What is the cause of water leakage in the wall against the balcony

The balcony is the most leaky place, because it is the place where the most water is used, such as showers, flushing toilets, ......Inevitably, over time, there will be some small cracks, so that the water from the upstairs can easily seep into the roof of the downstairs residence.

Water pipe leakage, water pipes hidden in the house, or solar water pipes will inevitably leak over time, resulting in different degrees of dampness on the wall.

Residents living on the top floor, especially some old houses, if it rains for a while, it is good to say, if it is the kind of continuous drizzle, it will be over, and there will definitely be water seepage in the corners of the house, and it should be very serious. It is still advisable to find someone to fix the roof.

Another reason is that it is not easy to detect, which may happen, if the bathroom is often damp, the outside wall connected to the bathroom will become moldy, which is also the cause of a water leak.

Waterproofing of the exterior walls is what the developer should do!! He's pushing the blame!

This question is very troublesome, it doesn't seem to have rained in the last few days of the National Day, will it be the reason, there has been light rain before, it is recommended that you consider this factor;

It may be caused by washing the balcony with water upstairs, because the balcony basically adopts the dry paving method when laying the surface bricks, so a layer of water storage layer is formed under the surface bricks, and every time the balcony flushes water, it will seep into the water storage layer below through the ground brick joints, and when the floor drain joint construction is not tight, the water in the water storage layer will slowly leak down through here. You can ask if the balcony is occasionally washed with water upstairs.

The walls of the balcony were not waterproofed during the decoration. In this way, rainwater from the outer walls seeps in.

If you want to solve it completely, you need to put a layer of waterproof paint on the inside of the balcony, and it is better to paste a layer of tiles.

Agree with the opinion of the upstairs to simply redo the waterproofing veneer bricks.

1. The reason for aluminum alloy windows.

The waterproof sealing level of aluminum alloy windows is not enough, and cracks will occur when the sealing rubber is aging and hardening. Seriously, there is no drainage channel in the cavity of the aluminum alloy window structure. Under the action of indoor and outdoor wind pressure difference, the rainwater entering the cavity of the aluminum alloy window structure is discharged in time without a drainage system, resulting in water pressure and leakage along the wall.

2. Reasons for window and wall construction.

The joint point between the aluminum alloy window and the wall is the part that is easy to leak, and there is no filling material as required, such as the waterproof cement mortar is not marked correctly, and there is a gap between the window frame and the wall when filling, especially the doors and windows with corners or connected forms, and there is no corresponding connecting rod for strict sealing, which will cause rainwater leakage.

3. Reasons for waterproof construction.

Open-air balconies have low waterproof requirements, and generally only simple waterproofing measures are taken. However, if you change the balcony to a closed room, if you put the washing machine on the balcony upstairs, and you have not taken the necessary waterproofing measures or only simple waterproofing measures, then it is easy to cause the balcony to leak.

How to do outdoor waterproofing well?

1. a structural roof.

The roof shall be impermeable concrete, and the impermeability grade shall not be lower than P6. Under the premise of satisfying the construction conditions, low slump concrete should be used as much as possible. The concrete of the roof must be poured and compacted to ensure the impermeability of the main body of the structure. The roof should be flattened and calendered when pouring concrete.

2. Closed water test and structural repair.

After completing the installation of pipes, flues, downspouts, etc. on various outlet surfaces and plugging around them, the structural water closure test is carried out and the leakage is repaired.

3. Leveling layer to find the slope layer.

The structure should be directly used to find the slope, and the slope should not be less than 1%. When it is difficult to find the slope of the structure, the slope finding layer can be used to find the slope. Fine stone concrete or cement mortar should be preferentially used for slope finding layer.

Be cautious with light aggregate concrete such as ceramsite and expanded perlite. All pipes, flues, walls, etc., which intersect with the roof, must be plastered with cement mortar to form a radius of not less than 50mm.

4. Polyurethane waterproof layer.

The waterproof layer is made of polyurethane waterproof coating film with a thickness of not less than 2mm. A waterproof additional layer must be added to the root of the wall on the surface of the board, the pipe, the flue, the downspout and other yin and yang corners. The material and practice of the waterproof additional layer are the same as the waterproof layer, and the waterproof additional layer should start from the yin and yang angles, and the upward and downward extension and horizontal extension are not less than 250mm.

1. Due to the insufficient waterproof sealing level of the aluminum alloy window, cracks will occur when the sealing rubber is aged and hardened. Or because there is no drainage channel in the cavity of the aluminum alloy window structure, the rainwater is not discharged in time with the drainage system, resulting in water pressure and leakage along the wall.

2. The joint between the aluminum alloy window and the wall is not reliable, and the material is not filled as required, such as the waterproof cement mortar is not marked correctly, and there is a gap between the window frame and the wall when filling, resulting in balcony leakage.

3. The waterproof work is not done well during the decoration. In the decoration did not pay attention to waterproofing, due to long-term sun and rain, the waterproof layer accelerated aging and cracking, and the balcony will cause leakage when it rains or when the washing machine mop pool is watered.

4. Leakage at the joints of the windows and window frames of the sealed balcony. The quality of the materials selected when sealing the balcony is relatively poor, and the balcony is exposed to wind and sun and human use all year round, and the gap between the window and the window frame causes water leakage.

5. Caused by pipeline damage. To install faucets, you need to reserve all kinds of jacks and bury pipelines before decoration. Circuit installation belongs to the concealed engineering, the construction needs to pay special attention, if the disorderly alteration, not in accordance with the correct construction steps, easy to bury potential safety hazards in the later stage.

6. The window drainage hole is blocked. The drainage holes of the windows are blocked by debris, which leads to the failure to drain the water in time during heavy rain, which leads to the leakage of the balcony. Therefore, when cleaning the house, you should check whether the drainage hole of the window is unblocked.