For commercial housing, what is the difference between external wall insulation and external wall in

In general, there are pros and cons, due to the major defects of condensation and dew condensation in the internal insulation (condensation affects the insulation effect after it occurs, and it will shorten the life of the material).It is also easy to breed moisture mold and affect indoor comfort and residents' health), relatively speaking, there are no particularly serious disadvantages of external insulation.

Therefore, generally speaking, it is more recommended to have external thermal insulation of external walls, such as the classic textbook Liu Xiaotu "Building Physics" of China Construction Engineering Publishing House, and some thermal insulation transformations in North China have indeed adopted external thermal insulation, and the construction does not affect indoor use and wall decoration. However, when I was an undergraduate, I heard the head of our department (Professor Qian Xiaoqian in the direction of building materials) mention it in an academic report.

There may be fire hazards in the external insulation of the external wall (the CCTV building ** incident in the past few years), and some studies, including his own related research on the subject, have demonstrated that if the construction technology is appropriate to avoid condensation, the internal insulation is actually more suitable for some special areas (such as the hot summer and cold winter areas in the middle and lower reaches of the Yangtze River).

The latest technology is a comprehensive insulation inside and outside, which has the advantages of both and avoids significant defects. Thermal insulation is not because the concrete wall is not insulated at all, but the thermal conductivity of concrete is large, the thermal insulation effect is very poor, the internal insulation system makes the insulation inside the wall, and the concrete is easy to transfer external heat to the internal insulation.

Due to the temperature difference between indoor and outdoor, it is easy to condense before the insulation and the wall, and for a long time, the water will penetrate into the inner wall through the internal insulation, and there will be water leakage, mold, peeling, falling off and other phenomena. The external insulation system can be the opposite, it can isolate the wall from the outside world, and the heat is blocked on the outside of the insulation layer, and it is not suitable for condensation.

Moreover, the external thermal insulation system is a water-repellent and breathable system, which can also block a certain amount of water seepage and reveal internal moisture. External insulation, internal insulation, and sandwich insulation are all ...... that have no problem if you want to be qualifiedBut there are basic commonalities between the three.

First, the insulation layer must be laid continuously.

Clause. Second, the external insulation of the main structure must be ......To put it bluntly, these three forms of insulation belong to the sandwich insulation ......External thermal insulation is actually a sandwich insulation with a thinner outer protective layer; The inner insulation is actually the sandwich insulation with a very thick outer protective layer, the inner protective layer is much thinner, the outer protective layer is connected to the main structure, and the inner protective layer is connected to the outer protective layer; Sandwich insulation is that the outer protective layer is connected to the inner protective layer, and the inner protective layer is either connected to the main structure, or it is the main structure ......External insulation and sandwich insulation are actually the same thing......The difference between the internal insulation and the two is that the outer protective layer of the internal insulation is too thick and heavy, and the connection points between it and the main structure are few and large, and the thermal bridge problem is more serious.

External insulation is to keep the heat out and will not affect the home decoration. Internal insulation is to block the heat indoors, and it will affect the interior wall decoration.

The so-called external wall insulation construction is to add an insulation layer to the inside of the external wall structure.

Its advantage is that the construction speed is fast, and the second is the maturity of the technology. However, there are also many problems, first of all, the insulation layer is used as the interior of the wall, which reduces the usable area of the commercial house; The second is to affect the secondary decoration of residents, the interior wall can not hang heavy objects such as decorative paintings, and the internal wall hanging and fixed objects are easy to damage the internal insulation structure; Thirdly, it is easy to produce mold and other phenomena such as internal walls; Finally, the internal insulation structure will cause two temperature fields to appear on the inner and outer walls, forming a temperature difference, and the thermal expansion and contraction of the external wall surface is greater than that of the inner wall, which will produce instability to the building structure, and the insulation layer is prone to cracks.

The so-called external wall insulation is made on the outside of the main structure, which is equivalent to adding a protective clothing to the whole building. Its advantages: first, it can protect the main structure of the building and prolong the life of the building; the second is to increase the use area of commercial housing; The third is to avoid the formation of heat dissipation channels by the external wall ring beam structure column beam doors and windows, and effectively prevent the "thermal bridge" phenomenon that is difficult to overcome by the internal insulation structure.

External thermal insulation is a kind of thermal insulation energy-saving technology that is vigorously promoted at present, and the state not only improves the technical construction process materials of external thermal insulation of external walls, but also formulates relevant regulations at the legal level to assist.

The first choice is outdoor insulation, so that the insulation effect is good, and it does not occupy indoor space, but it belongs to the category of infrastructure, and it has been formed.

If possible, it should be kept warm outside. If you do insulation indoors. Gyppool board needs to be added to the outside of the extruded plastic board. Otherwise, cracks will appear. It also takes up a lot of space.

The general trend now is external wall insulation.

Internal insulation will reduce the indoor usable area, and the fire protection requirements are strict, and it is also prone to cold bridges.

There are many kinds of external thermal insulation, which can be discounted and preferred.

Now the integrated finished board of thermal insulation and decoration is very mature, which is better than the thin plastering of mortar and the thin plastering of benzene board!

Advantages of external wall insulation: 1Wide range of applications; 2.

Protect the main structure and extend the life of the building; 3.The effects of thermal bridges are largely 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 air tightness of the wall waterproof box; 7.It is convenient for energy-saving renovation of old buildings; 8.

The amount of insulation material can be relatively reduced; 9.It does not occupy the usable area of the house. Cons:

1.Strict requirements for insulation materials; 2.It puts forward high requirements for the weather resistance and durability of insulation materials; 3.

The material requirements are matching, and the system has high requirements for crack resistance, waterproof, water repellent, breathability, seismic resistance and wind pressure resistance; 4.It is necessary to have a strict construction team and technical support. Advantages of internal insulation of exterior walls:

1.The insulation material is matched on the inner side of the load-bearing wall, the technology is not complicated, and the construction is simple and easy; 2.The strength requirements of insulation materials are lower, and the technical performance requirements are lower than those of external wall insulation; 3.

The cost is relatively low. Cons: 1

It is difficult to avoid the generation of thermal bridges, and the inner surface of the outer wall of the thermal bridge is prone to condensation, dampness, and even mildew and dripping; 2.The internal insulation shall be provided with a vapor insulation layer to prevent condensation of the wall; 3.The airtightness of the waterproof box is poor; 4.

It is not conducive to the protection of the building envelope and will shorten the service life of the building; 5.Cracks in the inner insulation board are more common. In general, the external insulation of the exterior wall is better than the internal insulation of the external wall.

Exterior wall insulation The insulation layer is made on the exterior wall.

Exterior wall insulation The insulation layer is made on the interior wall.

1. Structural protection is different

The advantage of external wall insulation is that it is more conducive to the protection of the main structure of the house and the extension of the life of the building.

If the external insulation of the exterior wall becomes the internal insulation of the exterior wall, the load-bearing wall and parapet of the exterior wall will omit the insulation material, and the mortar thickness of the exterior wall will also become thinner.

2. The thermal insulation effect is different

The external thermal insulation structure of the exterior wall can promote the indoor temperature of the house to maintain a relatively constant temperature, which is conducive to improving the quality of the indoor thermal environment. The material requirements for external wall insulation are stricter and more demanding than those for external wall internal insulation. The internal insulation of the external wall is prone to mold and other phenomena of the internal wall.

The internal insulation structure will cause two temperature fields to appear on the interior and exterior walls, forming a temperature difference, which will cause instability in the building structure.

In the insulation scheme of rural self-built houses, interior wall insulation and exterior wall insulation are two common methods. So how do you choose? Let me explain it to you.

Advantages and disadvantages of internal insulation.

Pros:1The construction is simple and convenient, does not occupy outdoor space, and can reduce the condensation on the surface of the indoor wall.

2.Interior wall insulation can also protect the wall and increase its service life.

Cons: 1It cannot effectively prevent cold and hot bridges, and the insulation effect is relatively poor.

2.It occupies indoor space, so it will reduce the usable indoor area and affect the comfort of living.

3.It is necessary to pay attention to moisture-proof to avoid moisture and mildew of insulation materials.

Advantages and disadvantages of external thermal insulation.

Pros:1Baowen Tan has a good effect, which can effectively prevent cold and hot bridges and improve the overall thermal insulation performance of the house.

2.Exterior wall insulation can also improve the appearance of the house and increase the economic value of the house.

3.Exterior wall insulation generally adopts hanging boards, exterior wall insulation systems, etc.

Cons: 1To occupy outdoor space, it is necessary to consider factors such as exterior wall materials, insulation materials, and thickness of insulation layer, and the construction difficulty is relatively large.

2.Since the exterior wall insulation needs to take into account the appearance of the building, the construction period is relatively long.

Summary:1The house has been built, and the indoor space is relatively tight, you can consider the internal wall insulation;

2.The house is still in the process of construction, and the overall thermal insulation effect and exterior decoration need to be considered, and the external wall insulation can be considered.

The walls of the house are an important part of the building, and there are external walls and interior walls. What is the difference between the insulation layer of the exterior wall and the interior wall of the house? PChouse will take you to find out.

1. Differences in definitions.

External wall insulation refers to the insulation layer placed on the outside of the theme wall, which is equivalent to adding a layer of "clothes" to the building, which is currently a thermal insulation method strongly recommended by the state. The so-called internal insulation is to add another layer of insulation layer to the exterior wall structure, if it is the kind of skilled master, the operation is very fast.

2. Differences in performance.

The external thermal insulation wall plays a direct role in improving the thermal insulation of the external wall, and the thermal insulation inside the external wall will also increase the thermal stability of the interior. However, there is a fatal drawback that once a fire occurs, the entire building will be burned down in serious cases. Internal insulation can avoid this problem.

And the outer insulation layer is very fragile, and it is very easy to fall off when installed outdoors for a long time in wind and rain, even if it is repaired later.

With the development of the construction industry, many people have begun to pay attention to the exterior wall of the building, so what is the difference between the use of ordinary exterior walls and the insulation of the exterior wall in the building? Let me explain it to you.

The advantages and disadvantages of ordinary exterior walls and thermal insulation exterior walls are as follows: Soling limbs.

Ordinary facades: Pros:

1.The construction is relatively simple and the cost is relatively low;

2.The wall thickness is large and the durability is high;

3.The sound insulation effect is good, and the sound propagation is relatively small.

Cons: 1The thermal insulation and thermal insulation performance is low, which is easy to cause heat loss, which is not conducive to energy conservation;

2.There is a phenomenon of cold and hot bridge, and the surface of the wall is easy to condense and fog, and it is easy to breed mold.

Insulated facades: Pros:

1.Better thermal insulation performance and thermal insulation performance, which can reduce energy consumption and indoor temperature fluctuations, save energy and protect the environment;

2.It avoids the phenomenon of cold and hot bridges, ensures that the surface of the wall does not condense, and improves indoor air quality;

3.The construction is simple and beautiful, and it is easy to maintain.

Cons: 1The cost is relatively high;

2.Fire performance needs to be considered in the world, and the use of flammable and explosive materials will lead to safety hazards.

The present source of cherry trembling. Trend.

Exterior wall insulation.

Inner insulation. Reduction of indoor usable area.

And the fire prevention requirements are strict.

Easy. The phenomenon of cold bridges.

There are many types of external insulation.

Defeat the election.

Appear. Thermal insulation.

Embodiment. The pinboard has been.

Ripe. Plastered thinner than mortar.

Benzene plates are thinly plastered.