rarefied state. It minimizes heat transfer.
The smoother the surface, the lower the consumption of insulation. For example, it will take an order of magnitude more to process a brick wall than to process a flat concrete one. If the insulation will be applied to absorbent surfaces (concrete, brick and others), then they should first be primed with acrylic paint.