Water proofing of decorated house walls should not

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As an important part of the decoration and waterproof engineering, wall waterproofing treatment must attract everyone's attention. Improper waterproof treatment of the wall will cause damp, mildew and leakage of the wall, which will greatly reduce the overall waterproof effect

waterproofing can be divided into two forms, one is pro surface waterproofing, and the other is back surface waterproofing. In terms of the cost and effect of waterproofing, pro surface waterproofing is better than facing surface waterproofing. Today, Xiaobian brings you knowledge about wall waterproofing

wall waterproofing practice

1. Base surface treatment is the foundation

base surface treatment is the key to waterproof construction. Before construction, the base surface must be cleaned to ensure that it is solid, flat, clean, free of dust, grease, wax, release agent and other debris. If there are defects such as pores and cracks, it must be repaired and troweled with cement mortar in advance, and the internal and external corners should be plastered into a circular arc. Keep the base surface moist when there is no open water

2. Pay attention to the brushing method

the brushing force should be uniform, and pay attention not to miss brushing; Maintain the vertical intersection angle when painting the front and back two times to fully cover in place; The single painting should not be too thick, especially at the nozzle and corner, which should not exceed 1mm, so as to prevent cracks after drying

3. Maintenance and protection are also important

it is recommended to cover the coating with wet cloth or spray water with spray 24 hours after construction. It is forbidden to step on, rain, expose to the sun and sharp damage before it is completely dry, especially when installing sanitary ware in the later stage, pay special attention not to damage the waterproof layer

4. Check carefully to prevent future problems

be careful when painting, and check carefully after painting, especially at joints, internal and external corners, pipe orifices and other parts; After the construction is completed, the closed water test shall be carried out for 48 hours, and the closed water height shall be increased as much as possible, no less than 20cm. Carefully check whether there are signs of water seepage or drops of water on the ceiling downstairs. The light wall must be subjected to a drenching test, and the back wall must be checked

key points for waterproof construction

1. On the premise of meeting the thickness requirements, the more times the waterproof coating is painted, the better the compactness of the film is. Therefore, it should be painted many times when painting. Neither thick waterproof coating nor thin waterproof coating should be painted at one time

2. The painting shall be uniform every time, and there shall be no exposure, omission and accumulation. When brushing for many times, the waterproof coating can be applied after the first coating is dry and forms a film

3. When the roof slope is less than 15%, the matrix reinforcement shall be laid parallel or perpendicular to the ridge, depending on the convenience of construction. When the roof slope is greater than 15%, in order to prevent the matrix reinforcement from sliding, it should be laid perpendicular to the ridge. When laying parallel to the ridge, it must be laid upward from the lowest elevation, and the matrix reinforcement material shall be overlapped along the direction of running water to avoid choking water. When the matrix reinforcement material is paved, it should be painted and paved at the same time to avoid the separation of the two

4. In order to ensure the integrity of the coating waterproof layer, the lap width of the long side of the carcass should not be less than 50mm, and the lap width of the short side should not be less than 70mm. It is not necessary to meet the requirements of the lap width of the waterproof roll

5. When using two layers of matrix reinforcement materials, the upper and lower layers shall not be laid vertically, so that the two layers of matrix materials have consistent extensibility in the same direction; The lap joints of the upper and lower layers shall be staggered, not less than one-third of the width, to avoid double joints of the matrix reinforcement materials of the upper and lower layers and uneven thickness of the waterproof layer

the above is the introduction that Xiaobian brings to you. If you want to know more relevant knowledge, please continue to pay attention to the consultation. Please look forward to more wonderful consultation




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