Yes, what are the requirements for the construction of external wall insulation board?

External wall insulation construction requirements are as follows:

1. 1 The wall at the grass-roots level shall be solid and flat, and the wall surface shall be clean. Dust, oil stain, mold release agent, paint, hollowing and weathered materials that affect the bonding strength should be removed.

1.2 check the flatness of the wall with a 2-meter guide rule. When the maximum deviation is greater than 4mm, use 1:3 cement mortar for leveling.

1.3 If the foundation wall does not meet the bonding conditions, it can be directly fixed with fixing pieces, and the number of fixing pieces should be determined according to the building height and the wall properties.

Play lines

Play the aproll horizontal line according to the drawing, and pop up the expansion joint width line on the wall of the design expansion joint. Play a vertical line at the corner of Yin and Yang, and pop up a vertical line on two walls to check the verticality of insulation board construction.

3. Preparing polymer mucilage

Pour 5.5kg of clean water into a clean plastic bucket, add 25kg of polymer mucilage, stir with a low-speed stirrer to form mucilage with moderate consistency, and let it stand for 5 minutes. Stir again before use. The prepared mucilage should be used up within 2 hours.

4. Laying turnover network

The width of the cut folding mesh cloth is the sum of the thickness of the insulation board of 200mm. First of all, around all the doors, windows and holes of the foundation wall and the system terminal, apply viscous polymer mucilage with a width of 100 mm and a thickness of 2 mm ... Store the cut mesh cloth with a side length of 100mm in cement, and no mesh is allowed to be exposed. Scrape off the excess polymer cement at the edge and keep the thrown mesh clean.

5. Laying insulation board

If the insulation board is an extruded board, it should be coated with a special interface agent on the side coated with adhesive paste and dried for 20 minutes before use. 5.2 In general, the insulation board should be laid horizontally from bottom to top. The staggered joint width is 1/2 plate length, and it should be cut appropriately when necessary, and the dimensional deviation is not greater than1.5 mm. ..

5.3 Spread a layer of viscous polymer mucilage evenly around the insulation board, with a width of 50mm and a thickness of 10mm, and leave a vent hole with a width of 50mm on one side of the board. The middle part is spot welded, with a diameter of 100mm, a thickness of 10mm and a center distance of 200 mm. For 1200 mm× 60. The side of the board should not be coated with glue.

5.4 When the wall surface at the grass-roots level is smooth, the pasting method can also be adopted, with the pasting width of 10mm and the spacing of 50 mm. ..

5.5 Immediately paste the insulation board coated with mucilage on the wall, slide it in place, and flatten it with hard rice by feet to ensure its smoothness and firm paste. 5.6 The gap between plates shall not be greater than 2mm, and the height difference between plates shall not be greater than1.5mm. When the gap between plates is greater than 2mm, the joints shall be filled with heat insulation strips, the slats shall not be bonded, and the joints shall not be directly filled with adhesive. Where there is height difference between plates, it should be polished and leveled.

5.7 Flat-fell seam is not allowed at the corner of all doors, windows and holes. It must be cut and shaped with a whole piece of insulation board, and the gap between boards is not less than 200mm away from the corner.

5.8 At all corners of the Yin-Yang angle, the method of staggered joints and pasting must be adopted, and the deviation should be controlled by the guiding rule according to the vertical line, and the deviation should be checked by the 90 guiding rule. 6 Install the fixing parts

The thermal insulation structure of buildings below 7 meters does not need to be fixed with fixing pieces. After the insulation board is attached, the fixing pieces can be installed after 24 hours. In the middle of the joints around each insulation board and board, drill holes with electric hammer, the drilling depth is about 50mm in the base, and the depth of fasteners is 45mm in the base.