The advantages and disadvantages of aerogel insulation for outside the wall or inside the wall
When buying a house, have you ever thought about asking the sales consultant of the sales department, is this house exterior insulation or external insulation? Although most of the houses on the market use aerogel insulation outside the wall, it is still necessary to understand when buying a house, isn't it? Below, we will introduce the advantages and disadvantages of the aerogel insulation and the aerogel insulation inside the wall.
1. What is the aerogel insulation outside the wall?
As the name suggests, aerogel insulation outside the wall is a kind of insulation method for placing the insulation layer on the outside of the main wall material. This is equivalent to adding protective clothing to the entire building.
1, energy saving, good effect
Since the aerogel insulation material is placed on the outer side of the outer wall of the building, the cold and heat bridge effects of various parts of the building can be basically eliminated; the heat insulation performance can be fully utilized, and the aerogel is required in the case of using the same insulation material. The thickness of the insulation material is small and energy saving.
2. Improve the indoor environment
The aerogel insulation outside the wall improves the thermal insulation performance of the wall and increases the thermal stability of the room. It also prevents the wetting of the surrounding wall by wind, frost, rain and snow to a certain extent, improves the moisture-proof performance inside the wall, and avoids the phenomenon of mildew, condensation and cold in the room.
3, extend the service life
The aerogel insulation layer placed on the outside of the building greatly reduces the influence of natural temperature, humidity and ultraviolet rays on the main structure, and can protect the main structure and prolong the life of the building. Due to the influence of temperature on the structure, the thermal expansion and contraction of the periphery of the building may cause cracking of some non-structural members of the building, and the external wall using external thermal insulation technology can reduce the stress generated inside the structure.
4, a wide range of applications
The aerogel insulation outside the building wall is not only suitable for buildings that need heating in the north, but also for air-conditioned buildings that need heat insulation in the south. It is suitable for the insulation of masonry exterior walls of brick-concrete structures, and also for the insulation of shear wall structures and external walls. It is suitable for both new houses and old houses.
Second, what is insulation inside the wall?
The so-called aerogel insulation in the wall is to add an aerogel insulation layer inside the outer wall structure. Its construction speed is fast and the technology is mature.
Compared with the aerogel insulation outside the wall, it has many problems. First of all, the insulation layer is made inside the wall, which reduces the use area of the commercial house; secondly, it affects the secondary decoration of the residents, and the interior walls cannot be attached with heavy objects such as decorative paintings, and the inner wall suspension and fixed objects are easily damaged. Internal insulation structure; again, it is easy to produce moldy phenomenon in the inner wall; afterwards, the internal insulation structure will cause two temperature fields on the inner and outer walls to form a temperature difference, and the thermal expansion and contraction of the outer wall surface is larger than that of the inner wall surface. The structure of the building is unstable, and the aerogel insulation layer is prone to cracks.
The Ministry of Construction clearly stipulates that the aerogel insulation materials in the wall shall not be used for the insulation construction of civil buildings in large cities.
Note: If the aerogel outside the wall is insulated, a fire will occur in the later stage. In serious cases, a building will be burnt, and the aerogel insulation inside the wall will not be; and the insulation layer is very fragile and placed in the outdoor wind and rain. The shower is easy to drop, and it will be more troublesome to repair later, and the color of the exterior wall that is added will have a color difference with the color of the outer wall before, which has an effect on the appearance. Strictly speaking, a building should be done outside the wall insulation and insulation inside the wall, but now it can really do less.
The advantages of aerogel insulation outside the wall are obvious, but there are obvious fatal shortcomings in the event of a fire. The aerogel insulation in the wall has many disadvantages and no significant advantages, and all aspects are flat.