Wall insulation practices
Wall insulation practices, it is now the hottest time of the summer, the sun's rays directly to the house, for the irradiated room, people stay inside will be very hot, so many people will be in the choice of the room to do the sun insulation layer, the following is the usual practice of wall insulation.
First, what are the ways to insulate the interior wall 1, for the interior wall insulation way more, for example, we can directly in the top floor to lay a layer of insulation. The insulation layer can be laid with prefabricated concrete blocks, can achieve the purpose of heat insulation, of course, you can also choose a new type of insulation material. 2, you can take the method of covering heat insulation. Choose foam cement board or foam cotton, these materials are very good, laid directly on the top floor, can effectively use the principle of air insulation, and these materials have certain fire-retardant properties. 3, you can directly lay a layer of wood panels on the inner wall and the roof, this material is made of asbestos fiberglass ball combination, has a certain degree of thermal insulation properties, the inner wall insulation layer in general to reach 8 centimeters thick to be more useful. 4, can also be taken on the inside and outside of the wall are installed on the insulation layer, need to take a double row of concrete or choose a lightweight aggregate hollow brick wall to lay, in addition to the need to do a layer of air between the layer, can play a double insulation effect. Second, what are the insulation materials Summer heat, the temperature itself is relatively high, if you want to make the indoor cooler, we need to take certain measures of insulation, and choose the right insulation materials is the most fundamental solution. 1, there is a glass fiber insulation cotton, which belongs to the non-metallic materials, the main raw material is waste glass or glass balls, later after high temperature firing. Performance characteristics are superior, insulating, thermal insulation is also very strong, but also has a certain sound insulation effect, so it is widely used. 2, fiberglass is also a modern wall insulation material. 3, there are also polystyrene foam board or polyurethane foam board, these are very energy-saving and environmentally friendly materials, with sealing, heat insulation, sound absorption effect. 1, roof overhead insulation. The principle of roof overhead insulation is actually quite advanced `, because it is assumed that a layer of lightweight floor above the roof, can block the heat of the sun radiation, the natural wind can also pass through the gap between the two floor boards to take away the heat, so in the hot summer can be very good heat dissipation. Such roof overhead insulation cups are widely used in the 80's, but because the quality of the later insulation boards are relatively poor, thus shortening the service life, and maintenance is also more difficult, so it is slowly eliminated. So the concept of overhead roof insulation is advanced but the need to improve the quality of the insulated floor is the hard truth. And the status quo in our country is the manufacture of qualified insulation floor has become particularly easy, this is also let a person expressed great concern ah! 2, wall insulation. Wall insulation in the industrialized field is still relatively widespread, and then industrialized prefabricated requirements, precast concrete wall panels to replace the use of brick. In fact, the wall panels themselves can be made of sandwich insulation. Wall insulation is now generally external thermal insulation board, in fact, are not ideal, because of its cost and construction difficulties are not low, the effect is not good, the point is that there are also lead to fire safety hazards. There is also a wall insulation is between the two layers of walls with insulation materials, which is the traditional back wall also called double wall practice. Exterior wall insulation measures Hot areas of strong solar radiation in the summer, the outdoor heat is transmitted to the interior through the exterior wall, is the indoor temperature increases, resulting in overheating phenomenon, affecting people's work and life, and even damage to people's health. The external wall should have enough heat insulation capacity, specific measures are: 1, the surface of the external wall to do light-colored, smooth finish, such as the use of light-colored stucco, coatings or bricks, in order to reflect the solar radiation heat; 2, set up the ventilation interlayer, the formation of ventilated walls, to the circulation of air to take away a large amount of heat; 3, the use of multilinear holes in the concrete or lightweight aggregate concrete hollow block wall, or Use of composite walls; 4, set up closed air interlayer with aluminum foil, using the air interlayer heat insulation. 1, roof insulation measures The construction of the roof of the hot southern region can be divided into solid material insulation layer roof and with the air interlayer insulation roof, ventilation interlayer insulation roof, ceiling roof, attic roof, water storage roof and vegetation roof and many other types. The main insulation measures are: (1) light-colored finishes (such as light-colored stucco, coatings and tiles, etc.). (2) Increase the thermal resistance and thermal inertia of the roof, with a solid material layer or closed air interlayer (sticking aluminum foil) for roof insulation, to reduce the amplitude of heat transfer and temperature fluctuations of the roof. (3) the use of ventilated roof The use of internal ventilation of the roof, can be taken away in a timely manner during the day above the heat transfer, the night can also be on the roof of the role of heat dissipation and cooling. The attic roof also belongs to the ventilated roof. The design of the ventilated roof should pay attention to the use of the direction of the formation of air flow power, the height of the interlayer to 20 ~ 24cm or so appropriate, the inner surface of the interlayer should not be excessively rough, in order to reduce the resistance of the air flow, and the organization of the airflow in and out of the route. (4) the use of water storage roof The heat capacity of the water, and the water in the evaporation needs to absorb a lot of vaporization heat, thereby reducing the amount of heat transmitted to the interior of the room to reduce the surface temperature of the roof, to achieve the purpose of thermal insulation. (5) roof shading Roof shading is the use of modern architectural design of the roof as an active space to take an effective heat protection measures, can be used louvered board shade roof and climbing plants shade roof. (6) roof soil or soilless planting The plant can shade the sun, reducing the absorption of solar radiation on the roof; the photosynthesis of the plant will be converted from heat to biomass; plant foliage transpiration can be increased by evaporation of the heat dissipation; planting of plants in the substrate material (eg, soil) can increase the thermal resistance of the roof and thermal inertia. 2, exterior wall insulation measures (1) light-colored finish on the outside surface of the wall. (2) Increase the thermal insulation performance of the wall: Add a thermal insulation layer on the inside or outside of the wall; Use double-row or triple-row perforated concrete or light-aggregate concrete hollow block walls; It is desirable to use a heavy material such as concrete or bricks with a thickness of 10cm on the inside of the composite wall; Use an air interlayer with aluminum foil. When using a single-sided aluminum foil air interlayer, the aluminum foil should be located on the high-temperature side. (3) Walls can be made vertically green to shade the sun. In particular, the east and west exterior walls can be shaded by lattice elements or climbing plants. (4) Ventilation wall and ventilation shading wall. 3, the effect of the roof wall insulation measures Calculation of the total thermal resistance of the roof and exterior walls, the equivalent thermal resistance of the above energy-saving measures can be taken in accordance with the value of the additional Table 1-11. 4, window insulation Hot summer and cold winter areas Multi-story residential windows should be used casement windows. Building 1-6 layers of external windows and balcony doors of the airtightness level, should not be lower than the current national standard "building windows air permeability performance classification and its testing methods" (GB7107) the provisions of the level 3; 7 layers and more than 7 layers of external windows and balcony doors of the airtightness level, should not be lower than the standard provisions of the level 4.