What are the methods of exterior wall insulation commonly used in construction?

The external wall insulation of rural self-built houses refers to the thermal insulation treatment on the external wall surface of the building to achieve the purpose of energy conservation and emission reduction, warmth and heat insulation.

Common methods of external wall insulation are as follows:

1.Exterior wall insulation:

The insulation material is directly covered on the surface of the exterior wall of the house, and then the surface of the insulation material is waterproofed. This method is simple to construct, does not occupy indoor space, and has a remarkable thermal insulation effect.

2.Surface insulation:

Paste the insulation board on the surface of the exterior wall, and paste a layer of material (such as stone, ceramics, etc.) on the surface of the insulation board. This method is aesthetically pleasing and suitable for high-end buildings or preserved historic buildings.

3.Thermal insulation inside and outside:

Thermal insulation is applied to the interior and exterior walls of the house at the same time. Interior and exterior insulation can improve the insulation effect and also avoid the problem of changing the appearance of the house after the exterior wall is insulated. However, the construction is difficult and needs to occupy indoor space.

4.Air layer insulation:

Leave a certain layer of air on the surface of the exterior wall, and then install insulation materials in the air layer. Air layer insulation can improve the insulation effect and is also conducive to the moisture-proof exterior wall, but it is necessary to pay attention to the ventilation in the air layer.

5.Internal insulation:

That is, the insulation material is covered on the interior wall of the house. This method is simple to construct and does not occupy outdoor space, but the thermal insulation effect is not as good as that of external wall insulation.

In short, the choice of which external wall insulation method needs to consider the specific situation and personal needs of the house, and you can consult a professional architect or construction team to get the best insulation effect.

1 Exterior wall insulation form.

Mono-material thermal insulation exterior walls: aerated concrete, sintered thermal insulation bricks.

Composite thermal insulation exterior wall: According to the different positions of thermal insulation materials, it can be divided into internal thermal insulation, external thermal insulation and sandwich thermal insulation external walls. Thermal insulation and decoration integrated board.

Others: insulation blocks, etc.

2 Insulation technology for exterior walls.

In-wall insulation is the placement of insulation materials on the inside of the exterior wall.

Advantages: 1) The requirements for the technical indicators such as waterproofing and weather resistance of the veneer and insulation materials are not very high, and the gypsum board and gypsum plastering mortar can meet the requirements of use, and the materials are convenient;

2) The internal insulation material is separated by the floor slab, and the construction is only within the range of one floor height, and no scaffolding is required;

3) In areas with hot summer and cold winter and hot summer and warm winter, the internal insulation can meet the requirements;

4) For the energy-saving renovation of existing buildings, especially when the house is sold to an individual, the whole building (**: China insulation network) or the whole community is difficult to renovate, only the possibility of using internal insulation is greater. Therefore, in recent years, external wall insulation has also been widely used.

Disadvantages: 1) Due to the thermal bridge caused by ring beams, floor slabs, structural columns, etc., the heat loss is large;

2) Due to material, structure, construction and other reasons, the finishing layer is cracked;

3) It is not convenient for users to decorate and hang ornaments twice;

4) occupy indoor space;

5) When the existing buildings are renovated for energy saving, it will interfere greatly with the daily life of residents.

6) The wall is greatly affected by the outdoor climate, and the temperature difference between day and night and winter and summer is large, which is easy to cause cracking of the wall.

3. Exterior wall sandwich insulation technology.

Exterior wall sandwich insulation is to place the insulation material between the inner and outer wall pieces of the outer wall, and the inner and outer wall pieces can be made of concrete hollow blocks.

Advantages: 1) It forms an effective protection for the inner wall pieces and insulation materials, and does not have high requirements for the selection of insulation materials (**: China Thermal Insulation Network), polystyrene, glass wool and urea-formaldehyde on-site casting materials can be used;

2) The requirements for the construction season and construction conditions are not very high, and do not affect the winter construction. It has been used in Heilongjiang, Inner Mongolia, northern Gansu and other cold areas.

Disadvantages: 1) In non-severe cold areas, this kind of wall is still thicker than traditional wall;

2) There needs to be connectors between the inner and outer wall pieces, and the structure is more complex than that of traditional walls;

4) The outer wall is greatly affected by the outdoor climate, and the temperature difference between day and night and winter and summer is large, which is easy to cause wall cracking and rainwater leakage.

The main forms of building exterior wall insulation are internal insulation, external insulation, mixed insulation, and self-insulation.

1. Internal insulation technology.

Exterior wall insulation technology refers to the use of prefabricated insulation materials on the inner surface of the exterior wall paste, splicing, plastering or directly as a thermal insulation mortar layer to achieve the purpose of thermal insulation.

2. External thermal insulation technology.

External wall insulation refers to the technology of thermal insulation on the outer surface of the external wall, which is usually composed of thermal insulation layer, protective layer and fixing materials (adhesives, anchors, etc.), because it can reduce the impact of thermal bridges and protect the external wall from excessive temperature deformation stress, which is the most widely used thermal insulation practice at present, and it is also the thermal insulation practice vigorously advocated by the state.

3. Mixed insulation technology inside and outside.

Mixed internal and external thermal insulation refers to the use of external thermal insulation in the parts that are convenient for external thermal insulation operation, and the internal thermal insulation in the parts that are inconvenient for external thermal insulation operation (note: the internal and external thermal insulation of mixed thermal insulation technology are complementary, not superimposed).

Fourth, self-insulation technology.

Exterior wall self-insulation refers to, the wall itself material has the function of energy saving and heat resistance, through the selection of appropriate insulation materials and the adjustment of wall thickness can achieve the purpose of energy saving and heat preservation, common self-insulation materials are: steam pressurized concrete, shale sintered hollow block, ceramsite self-insulation block, foam concrete block, light steel wire mesh frame polystyrene board, etc.

What are the common types of exterior wall insulation in public buildings? What are the characteristics of each?

Common types of exterior wall insulation for public buildings are as follows:

1.Polystyrene board insulation system: Polystyrene board insulation system is a relatively common way to heat up exterior walls. It is characterized by simple construction, low cost and good thermal insulation effect, but because the material is flammable, it needs to be strengthened in terms of fire protection.

2.Mineral wool board insulation system: mineral wool board insulation system uses mineral fiber as the filling material, which is characterized by environmental protection, good thermal insulation effect and sound insulation effect, but if it is exposed to air for a long time, it will be damp and mildew, and the construction technology is high.

3.Exterior Insulation Coating System: An exterior wall insulation coating system is a coating based on a fine powder containing tiny air holes. It is characterized by easy construction and wide range of application, but the thermal insulation effect is relatively low.

4.Silicate insulation system: Silicate insulation system uses silicate board and silicate plastering layer for insulation. It is characterized by simple construction, environmental protection, anti-aging, and good fire performance, but it is relatively high.

5.Thin ceramic thermal insulation integrated board insulation system: Thin ceramic thermal insulation integrated board thermal insulation system is a new type of exterior wall insulation decorative material, which is composed of an internal thermal insulation layer, an intermediate composite layer and an external ceramic veneer layer.

It has the advantages of convenient construction, safety and environmental protection, good thermal insulation performance and beautiful appearance, and is suitable for insulation and decoration of external walls of various public buildings.

There are usually three forms of wall insulation, namely exterior wall insulation, exterior wall insulation, and sandwich insulation. Advantages of internal insulation of external wall: 1. The insulation material is compounded on the inner side of the load-bearing wall, the technology is not complicated, and the construction is simple; 2.

The strength requirements of thermal insulation materials are low, and the technical requirements are lower than those of external thermal insulation; 3.The cost is relatively low. Advantages of external wall insulation:

1. Wide range of application; 2. Protect the main structure and prolong the life of the building; 3. The effect of "thermal bridge" is basically eliminated; 4. Improve the dampness of the wall, 5. It is conducive to maintaining the stability of room temperature and improving the quality of indoor thermal environment; 6. It is conducive to improving the waterproofness and air tightness of the wall; 7. Facilitate the energy-saving renovation of old buildings; 8.The amount of insulation material can be relatively reduced; 9. Increase the usable area of the house. Sandwich insulation advantages:

The thermal insulation material is set in the middle of the exterior wall, which is conducive to the better protection of the wall itself to the outside world; The strength requirements for insulation materials are not strict. Disadvantages of internal insulation of external walls: 1. It is difficult to avoid the generation of "thermal bridges".

The inner surface of the wall is prone to condensation, dampness, and even mildew; 2. Poor waterproof and airtightness; 3. It is not conducive to the protection of the maintenance structure of the building; 4. Cracks in the inner insulation board is a common phenomenon. Disadvantages of external wall insulation: 1. The insulation layer is on the outside of the wall, the environment is harsh, and the requirements for the materials of the insulation system are strict; 2. The material requirements are matched and have good compatibility with each other; 3. High requirements are put forward for the weather resistance and durability of the insulation system; 4. The construction is difficult, and it is necessary to have a good quality construction team and technical support.

Disadvantages of sandwich insulation: 1. It is easy to produce thermal bridges; 2. Air convection is easy to form inside 3. Construction is relatively difficult; 4. Wall cracks are not easy to control; 5. Poor seismic resistance.

What are the insulation materials for celery finger walls? Six key points of construction.

Exterior wall insulation materials emerge in endlessly, and everyone is dazzled, so let's talk about it for you today, what are the common exterior wall insulation materials, and some construction points. Spine head cavity.

Common materials. Common exterior wall insulation materials include polystyrene foam board, extruded plastic board, rock wool board, polyurethane board, aluminum board, thin ceramic composite board, etc.

Construction points. 1.Choose the right material: choose the right exterior wall insulation material according to the wall structure, wall material, environment conditions and other factors.

2.Ensure that the base layer is dry and clean: before construction, it is necessary to ensure that the base layer of the wall is dry and clean, and remove oil and dust.

3.Ensure that the construction level is uniform: the material level should be uniform during construction to avoid omission or reapplication.

4.Ensure the quality of construction: Attention should be paid to quality control during construction to ensure that the adhesive of the insulation material is firm.

5.Avoid the phenomenon of thermal bridges: In the construction process, it is necessary to pay attention to avoid the occurrence of thermal bridges, especially in the parts of doors and windows, balconies, rainwater pipes, etc., and select appropriate thermal insulation materials for construction.

6.Ensure fire performance: Exterior wall insulation materials should have good fire performance to ensure the safety of the building.

If you want to decorate the dusty exterior wall, you must pay attention to related matters, such as construction methods, such as insulation materials, what are the external wall insulation materials? Today, I will answer them one by one for you.

First, the construction method of external wall insulation.

1. When the exterior wall is insulated, the fixed point between the wall and the base wall must be reliable, especially for high-rise buildings, so that the bearing capacity will be higher. Reliable and highly adhesive materials can be used to hold the two tightly together, especially for walls with insulation boards, this link must be paid special attention.

2. When the exterior wall is constructed with an insulation layer, it is necessary to pay attention to the fire performance of the system, and the dispersion must comply with the relevant laws and regulations of our country. There are many high-rise buildings that use flame-retardant polystyrene board, which is relatively flammable, so it is best to adopt relevant measures for fireproof construction, and there must be a fireproof isolation zone. The fire performance of organic insulation materials is very good, and it does not produce harmful gases.

3. The durability of the external wall insulation system must be good, generally speaking, its service life should be at least 25 years, so as to meet the use requirements. At present, the main material of the insulation system used in basic buildings is inorganic silicate material, because it has a very long service life.

2. What are the types of exterior wall insulation materials?

1. Thermal insulation mortar, it is a kind of ready-mixed dry mortar made by using various lightweight materials as aggregates, adding cement and cementitious materials, plus additives, and stirring, and its main role is to be used for external wall insulation.

2. XPS extruded polystyrene foam board also has a name called polystyrene extruded board, which has lower water absorption and thermal conductivity than other types of insulation materials, which is very corrosive, and has the effect of anti-aging, and has a wide range of applications, suitable for highway, airport, railway and other occasions for anti-freezing and thermal insulation.

3. Benzene board, there are many chances of using this material, but the thermal insulation effect is not too obvious, if you want to use this material, you also need to do a good job of waterproofing.

It can be seen that the external wall insulation decoration needs to pay attention to various problems, such as when the external wall is insulated, the fixed point between the wall and the base wall must be reliable, especially for high-rise buildings, so that the bearing capacity will be higher. At the same time, it is necessary to pay attention to the characteristics of external wall insulation materials to avoid wrong choices.

Exterior wall insulation is the mainstream insulation practice at this stage.

Downstairs is talking about the practice of insulation, not the simple practice of exterior wall insulation.

At this stage, the main practices of external wall insulation are:

1. Thermal insulation and decorative integrated board system, for example: Baffli calcium silicate board thermal insulation and decorative integrated board external insulation system; It is one of the most promising systems at this stage;

2. The traditional thin plastering system is a type of system with the largest building area in China, and it is also a type of system that is being replaced;

3. Dry-hanging stone system;

4. a glass curtain wall system;

5. Traditional insulation practice + face brick system;

The above five are the mainstream external wall insulation practices at this stage. As far as the development potential is concerned, the thermal insulation and decorative integrated board system is being popular in the construction industry with its good decorative effect, excellent weather resistance, imitation cracking, short construction period, high cost performance and other characteristics, and is expected to become the external thermal insulation system with the largest use area in the next ten years.

Buffley Thermal Insulation Decorative Integrated Board System.