Code for Construction of External Wall Insulation-Construction Technology of External Wall Insulation

External wall insulation refers to a kind of thermal insulation material used in wall building, which is mainly composed of polymer mortar, glass fiber grid cloth, flame retardant molded polystyrene foam board or extruded board. It has the functions of thermal insulation, waterproof and decorative surface, and is the first choice material for external wall thermal insulation of modern buildings. Today, let's learn about the external wall insulation construction specifications and external wall insulation construction process.

Code for Construction of External Wall Insulation-Construction Technology of External Wall Insulation

Construction scope of external wall thermal insulation

1, Scope of application of this procedure: construction and acceptance of external thermal insulation system of industrial and civil buildings with polystyrene board as thermal insulation material, polymer bonding mortar as bonding material, polymer plastering mortar as plastering layer, alkali-resistant glass fiber plastic-coated grid cloth as reinforcing material and fastening nails as auxiliary anchorage.

2. Product material requirements: The technical performance of all materials used in external wall insulation construction shall meet the relevant national standards.

3. Requirements of construction personnel: Organize the construction team according to the project scale and schedule requirements. Before the project starts, the construction personnel should be educated in ideology, technology, quality and safety to ensure the quality and progress of the construction project.

4. Construction environment requirements: The normal operating environment temperature of external wall insulation construction is 5℃~35℃.

Construction requirements for external insulation of external wall

1, the construction and acceptance of external walls and doors and windows have been completed, and the base surface meets the requirements of relevant specifications.

2. The ambient temperature for normal construction of external wall insulation system is 5℃-35℃.

3, the construction site should have roads, water, electricity.

4. The erection tools and scaffolding for construction shall meet the construction needs and be safe and reliable.

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

6. The vertical and horizontal transportation facilities of distribution materials shall comply with relevant safety regulations.

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

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

9, paste insulation board when the wind can't exceed 5.

10, in order to ensure the construction quality, the construction surface should avoid long-term direct exposure and should not be constructed in rainy days.

1 1. Construction tools: slotting machine, wallpaper knife, screwdriver, scissors, Mo Dou, brown brush, electric stirrer, plastic, mixing barrel, impact drill, electric hammer, trowel, thread supporting plate, 2m guide rule, etc.

Key points of external wall insulation construction

1, grassroots cleaning.

2, metope measurement, elastic line, hanging line.

3. Paste the flip grid cloth.

4. Paste polystyrene board.

5. Anchor fixation.

6. When the joint surface of polystyrene board is uneven, coarse sandpaper lined with wood square should be used as the base.

7, wipe the bottom plastering mortar.

8. lay a grid cloth.

9. Plastering polymer mortar.

10, acceptance.

Standard for quality acceptance of external wall insulation construction

1, construction quality inspection methods and standards

(1) After each working procedure is completed, check the flatness in all directions with a 2m flat ruler, and check the verticality with a line falling ruler. Standard is verticality and entrainment deviation is not more than 3 mm..

(2) Check the thickness deviation of the insulation layer by acupuncture to determine whether the actual thickness of the insulation core plate meets the design requirements.

(3) Random sampling inspection, every 100_ sampling points. If this point does not meet the design requirements, increase the sampling inspection points to every 30_ sampling points and make records, waiting for mathematical statistics to evaluate the quality.

(4) The quality control inspection in the construction work shall be organized by the quality inspector to control the whole process of the construction quality, with emphasis on the process quality, and the next process can only be carried out after passing the inspection.

2, engineering quality evaluation and acceptance criteria

(1) The wall surface is smooth, with no repair marks and no summer-planting, and the impression is good.

(2) Angle of Yin and Yang vertical founder, conform to the requirements of the quality regulations. The allowable deviation of verticality and surface flatness of facade shall comply with relevant regulations.

3, the whole wall without empty drum, no cracks, no spots, uniform color.

Acceptance of external wall thermal insulation construction technology

1. The variety and technical performance of various materials entering the site shall meet the design and product quality requirements.

2. The structure of each layer of insulation system should comply with the design requirements and relevant technical regulations or atlas.

3, the protective layer without empty drum or cracking phenomenon.

4, grid cloth and thermal insulation layer contact closely, no warping phenomenon.