In the beginning, the design of the inner bay window was not well thought out. The initial design only considered the waterproof at the intersection of the top of the bay window and the outer wall, neglecting the waterproof treatment at the interface between different materials. The decoration of the facade of the external wall is richer than before, and the lines are also increased. The coefficient of temperature expansion of various materials is not the same, and water-repellent considerations are not in place, so that it is easy to produce cracks at the interface, and the result is leaking. Now.
Two causes of water seepageThere are many reasons for the leakage of the building's floating windows, which involve many factors such as design, materials, construction, management, and objective reasons.
1. The outside of the outer window frame is not sealed around the outside of the window frame (only the low-grade glass rubber is used for caulking), causing rain to seep into the room from the outside of the window sill under the influence of wind.
2. The peripheral area of ​​the outer window and window frame and the wall joint have been empty due to not being sealed by the sealing material. The rainwater seeps into the room along the gap of the window frame, causing the inner wall decoration to peel off from the window frame and become moldy and black.
3, sliding window seals due to poor quality, premature deformation failure, which can not stop the infiltration of rain, leading to leakage.
Three construction details are missing The bay window reinforced concrete partition wall was not casted together with other exterior walls during construction. It was only after the completion of the outer wall that the concrete was poured and the side walls were concrete. Some individual units did not have outer wall cuts. The good pulping, popularly speaking, is that the construction details are not handled properly, and then some management flaws are added. This creates a gap between the concrete partition wall and the outer wall. Although the root cause is on the outside, the inner bay window meets the rainy day. It also leaked. 
The main reason for seepage window water leakage is the aging of aluminum alloy window sealing material, improper material selection, and unreasonable design or construction, resulting in excessive deformation of the lap seam, separation of the sealing material from the substrate, and adjacent wall surfaces of windows, tiles and The cement joint between the tiles is not dense, and there is an empty drum inside the magnet. When it rains, rainwater enters the wall through the cracks in the tile and penetrates the interior wall.
Repair method:
1. Excluding part of the sealing material that begins to crack due to aging, the sealed part will be cleaned, and the surface is required to be free from oil, dust and other impurities.
2, waterproof powder against a certain percentage of the waterproof sealant, adjust a super strong adhesive sealant, the glass and aluminum alloy joints filled with dense. Local places are repaired and densified with high-quality special glass structural adhesives to prevent cracking and sealing. It is required that the surface be smooth, smooth, smooth, free of nicks and holes.
3. All joints of glass and aluminum alloy window frames are made of structural adhesive, and all are reinforced and sealed on the original foundation to reinforce the compactness of the glass glue and retard the erosion of the glass glue due to the sun and rain. Material aging phenomenon.
1. The flashing panel of the window frame and the concrete body joint shall be tightly attached to the concrete body, and the screw caps of the fixing screws and the holes of the concrete screw holes shall be filled with the polyurethane sealing paste. The base layer also needs special treatment.
2. Install a water blocking plate on the inside of the window frame.
3, repair Bay window structure.
1) A drip tray structure is used at the top of the floating window, and the drainage gradient is 1/10 or more. Prevent flooding at the top of the window.
2) The standard of the waterproof layer shall be the waterproof layer of the coated film, and the prefabricated aluminum alloy drape shall be installed at the end of the waterproof layer. A 30-50mm cross caulk drip tray is set at the concrete connecting with the outer wall, and the end of the waterproof layer at the junction of the outer wall is sealed.
3) The width of the bay window should be over 100mm.
4) If the above 3 points repair method can not be achieved, should avoid the use of waterproof membrane coating, and choose the thin layer of waterproofing, etc., increase the drainage slope of the drainage pipe, and take anti-condensation treatment in the top layer. The rare occurrence of floating window seepage is due to the unreasonable design, and most of it is caused by the construction unit failing to follow the standard construction; if the manual and material inputs are insufficient in the same repair process, repeated repairs will be repeated.
Bay window decoration
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