National policy on exterior wall insulation, exterior wall insulation

The final construction is internal insulation or external insulation, it depends on the design, if the final review is to do external insulation, and the developer does internal insulation, it should be a fraud to consumers

If the design is changed to internal insulation, then the developer will have no problem, because the design change review has been approved, and there is no violation of the regulations!

As the owner, I can only eat Coptis chinensis dumbly, and the internal insulation and external insulation are somewhat poor!

Therefore, to determine whether the developer violates the rules, it depends on the acceptance drawings, which have everything you want, and then consider whether to use the law after reading it!

Look at the acceptance drawings, in line with the drawings, no way. If you don't meet the requirements, you can report it and complain to the quality inspection station. If you don't care about quality inspection, just go to the law.

But it's not easy to implement, because the developer is too powerful, he can influence the design institute, and the design changes can be completely obtained. The external and internal insulation are similar. It's just not feeling well.

There are a lot of things upstairs that have been talked about. What you said is simply that developers and builders save trouble and money, and the usable area of the house you buy is reduced, and it is certain that you will be able to exploit the loopholes. How to do it and whether it can be done depends on both sides of the game, and there seems to be a word overlapping behind the last word of the developer, and the result is difficult to say.

The insulation design is to pass the special insulation audit, if it does not pass the audit, it is illegal, if it passes the audit, it is legal.

From October 1, 2007, the insulation belongs to the compulsory inspection, and the external wall insulation is a must be done, the insulation design drawings must pass the review of the drawing review center, to the construction engineering bureau for the record.

If the owner has evidence that the developer did not do the external wall insulation, he can make a claim against the developer.

Look at the construction drawings and find the quality inspection station or the construction bureau how to complete the acceptance!

The Ministry of Housing and Urban-Rural Development of the People's Republic of China No. 1338 "Announcement on Issuing the Promotion and Application of Wall Insulation Systems and Wall Materials, and the Restriction and Prohibition of the Use of Technologies".

Article 1 These interim provisions apply to the fire design, construction and use of external thermal insulation systems and exterior wall decorations of civil buildings. Article 2 The combustion performance of the external insulation material of civil buildings should be Class A, and should not be lower than Class B2. Article 3 In addition to the implementation of these interim provisions, the design, construction and use of the external thermal insulation system and the fire prevention of the exterior wall decoration of civil buildings shall also conform to the relevant provisions of the current national standards and specifications.

Chapter 2 Wall Article 4 Non-curtain wall buildings shall comply with the following provisions: (1) Residential buildings shall comply with the following provisions: 1. For buildings with a height greater than or equal to 100m, the combustion performance of thermal insulation materials shall be Class A.

2. For buildings with a height greater than or equal to 60m and less than 100m, the combustion performance of the insulation material shall not be lower than B2 grade. When B2 grade insulation material is used, horizontal fire isolation belt should be set up on each layer. 3. For buildings with a height greater than or equal to 24m and less than 60m, the combustion performance of the insulation material shall not be lower than B2 grade.

When B2 grade insulation material is used, horizontal fire isolation belts should be set up every two layers. 4. For buildings with a height of less than 24m, the combustion performance of the insulation material should not be lower than B2 level. Among them, when B2 grade insulation material is used, horizontal fire isolation belts should be set up for every three layers.

Article 1 of the Technical Regulations for External Wall Insulation Engineering stipulates that under normal use and normal maintenance conditions, the service life of external wall insulation projects shall not be less than 25 years. All parts of the country have local standards on the type of provisions on the service life of external wall insulation.

Hello dear, yes, exterior wall insulation and fire prevention, this is a national strong article. Thermal insulation needs to meet the energy-saving calculation, if it does not meet the energy-saving and thermal insulation indicators, the project will not be established or even get the relevant certificates. In addition, the external wall insulation should also have fire resistance, which is a strong fire protection rule, and even higher than the building code, which is a mandatory clause.

The external insulation of the wall is a layer of insulation made on the wall outside the wall of our price. If we have been to the construction site of some new buildings and happened to be in time for the insulation, we will see that they will put a layer of white or dark gray foam board on the wall, which is called insulation board.

External thermal insulation is composed of thermal insulation decorative board, adhesive mortar, anchors, caulking materials and sealant, which are placed on the outside of the external wall of the building to realize the function of thermal insulation and decoration integration.

Hello, it's a pleasure to serve you! The materials for external wall insulation are as follows: First:

Benzene board, benzene board is now used more, but its thermal insulation effect is not ideal, it will absorb water, so the use of benzene board will generally do some waterproof measures. Second: extruded board, extruded board is much better than benzene board, thermal conductivity is lower than benzene board, slightly higher.

Third: polyurethane is a relatively high-end insulation material, but also the best performance, generally used in some places with extremely strict requirements in this regard, and because it is high, there are fewer residential buildings. Fourth:

Glass wool and rock wool, glass wool and rock wool have many similarities in performance, and many people are easily confused, but because glass wool feels better than rock wool, it is generally higher than rock wool. New exterior wall insulation materials: first:

XPS extruded polystyrene foam sheet. Also known as polystyrene extruded board (referred to as XPS); It has a perfect closed-cell honeycomb structure, and its density, water absorption, thermal conductivity and steam permeability coefficient are lower than other types of plate insulation materials, so it has the characteristics of good strength, light weight, impermeability, corrosion resistance, anti-aging, low quality, etc., and is widely used in the construction industry's thermal insulation, anti-freezing and thermal insulation of highways, railways, airports, squares, home decoration and other fields. Second:

Thermal insulation mortar. Thermal insulation mortar is a kind of ready-mixed dry mortar made of various lightweight materials as aggregates, cement as cement, mixed with some modified additives, and stirred and mixed by production enterprises. It is mainly used for building exterior wall insulation, and has the advantages of convenient construction and good durability.

Third: phenolic foam. Phenolic foam is internationally recognized as one of the most promising new insulation materials in the construction ranks.

Because this new material is essentially different from the usual polymer resin obtained by adding flame retardants, it does not burn in the fire, does not melt, and does not emit toxic smoke, and has the advantages of light weight, non-toxic, non-corrosion, heat preservation, energy saving, sound insulation, and low price Fourth: EPS board. EPS board, also known as benzene board and foam board, is the abbreviation of expandable polystyrene board.

It is made of expandable polystyrene raw materials through pre-hairing, maturation, molding, drying and cutting. It can not only be made into foam plastic products with different densities and shapes, but also can produce foam sheets of different thicknesses.

The requirements of the exterior wall insulation specification must be clear before construction, and every detail is very critical when choosing, which is helpful for the subsequent progress and quality. Zhongda Consulting will explain to you the requirements of the external wall insulation specification.

1. The construction and acceptance of the exterior wall and exterior doors and windows are completed, and the base surface meets the requirements of relevant regulations.

2. The ambient temperature of the normal construction of the external wall insulation system is 5 35.

3. The construction site should be connected by road, water and electricity.

4. The erection tools and scaffolding used in construction should meet the construction needs and be safe and reliable.

5. The mobile distribution box and water pipe used in the construction should be configured according to the construction needs.

6. The vertical and horizontal transportation facilities of power distribution materials are required to comply with relevant safety regulations.

7. The distance between the high-voltage wires in the construction operation environment and the construction site shall comply with the relevant regulations, and there shall be corresponding protective facilities.

8. Remove all obstacles on the wall to be insulated.

9. The wind force should not exceed level 5 when pasting the insulation board.

10. In order to ensure the quality of construction, the construction surface should avoid direct sunlight for a long time, and it is not suitable for construction in rainy days.

11. Construction tools: slotters, wallpaper knives, screwdrivers, scissors, ink fountains, palm brushes, electric mixers, plastics, mixing barrels, impact drills, electric hammers, trowels, supporting boards, 2m rulers, etc.

Legal analysis: The architectural design of severe cold and cold areas must meet the requirements of winter insulation, the architectural design of areas with hot summer and cold winters and mild area A should meet the requirements of winter thermal insulation, and the design of areas A and mild areas B should meet the requirements of winter thermal insulation in hot summer and warm winters.

Legal basis: Code for Thermal Design of Civil Search Hall Buildings (GB50176-2016) The building envelope structure should have the ability to resist the effect of outdoor air temperature and temperature fluctuations in winter, and the difference between the internal surface temperature and the indoor air temperature of the non-transparent envelope should be controlled within the scope allowed by this code.

The architectural design of severe cold and cold areas must meet the requirements of winter insulation, the architectural design of areas with hot summer and cold winters and mild area A should meet the requirements of winter thermal insulation, and the design of areas A and mild B should meet the requirements of winter thermal insulation in hot summer and warm winters.