The interior of the renovated house is glamorous, so the outside must be decent. External wall insulation board is a common exterior wall decoration material, which also brings us a more comfortable living environment. Have you ever heard of the technical regulations for exterior insulation engineering? Then, Xiaobian will take a look at the relevant contents of the relevant technical contents of the external thermal insulation engineering technical procedures .
First, the main content of this procedure
General
2. Terminology
3. Basic regulations
4. Performance requirements
5. Design and construction
6. External wall insulation system construction and technical requirements
7. Engineering acceptance
Second, the external wall insulation board construction method
1. Base wall treatment
The base surface of the structural wall of the new construction must be cleaned. There are no oil, floating dust, dirt and other contaminants or other materials that hinder the bonding on the surface of the external wall, and the flatness and verticality of the wall surface are checked.
Check with 2m ruler, the large deviation is not more than 5mm, the over-difference part should be cut or repaired with dry mortar. For the energy-saving renovation of old houses, the original outer wall surface layer which is not conducive to the sticking of polystyrene board should be thoroughly cleaned, and the defects should be repaired with cement mortar to strengthen the leveling before the external wall insulation construction can be carried out.
2. Measuring the payoff
a. According to the building facade design and external wall insulation technical requirements, the horizontal lines, vertical control lines, expansion joints and decorative lines of the outer doors and windows are popped on the wall;
b. Hang vertical reference steel lines at the large corners of the building's exterior walls (yin corners, male corners) and other necessary places; horizontal lines shall be hung at appropriate locations on each floor to control the vertical and flatness of the EPS polystyrene board.
3. Paste polystyrene board
a. EPS polystyrene board cutting: Try to use 1200*600mm or 900*600mm standard size polystyrene board. If a non-standard size polystyrene board is used, it should be cut with a heating wire cutter or a wallpaper knife. Diagonal error ± 2mm, processed according to the actual size required. The dimensional tolerance is ±2mm and the size is vertical.
b. Bonding mortar: use finished bonded mortar for exterior wall insulation construction. The prepared bonding mortar is used up within 45.
c. Pre-applied 250mm wide bottom mesh on the polystyrene board on both sides of the deformation stitch.
d. Bonding EPS polystyrene board method:
1) Hang the vertical line at the yin and yang corner of the outer wall, and level it with a water level meter. At least 2 walls per wall, make sure that it is the same size as the wall. When segmented paste is used, a horizontal line is played on the starting layer, and the vertical control line is measured by the theodolite at the large angle base layer, and a horizontal line is hung according to the vertical vertical line as the control line for sticking the polystyrene board.
2) The first layer of polystyrene board is glued to the outer wall, and the other layer of polystyrene board is coated with a circle of polymer mortar around the board surface, the width is 50mm and 10mm, the side is left 50mm*50mm wide vent hole, and the board core is arranged according to the plum blossom shape. Bonding point, spacing 200mm, diameter 100mm. When a non-standard size plate is used, the ratio of the application area of ​​the bonding paste to the area of ​​the polystyrene board is not less than 1/3.
3) Immediately after the bonding mortar is wiped, the plate should be erected and placed in place. The paste should be gently and evenly squeezed, and the vertical plate should be checked at any time with the support plate. The plate and the plate are tight, and the polymer mortar is not rubbed at the seam.
Adhesive polystyrene board should be staggered up and down. When each board is pasted, the extruded mortar should be removed in time. There is no gap between the boards. If there is gap, apply polystyrene board with corresponding width.
4) The polystyrene board adhered to the two adjacent walls at the anode and the corner should be vertically staggered to ensure the verticality of the board installation.
5) Mounting fixtures: Drill holes with impact drills on the affixed polystyrene board. The holes are not less than 30mm deep into the wall surface, and the number is 2-3 per square meter, but each monolithic polystyrene board In 2 pieces.
The base layer is a concrete member, and a nylon plastic expansion tube is used; the base layer is a ceramsite hollow block, and a special anchor is used.
4. Polystyrene board polishing
Polystyrene board joints should be smoothed with coarse sandpaper, and the grinding action should be a gentle circular motion. After smoothing, use a brush or compressed air to clean the debris.
5. Apply the surface glue
Use a stainless steel trowel to evenly apply a layer of plaster on the surface of the EPS polystyrene board that is slightly larger than a piece of mesh, and the thickness is about 2 mm.
Second, the external wall insulation board construction considerations
1. Materials should be classified and listed for storage. Polystyrene board should be bundled and placed to prevent rain and moisture. The mesh cloth should also be stored in rainproof. Bonding, plastering mortar storage should also pay attention to rain, moisture and shelf life.
2. The operating environment and the base temperature are not lower than 5 °C. Wind power is greater than 5 or rainy days cannot be constructed. If there is sudden rain during the construction of the external wall insulation, effective measures should be taken to prevent rain from scouring the wall.
3. The plate and the plate are tightly packed, and when the slit width exceeds 2 mm, the polystyrene sheet with the corresponding thickness is flattened.
4. After the external wall insulation construction is completed, the subsequent processes and other ongoing processes should pay attention to the protection of the finished products of the external wall insulation system.
5. Strictly abide by relevant safety operating procedures to achieve safe production and civilized construction.
How about, read the above-mentioned introduction to the technical regulations of the external wall insulation engineering, and also understand the relevant content of many technical regulations for exterior insulation engineering. I hope that you can learn more about home improvement knowledge through this article, and you will be able to create a more perfect home environment. Thank you for reading this article and your support and love for Xiaobian. If you want to get more information about home improvement, please continue to pay attention to the decoration home network.
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