External wall thermal insulation has many functions such as thermal insulation, waterproof and decoration. In line with the needs of building energy conservation, it has been widely used. So what are the construction schemes for external wall insulation? What are its structural requirements? Next, I will give you a brief introduction to the external wall insulation construction scheme and the detailed description of its construction requirements.

I. Detailed explanation of construction scheme for external wall insulation

1, primary treatment

We need to clean up the floating ash and oil on the concrete wall, repair the empty drums and holes on the wall, and level the wall, and the flatness deviation should not exceed 4 mm

2, metope measurement, elastic line, hanging line

Next, we need to measure the wall and make records. We need to hang a vertical datum line at the big corner of the external wall and a horizontal line at an appropriate position on each floor.

3. Paste the flip grid cloth

We need to turn over the grid cloth on the exposed surface of the pasted polystyrene board. Usually, a part of the grid cloth is pasted on the wall with special mortar.

4, paste polystyrene board

When splicing polystyrene boards, flat-fell seams cannot be left at the four corners of doors and windows. When pasting, you can use the point-and-frame gluing method, typesetting in horizontal order, staggered pasting, and timely cleaning up the mortar overflowing from the edge of the board. When pasting polystyrene board, the flat-fell seam height difference should be less than 65438 0.5 mm.

5. Fixation of anchor

We can use mechanical anchors to fix the polystyrene board,

When fixing, please note that it takes 24 hours to start in bonding mortar. Usually we need to punch holes on the surface of polystyrene board according to the design requirements, and then knock in the anchor nails. Its nail head and nail plate should not exceed the surface of polystyrene board. 6. Treatment of uneven joint surface of polystyrene board

If the surface of the joint of polystyrene board is uneven, you can choose to gently polish it with coarse sandpaper lined with wood squares along the circumferential direction, and then clean up the impurities on the surface with a brush.

7, wipe the bottom plastering mortar

After the acceptance of polystyrene board and anchor construction, the bottom plastering mortar can be applied. At the same time of this project, we need to press the revolving grid cloth into the mortar. Grid cloth should be flattened and compacted, but not too deep. Finally, before the bottom mortar condenses, the plastering mortar should be wiped again.

Second, the external wall insulation construction requirements

1, the construction temperature of external wall insulation should be kept between 5 and 35 degrees, and the outdoor wind force should not exceed 5 degrees. The construction wall can not be exposed to the sun for a long time, nor can it be constructed in rainy days.

2, do a good job of safety during the construction, the erection of tools to meet the construction requirements, the construction site to be roads, water, electricity.

Let me sum up: I briefly introduce the construction scheme of external wall insulation and the detailed description of its construction requirements here. I hope that after reading this article, I can provide you with reference and help.