Nowadays, there are more and more materials for construction, and exterior plastering mortar is one of them. Especially for the construction of buildings, the practice of mortar floor is very important. Only with the correct approach, can he better guarantee the quality and have better effect. The plastering of the exterior wall is an important link in the construction project. The quality of the project can be visually reflected during the acceptance, so it is important to do a good job of plastering the exterior wall. At the same time, the construction process of plastering mortar on the exterior wall must also be known, so that it can be done correctly. Today, the decoration home decoration network Xiaobian will bring you to understand the construction technology and precautions of the plastering mortar on the outer wall for your reference.
Exterior wall plastering mortar construction technology
First, the technical specification of plastering mortar for exterior wall
1. The materials, specifications, quality and other elements of construction must meet the specified requirements. The construction layers must be firmly bonded. It is not possible to have delamination, empty drums, no ash and cracks in the surface layer.
2, the surface of the gray layer is required to be smooth and clean, the joint is smooth, the line angle is straight and clear, and the hair path is uniform.
3, the design of the holes, grooves, wire boxes and other parts, after plastering to do the correct size, shape, neat appearance, smooth texture, the paved pipe should be plastered behind.
4, the width of the grid, the width and depth of the reserved gap should be uniform and consistent, so that the horizontal and vertical, smooth and straight.
5. The water flow slope of the clean water line and the drip water tank is correct, the drip line is straight, the depth and width of the drip tank are less than 10mm, and they are neat and uniform.
Second, the external wall plastering mortar construction requirements
1. Base treatment: If it is a concrete base layer, add a layer of 1:1 porridge cement mortar to the surface, which is filled with 20% 107 glue for surface solidification, concrete and brick wall joints, steel layout Net, the general width is 300mm, the mesh size is 10mm×10mm, the floating ash and other impurities should be removed before the arrangement, and the steel mesh should be flat and tight.
2, straight, set of rules: according to the reference line that has been popped up on the wall, respectively, at the corner of the door window, 垛, wall, etc., vertical, set of plastering cake. The ash cake is filled with ribs, and the wall surface is filled with ribs to control the flatness of the wall surface.
3, the bottom layer of mortar: should be layered and covered with the filling of the ribs, and flattened with a large bar straight, wooden trowel to reduce hair, the first layer 12mm thick, 1:2.5 cement mortar.
4. Wipe the surface layer mortar: After the bottom layer mortar is wiped, the surface layer mortar can be wiped the next day, the surface layer mortar is 8mm thick 1:3 cement mortar; the cement is used for 3.8% purpose gold ace waterproof powder, 0.9kg Dura Fiber/m3 cement mortar, smoothed with the dividing strip, and scraped with the plaster layer and the dividing strip of the golf ball by the ruler or the small bar. It should be flattened horizontally and horizontally, and flattened with a wooden trowel.
5, drip line, trough: in the cornice, window sill, window sill, awning, balcony, pressing top and protruding lines on the protruding wall, etc. should be done on the slope, the following should be made of drip line (slot), flow and drip line ( The groove is not less than 40mm from the outer surface, and the drip line should ensure that it is super-directional.
6. Pipes that are buried through the waterproof layer of the outer wall. The pipe clamp is fixed in place before plastering, and it is forbidden to install after plastering.
7. Maintenance: The plaster layer of cement mortar should be cured under humid conditions.
External wall plastering mortar construction precautions
Pay attention to the impact of meteorology
(1) Impact of temperature: First of all, do not apply at temperatures below 5 °C and before and after rain. Secondly, the temperature difference between morning and evening and noon is too large, and the wall that is not warmed up until noon at night can not be constructed. Otherwise, it will cause poor adhesion, so it is necessary to pay full attention.
(2) Influence of wind: Construction should be stopped in windy weather, especially when it is low. Due to the wind, the temperature of the wall will drop lower than the temperature. In order to prevent the wind, the tarpaulin should be covered.
(3) Effects of rain: If the paint is raining when it is not completely dry, it will adversely affect the molding. Not only the weather conditions should be paid attention to during construction, but even after the construction, the weather should be noted. If it rains before construction, there is water left in the base surface to make the water content higher, so it is not allowed to be forced to work. Before the rain, cover the base surface to be constructed every day with a tarpaulin, so that continuous construction can be carried out. It is absolutely impossible to construct on the base surface where the water content exceeds the specified standard. If it is not constructed according to the operating procedures, the coating film may be peeled off.
(4) Influence of humidity: When the humidity is high, the drying speed will slow down, and ventilation should be paid attention to. When the humidity exceeds 30%, the construction should be stopped. Due to the meteorological conditions, the construction effect is not good and the situation is concentrated in the winter. Special attention should be paid to the meteorological conditions at that time.
2. Pay attention to the problems in the construction
(1) In the hot summer weather, two hours before the putty construction, the wall should be moistened with water. After each batch of putty is dried, it needs to be cleaned with water.
(2) Primers and topcoats should be mixed well before use. If you are stirring indoors or in a roof, you should put a plastic sheet or newspaper under the bucket to ensure the floor is clean. Before the material is activated, the container cover must be cleaned first to prevent debris from entering.
(3) The construction equipment should be cleaned to avoid impurities, and the equipment should be cleaned in time. Construction personnel should be equipped with protective masks when spraying.
(4) The distance between the scaffolding and the hanging basket should be appropriate, and the standard distance is 40-50cm. If it is too close, it will make the scaffolding continue to be uneven; on the contrary, if it is too far, the painting skills can not be implemented as expected.
(5) Protection work. Stick as much as possible to the protective material, and stick it tightly. If it is applied to a part that should not be painted, wipe it off immediately.
(6) Before the formal construction, be sure to test on other boards, and then confirm the coating effect before entering the official coating.
(7) Properly separate the interval between processes, otherwise the adhesion of the coating film will not be strong or peeling, bulging, and peeling.
(8) Before the process is handed over and unloaded or moved to the basket, the parts must be carefully inspected and repaired if necessary.
(9) The protection of the door and window openings should be done.
(10) Before the application of the coating, attention should be paid to the silicone sealant on the side of the window frame.
The above content is the construction process of the exterior plastering mortar brought to you by Xiaobian today and the precautions during construction. I hope to provide help to the friends who are under construction. For more information, please stay tuned to the home of the decoration. More and better exciting home improvement content and the latest relevant information are all in the decoration home network.
