The roof insulation material should reach several levels, the roof insulation thickness is 70, the c

Civil buildingsArticle 8 of the Interim Provisions on Fire Prevention of External Thermal Insulation System and Exterior Wall Decoration shall not be lower than B2 for buildings with non-combustible bodies with a fire resistance limit of not less than the roof base; In other cases, the combustion performance of the insulation material should not be lower than B1 level.

Article 9 The insulation layer around the junction between the roof and the outer wall and the roof opening should be set up with a horizontal fireproof isolation zone with a width of not less than 500mm.

Article 10 The roof waterproof layer or combustible insulation layer should be covered with non-combustible materials.

Article 13 and 14 of the Regulations on the Supervision and Administration of Fire Protection of Construction Projects (Ministry Order No. 106).

Civil buildings with external thermal insulation materials outside the scope shall all be included in the scope of random inspection.

Before the issuance of the new standard, the second article of the "Interim Provisions on Fire Prevention of External Thermal Insulation System and Exterior Wall Decoration of Civil Buildings" (Gongtong Zi [2009] No. 46) shall be strictly implemented, and the external thermal insulation materials of civil buildings shall be materials with combustion performance. Therefore, steel structure roof insulation cotton.

Materials with flammability should be used. (king tangled).

Roof insulation materials should reach Class A, from October 28 to December 31 last year, the Ministry of Public Security and the Ministry of Housing and Urban-Rural Development deployed the country to carry out special rectification work on fire safety of building exterior wall insulation materials. Through the special rectification, a large number of fire safety hazards of building exterior wall insulation materials have been rectified and investigated all over the country, and the occurrence of major fire accidents of building exterior wall insulation materials has been effectively prevented and curbed. It is reported that during the special rectification period, a total of 12,336 legal documents were issued across the country, 106 were requested to be listed for supervision, 496 were ordered to "stop three", 435 were temporarily sealed, 19 were enforced, 19 were fined 19.53 million yuan, and 89 people were administratively detained.

According to reports, all parts of the country attach great importance to the special rectification work, and the public security organs and housing and urban-rural construction departments of all provinces (autonomous regions and municipalities directly under the Central Government) have jointly formulated the implementation plan for the special rectification work, refined the work measures, and clarified the work responsibilities. At the same time, the local public security, housing and urban-rural construction departments closely cooperate, actively integrate the basic information resources of building supervision, jointly verify the buildings using external wall insulation systems, and widely mobilize township streets, community forces and social units to conduct investigations, and register one by one. According to statistics, during the special rectification period, a total of 38,999 buildings using external wall insulation materials were investigated across the country, including 17,466 high-rise buildings, accounting for 45% of the total, and 7,526 public buildings, accounting for the total; In public buildings and 50% of residential buildings, the combustion performance level and fire protection requirements of external wall insulation materials have been established; renovate and dismantle more than 10,000 square meters of high-temperature electrical equipment such as various billboards; 26,445 fire hazards were found, 23,482 hidden dangers were supervised and rectified, and the rectification pass rate was passed; 12,336 legal documents were issued, 106 were requested to be listed for supervision, 496 were ordered to "stop the three", 435 were temporarily sealed, 19 were enforced, 19 were fined 19.53 million yuan, and 89 people were administratively detained.

During the special rectification period, all parts of the country combined with the typical cases of fire of building exterior wall insulation materials in recent years, made full use of all kinds of **, widely publicized the hazards of using flammable exterior wall insulation materials and the necessity of special rectification work, set up fire safety reminder signs in the obvious position of the building, and issued leaflets to the surrounding residents, informing them that fireworks and firecrackers should not be set off around the building, stacking flammable and explosive materials and other matters, and strive to improve the fire safety awareness of residents. According to statistics, during the special rectification period, more than 10,000 publicity banners were hung across the country, more than 5,800 fire protection publicity activities were organized, more than 2.3 million copies of publicity materials were distributed, and more than 10,000 relevant personnel were trained, forming a strong special rectification atmosphere in the whole society.

In the work, on the basis of the special rectification work, all localities should actively explore the establishment of a normalized mechanism for fire safety supervision of building exterior wall insulation materials according to local conditions, and vigorously promote the use of new exterior wall insulation materials.

Through the special rectification work, a large number of fire safety hazards of building exterior wall insulation materials have been rectified and investigated, and the occurrence of major fire accidents of building exterior wall insulation materials has been effectively prevented and curbed. **: Guangxi Qinglong official website.

Dear, hello, I am happy to serve you, the answer is as follows: roof insulation thickness 70, coefficient, that construction materials should be about 45mm thick, according to my experience, the thickness of the building insulation board below 10 meters of external wall insulation should not be greater than 60mm, the thickness of the building insulation board above 10 meters should not be greater than 50mm, and the thickness of the insulation board of doors and windows should not be less than 20mm. The insulation board is easy to understand, which is the board used to insulate the building. The insulation board is a rigid foam board made of polystyrene resin as raw material plus other raw materials and polyinclusions, injected with catalyst while heating and mixing, and then extruded and molded, which has moisture-proof and waterproof properties, which can reduce the thickness of the building envelope structure and increase the indoor use area by holding the beam.

The thickness of this system is calculated as the floor area. The special binder pastes the polystyrene board with 50 thicknesses, the rubber powder polystyrene particle leveling is 10 thick, and the anti-cracking mortar composite alkali-resistant glass fiber grid board is 5 thick, and the thickness of 50 + 10 + 5 = 65 is counted. First-class Fleurs insulation material brand:

Fleur|Model: First Class Fleur|Material: nbr**:

Element 2Thermal conductivity of first-class Flears insulation material:

Commonly used roof insulation materials can be divided into bulk lead insulation materials, on-site pouring insulation materials, and plate insulation materials.

Plate insulation materials: mainly polystyrene board, aerated concrete board, foam plastic board, expanded perlite board, expanded vermiculite slab, etc. This material has the advantages of fast construction speed, good thermal insulation effect and avoiding wet operation, and is widely used in engineering.

If possible, it is best to use more than two layers of plates to form an insulation layer, and deal with the joints between the plates to avoid the phenomenon of thermal bridges.

Answer] :d house Honghui surface insulation material category:

1) Plate materials: polystyrene foam, rigid polyurethane foam, expanded perlite products, foam glass products, aerated concrete blocks, foam concrete blocks.

2) Fiber materials: glass wool products, rock wool, flooded cotton products.

3) Overall material: spraying rigid foam polyurethane mattle, cast-in-situ foam collapse concrete.

"Interim Provisions on Fire Prevention of External Thermal Insulation System and Exterior Wall Decoration of Civil Buildings".

1. For buildings with a height greater than or equal to 100m, the combustion performance of the insulation material 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.

This is the latest requirement for building facades, the policy introduced by the state.

The roof is not specifically proposed, and the façade must be Grade A! The insulation materials used for the roof and exterior walls are rock wool boards, inorganic insulation mortars, and phenolic boards. A-level standard, easy construction, high plasticity, good adhesion, light square meter material.

1. China's national standard GB8624-97 divides the combustion performance of building materials into the following grades.

Class A: Non-combustible building materials: Materials that rarely burn.

B1 grade: flame retardant building materials: flame retardant materials have good flame retardant effect. It is difficult to spread quickly when it encounters an open flame in the air or under the action of high temperature, and the combustion stops immediately when the fire source is removed.

B2 grade: flammable building materials: combustible materials have a certain flame retardant effect. In the air, it will burn immediately in case of open flame or high temperature, which can easily lead to the spread of fire, such as wooden columns, wooden roof trusses, wooden beams, wooden stairs, etc.

Class B3: Flammable building materials: without any flame retardant effect, extremely flammable, and very fire hazard.

2. The external wall insulation material is divided according to the fire protection level.

1.Thermal insulation materials with class A combustion performance: rock wool, glass wool, foam glass, foam ceramics, foamed cement, closed-cell perlite, etc.

2.Thermal insulation materials with B1 combustion performance: extruded polystyrene board (XPS) after special treatment, polyurethane (PU), phenolic, rubber powder, polystyrene granules, etc.

3. Thermal insulation materials with B2 combustion performance: molded polystyrene board (EPS), extruded polystyrene board (XPS), polyurethane (PU), polyethylene (PE), etc.

gb50016 6．7．10

When the fire resistance limit of the roof panel is not less than 1 00h, the combustion performance of the insulation material should not be lower than B2 level; When the fire resistance limit of the roof panel is less than 1 00h, it should not be lower than B1 grade. The external thermal insulation system using B1 and B2 insulation materials should use non-combustible materials as a protective layer, and the thickness of the protective layer should not be less than 10mm.

When the roof and exterior wall insulation system of the building are made of B1 and B2 grade insulation materials, the non-combustible materials with a width of not less than 500mm should be used to separate the roof and the exterior wall.

The combustion performance grades of roof insulation materials include A, B1, B2 and B3.

1. China's national standard GB8624-2012 divides the combustion performance of building materials into the following grades.

1. Class A: non-combustible materials (products).

2. B1 grade: flame retardant materials (products).

3. B2 grade: combustible materials (products).

4. B3 grade: flammable materials (products).

2. The main parameters and concepts of the grading criterion:

1. Material: A mixture of a single substance evenly distributed.

2. Burning droplets and particles. Substances or particles that are separated from a specimen during a combustion test.

3. Critical thermal radiation flux. The thermal radiation flux at the point where the flame is extinguished or the farthest heat radiation flux to which the flame travels at 30 minutes of the test.

4. Combustion growth rate: figra. The maximum value of the heat release rate value of the specimen combustion to the ratio of its corresponding time value is used for combustion performance classification.

It refers to the combustion growth rate index when the heat released from the combustion of the sample is reached. It refers to the combustion growth rate index when the heat released from the combustion of the sample is reached.

5、thr600s。The total amount of heat released from the specimen within 600 seconds after the start of the test (mj).

Which aspect of the grade refers to, fire rating A B1 B2 ordinary.

Class A is inorganic materials: dry powder, composite silicate coil, coating, plate, etc., vitrified microbeads, mortar.

Grade B includes polyurethane, benzene board, and extruded plastic board. It mainly depends on the amount of flame retardant added to distinguish whether it is B1B2 or ordinary materials.

There are new A-grade materials such as HFS HF and other new A-grade materials with high recognition in the market

It can be broadly divided into the following categories:

1. Exterior wall insulation materials:

1. Portland insulation material 2, ceramic insulation material 3, rubber powder polystyrene particles 4, steel wire mesh cement foam board (Shule board) 5, extruded plastic board XPS 6, rigid foam polyurethane on-site spraying, rigid foam polyurethane insulation board 7, foamed cement board 8, Class A inorganic fireproof insulation mortar;

2. Roofing materials:

1. Ceramic insulation board 2, XPS extruded board 3, EPS foam board 4, perlite and perlite brick 5, vermiculite and vermiculite brick 6, foamed cement 7, phenolic foam insulation board;

3. Heating and air-conditioning materials

Phenolic resin, polyurethane waterproof and thermal insulation integration, rubber and plastic sponge, polyethylene, polystyrene foam, glass wool, rock wool;

Fourth, steel structure material:

Polystyrene, extruded plastic board, polyurethane board, glass wool roll felt, etc.;

5. Inorganic insulation materials:

Foamed cement, YT inorganic active wall insulation material.