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1. A reasonable "back insertion method" is to complete large decorative layers on the exterior wall, such as bricks or paint, and door and window covers can only be completed with bottom plaster. After installing the door and window frames, the second decorative surface of the door and window covers can ensure that the edges of the doors and windows are pressed in by 5-10mm. Finally, use foam polyurethane and sealant around doors and windows to ensure the appearance of doors and windows and facilitate drainage. Maintain the installation of door and window frames and decorative layers. It is not only convenient for installing doors and windows, but also can adjust the thermal expansion and contraction of doors and windows. In fact, it forms expansion joints for doors and windows. The joints must be filled with closed cell foam shell or foam polyurethane to meet the needs of expansion, heat insulation and sound insulation. Seals or sealants should be used for waterproof sealing inside and outside doors and windows. However, the joint between the riser under the door and window frame and the floor or window sill should be weather resistant.

2. Due to the fact that the upper and lower sides of the door and window installation joints can meet the needs of expansion cycles in the X and Y directions, when using anti cracking mortar base, the lower joint can be pressed underneath. The frame is 10-20 millimeters and can be filled with joints. The joints between the waterproof mortar decorative layer and the door and window frames can also be used to form small circular or flat joints, create a water retaining platform, cut the water inlet, and seal the waterproof rubber to retain the platform after drying on the water surface.

3. Detail treatment of waterproof layer sealing for external wall insulation materials.

Rooftop terraces, protective walls, unsealed balconies, rain covers, air conditioning motherboards, etc. require insulation layers with waterproof sealing details. At any location, the waterproof material must be sealed at the end of the insulation material to protect it from the influence of the waterproof layer. In order to extend the waterproof film or coating onto the main wall and ensure the durability of the waterproof film, the edges of the net must be packaged and nailed firmly. This is a common practice aimed at preventing rainwater from flowing into the insulation layer along the wall and entering the channel of the waterproof layer.

4. Detailed treatment of top misalignment of external wall insulation materials.

Sometimes the waterproof layer on the balcony roof does not leak and the water seal test is acceptable. However, the roof of the room under the balcony is leaking, indicating that there is water in the insulation layer of the roof, which reduces the insulation effect. Therefore, before constructing the floor waterproof layer, the surrounding exterior wall insulation EPS board is about 400mm above the floor and about 100mm wide. The floor is stacked in the tank, and the waterproof film is attached to the main body of the upper wall. Edge banding. After the nail is completed, repair the insulation layer with rubber polystyrene particles, and then apply a surface layer.

5. Structural details treatment of the parapet wall with external wall insulation materials.

The inner corner of the parapet at the top of the roof gable is the enclosed detail of the roof waterproof layer. Although the lower corner of the cast-in-place roof slab has been drained with "eagle beak" and the waterproofing has been sealed, the EPS wall of the protective wall is still in an open-air insulation state and can still be partially watered under wind and rain pressure. The EPS board of the daughter's wall insulation layer should be pressed 100mm from the bottom of the roof. A flat layer should be applied. My daughter's wall should be covered with waterproof film and filled with polystyrene particle mortar.