In its structure gas silicate blocks readily absorb water, which can then lead to microcracks, and this affects the duration of operation. To solve this problem will help warming his hands silicate walls outside.
Why should insulate the outside walls
Insulation of the outside of the building will not only reduce energy loss, but also to save on heating.
With minimal skills of construction work can save considerably. Location of insulation from the outside will allow postpone the dew point of the interior walls. In this case, the house will be warm and the wall will remain dry.
If you place a heater inside, under different climatic conditions, the wall will syret. The main disadvantage of this method of insulation of homes gazoblokov -high likelihood of mold and mildew.
The moisture does not penetrate the blocks, but the outer layer under its influence can be broken. It is therefore very important to make a facade insulation from the outside, before finishing.
Materials for insulation: brands, types, characteristics
For silicate insulation of walls there is a wide range of materials that have their advantages and disadvantages.
Synthetic insulation or on the basis of natural minerals have a lot of positive properties:
- do not change shape under the influence of moisture;
- will not rot;
- have a long life;
- have low thermal conductivity.
To a great extent these properties are: mineral wool, polyurethane foam, polystyrene foam, expanded polystyrene. It should also be mentioned Thermopanel. This material appeared on the market relatively recently. Thermal panels are characterized by high building properties and give an excellent appearance. However, the cost is much higher than the cost thermopanels other heaters.
Materials are available in the form of a plate, which is useful for thermal insulation of walls of the house. In order to make the right choice, you need to compare the characteristics of these heaters and gas silicate.
When selecting insulation material for thermal insulation on the outside walls of gas silicate must be acquainted with their advantages and disadvantages.
Styrofoam
A common material for insulation of facades. The foam is characterized by good heat insulation ability and sound insulating properties and windproof. The material is easy to transport and has a light weight. In addition, it is cheap and has a simple installation. For better use gazoblokov foam 100 mm in thickness. The foam does not change its properties for a long time.
The most important indicator of the quality of foam is its density. Optimum density of the facade insulation material to the outside is 15 to 25 kg / m3. Typically the foam has a density mark PSB-S-25.
Mineral wool
This insulation material passes steam and is the most popular in construction. He will not only protect the wall, but also prolong gazoblokov service, as well as to avoid the problems that can arise when installing interior thermal insulation. Mineral wool insulation is characterized as a high sound insulating properties and flame resistance.
Mineral wool is sold under various brands, such as, KNAUF, ISOVER, URSA. Board thickness may be up to 200 mm.
Polyurethane foam
It refers to a group of porous gas-based polymers which contain polyurethane components.
Different mechanical strength, ease and ability to expand. This material is easy to apply and use in their work. However, the polyurethane foam has a low fire resistance. In addition, this material is afraid of many acid and alkaline solutions.
Expanded polystyrene
For the production of the material gas is used, by which the volume is created. It characterized by low thermal conductivity and resistance to moisture vapor permeability. Material is durable and harmless. There are varieties of fireproof material, which when exposed to flame can be damped.
Gas silicate is vapor-permeable, i.e., permeable to water vapor. To save this property, it is important to water vapor permeability of insulation material was not less than that of the facade of silicate blocks.
Polyurethane foam and have a low water vapor permeability, and basalt wool misses couples and helps to remove it from the heater. Therefore, most commonly used mineral wool. You can use other heaters, but there will be additional costs for forced ventilation system.
Important! To calculate the number of the selected heater is recommended to start with the total area of all walls. Further, the amount received from you subtract the sizes of all windows and doors. At the same time it is important that the stock was not less than 5%. Excess material can always be used on the farm.
Tools and materials
Before you begin the installation of insulation silicate walls, should prepare the necessary materials and tools. To work needed:
- The material for insulation.
- Glue.
- Special capacity to breed glue.
- Drill.
- Level.
- Dowels.
- Putty knife.
- Puncher.
- Primer.
- Plaster.
The preparatory work are in cleansing of the walls of the dirt and dust. This is necessary in order to provide quality adhesion adhesive with a heater.
The sequence of works on warming the walls of the outside blocks silicate mineral wool
The work on the facade insulation from the outside is carried out in several stages:
- Installing the vertical battens. The first row of boards should be located on the border of the cap.
After installing the furring desirable to cover them with a layer of an antiseptic. This will avoid rotting material. Instead of bars, you can use a metal profile.
- Stacking Hydro. Installation parogidroizolyatsii performed a continuous layer, starting from the bottom. It is important to make overlapping layers of not less than 15 cm and prokleivat joints vapor barrier tape.
- Installation of mineral wool. Connection to the outside wall by means of glue. Additionally, you can use for fixing dowels. When installing insulation necessary to ensure that the gap between the plates does not exceed 5 mm. If more than 5 mm, it can be formed cracks.
- Mineral wool slabs are laid as brickwork. Then fix the insulation layer at the joints and in the middle. It is recommended to leave the heater on for a while, so that he survived.
- Laying second layer Hydro. Fastening film is performed using a stapler. Additionally, you can lock the tape or nails.
- Installing kontrobreshetki. This allows the ventilation gap to evaporate moisture and ventilated surface Hydro.
- Application of finishing materials. As the outer skin can be used siding, decorative brick, etc.
Insulationworks recommended at a temperature of not less than 10 degrees and in the windless dry weather.
Thermal insulation of walls of the house of silicate blocks outside can be done with your hands, if you follow the instructions precisely.
Facade insulation using expanded polystyrene
Step by step guide home insulation using styrofoam outside:
- Using the adhesive paste polystyrene sheets into blocks and leave for 24 hours. Joints in corners and in the middle to score anchors for stronger fixing panels. For smooth masonry should use level. Do not worry if the seams are not the same.
- Fix the reinforcing mesh of fiberglass. This will prevent cracking of plaster and improve the adhesion of the material. Reinforcement begins with fixing angles and only then secured the entire surface from top to bottom.
- The surface of the plaster, paint and sheathing siding.
If used outside of polystyrene, additional protection is not required for home insulation. It is important to remember that the thickness of the plates for thermal insulation of the facade should be calculated taking into account the climatic features.
On a large selection of adhesive construction market there. It is possible to use ready-made dry blends (Kreisel 210, Ceresit CT85 et al.), Liquid adhesive composition (Bitumast). You can also use ready-made assembly glue (Ceresit CT 84 "Express", Tytan Styro 753, and others.). The adhesive should be applied at the perimeter of the plate, and additionally in some areas.
Installation of insulation to the walls of silicate blocks are not complicated and can be performed independently, thus saving money.