Nowadays, people have been widely used in building exterior wall insulation technology, because many buildings are actively selected to achieve energy-saving indicators, but there are still many people who do not know much about external wall insulation, and then let the decoration The home decoration network Xiaobian to introduce you to the external wall insulation construction plan and the precautions for the construction of the external wall insulation, I hope it will help everyone.
I. Introduction of the internal wall insulation construction plan
1. Grassroots cleaning. Clean up the floating ash, mold release oil and other debris and plastering hollow parts on the concrete wall surface, and repair them. The various holes in the outer wall are packed tightly. It is required that the surface flatness deviation of the bonded polystyrene board does not exceed 4 mm. When the deviation exceeds the deviation, the protruding wall surface is polished, and the concave portion is used for repair.
2. Wall measurement, elastic wire, hanging wire. According to the building façade design and external thermal insulation technical requirements, the horizontal and vertical control lines, telescopic lines and decorative stitches of the external doors and windows are popped on the wall. Vertical lines are placed at the corners of the building's exterior walls and other necessary places, and horizontal lines are placed at appropriate positions on each floor to control the verticality and flatness of the polystyrene board.
3. Paste the overturned mesh. All the exposed side of the pasted polystyrene board should be covered with a mesh cloth. The 80mm width of the mesh cloth not less than 200mm wide is firmly adhered to the base surface with a special bonding mortar, and the remaining mesh cloth is overwrapped when the polystyrene board is attached later.
4. Attach the polystyrene board. The standard size of polystyrene board for external thermal insulation is 600mm×900mm, 600mm×1200mm. Non-standard size or partial irregularity can be used to cut polystyrene board with minimum size over 300mm at the corner of the whole wall. The seams of the benzene board cannot be left at the four corners of the door window. Since the surface flatness of the base wall is not good enough, the point frame bonding method should be adopted. When the finish is a coating method, the bonding area is not less than 40%. Do not apply bonding mortar to the sides of the board. When arranging the plates, they are arranged in a horizontal order, and the upper and lower slats are pasted, and the yin and yang corners should be treated with wrong sputum Even if the bonding mortar overflowing from the edge of the board is clear when the board is stuck, there is no "collage gray" between the board and the board. The seam of the board should be tightly packed. When the seam width exceeds 2 mm, the polystyrene sheet of the corresponding thickness is used for filling. The height difference of the seam is not more than 1.5mm, otherwise it should be sanded or sanded with special sanding equipment.
5. The anchor is fixed. When fixing the polystyrene board with mechanical anchors, the anchor installation should be carried out at least 24 hours after the bonding mortar is used. The electric hammer is used to punch holes in the surface of the polystyrene board. The aperture is determined according to the diameter of the anchor. The depth of the wall should not be less than Design requirements. Screw in or knock in the anchoring nails so that the nail head and disc do not extend beyond the deck.
Second, the external wall insulation construction considerations
1. Check the drawings and the site. During the construction of the structure, the original structural drawings may be modified according to the owner and actual needs, so the parts that need to be insulated should be adjusted accordingly. Under normal circumstances, the insulation part is difficult to display on the drawing. If it is only carried out according to the figure, it may cause cold bridge defects. Because of the professional insulation project, there is the location of the cold bridge. After discovering the problem, you should inform the relevant departments of the problems and solve the problem. Generally speaking, external thermal insulation is still an emerging technology, and problems on the drawings will inevitably appear. Therefore, we must carefully read the drawings and propose measures that need improvement in a good-hearted way. This is also a little effort for energy conservation.
2. Workforce planning. After the project management personnel go to the site to understand the situation, they can generally find out in time whether the door and window installation is completed, whether the maintenance structure is completed, and the progress of the curtain wall construction. In order to effectively formulate the workforce plan, the optimization of personnel arrangements plays a role. In addition, the work will not only cause economic losses, but also cause potential safety hazards on the construction site itself.
The above series introduces some of the contents of the external wall insulation construction plan and construction precautions. I hope that the introduction of Xiaobian can make everyone's understanding of the insulation inside the wall a step further. If you want to know more home decoration. Information, please continue to pay attention to, decoration home network.
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