The rainy season is coming, don’t rush to find a repairman if your walls are leaking
Every year during the rainy season in May and June, many residents in Taipei and New Taipei will encounter problems with wall seepage, ceiling dripping, or wall cancer expansion. In fact, most water leakage problems can be initially diagnosed through simple observation to avoid unnecessary repair expenses. This article compiles practical self-examination methods and cost references, allowing you to take the initiative.
5-step self-diagnosis, quickly locate the source of water leakage
🔍 Step 1: Record the time of water leakage and its correlation with weather
Observe whether water leakage only occurs after heavy rain? If it is highly related to rainfall, it may be caused by cracks in the exterior wall or poor window frame sealing; if the continued water seepage has nothing to do with the weather, you need to suspect internal pipeline problems.
🔍 Step 2: Check common water seepage points
• Is the silicone around the window frame aging and peeling?
• Are there any signs of water seepage around the bathroom wall joints and floor drains?
• Is there water damage spreading in the corners of the ceiling or around light fixtures?
🔍 Step 3: Take photos, record and mark the location
Use your mobile phone to take photos of the leaking area, water damage range and surrounding environment to facilitate subsequent communication with the master and also serve as a basis for comparison before and after the repair.
🔍 Step 4: Simple Test and Troubleshooting Method
If you suspect that the bathroom is leaking, you can temporarily stop the water source in the area for 24 hours to observe whether the water seepage has slowed down; if you suspect that the external wall is seeping, you can check whether there are obvious cracks or moss attached to the external wall on a sunny day.
🔍 Step 5: Determine whether professional instrument testing is required
If the source cannot be confirmed through self-examination, or the leakage range expands and there are signs of structural damage, it is recommended to entrust a professional master to use a thermal imager or humidity detector to accurately detect leaks.
Illustrations of 3 common causes of water leakage and corresponding construction methods
💧 External wall water seepage type: Mostly due to cracks in the wall, aging of the waterproof layer or failure of the window frame seal, it is suitable to use high-pressure infusion "injection" or exterior wall waterproof coating treatment. The cost is about 300 to 1,000 yuan per injection, or 300 to 500 yuan per square meter of waterproofing.
💧 Pipeline rupture type: The joints of hot and cold water pipes or drainage pipes are loose and the pipe walls are corroded. Partial walling is required to replace the pipes. The cost is about 8,000 to 25,000 yuan, depending on the difficulty of construction.
💧 Bathroom waterproofing failure type: The joints of floor tiles, the toilet base or the waterproof layer under the sink are damaged. Partial waterproofing may need to be done, and the cost is about 2,500 to 5,000 yuan/square meter (wall cancer treatment).
Reference for the reasonable quotation range of Shuangbei leak catching masters
• Basic inspection fee: 800~2,000 yuan (some operators can offset the construction fee)
• High-pressure infusion injection: 300~1,000 yuan/injection, suitable for small area leakage
• Professional equipment for leak detection: 8,000~20,000 yuan/time, suitable for hidden pipelines or complex water seepage
• Rework of waterproof layer: silicic acid waterproofing costs 300-500 yuan/square meter, including materials and basic construction
Reminder: The quotation should include materials, labor and basic warranty. Be sure to confirm the written details before construction to avoid subsequent disputes.
Prevention is better than cure: suggestions for seasonal maintenance of waterproofing in old houses
• Before the rainy season, check window frame silicone and exterior wall cracks, and repair minor problems in a timely manner
• Regularly reinforce joints of bathroom floor tiles to prevent moisture from penetrating into the structural layer
• Keep drainage holes on balconies and roofs unobstructed to prevent water from pouring back
• Maintain indoor ventilation and dehumidification to reduce the risk of wall cancer
Master self-examination skills and reasonable cost awareness, so that you can calmly deal with water leakage problems. If you need professional assistance, it is recommended to choose a local service provider that provides test reports and warranty commitments to ensure the quality of repairs and subsequent rights.
New knowledge on air-conditioning power consumption and Taiwan climate maintenance regulations in recent years (2025-2026 current situation)
With the high temperatures in summer breaking historical records and the adjustment of electricity price structure in recent years, the latest statistics from the Energy Administration of the Ministry of Economic Affairs show that air-conditioning equipment accounts for more than 47% of residential electricity consumption in summer. Many people mistakenly believe that if the air conditioner is not cold, they only need to "replenish the refrigerant." However, in fact, refrigerant is not naturally consumed during normal operation in a closed circuit. If the refrigerant is insufficient, it means that there are micro leaks in the copper pipes or joints. Simply replenishing the air conditioner will only treat the symptoms but not the root cause. Refrigerant leakage will aggravate the high temperature overload of the compressor and shorten its service life.
According to Taiwan's standard operating specifications for air-conditioning projects, it is recommended that professional technicians with a refrigeration and air-conditioning decoration technician license perform "full machine high-pressure water washing and evaporator deep sterilization" every 1 to 2 years for detached air-conditioning indoor units. Especially in the humid summer in the Shuangbei Basin, the air drum and water collection tray are easy to breed black mold and jelly-like biofilm. This is also the main reason for the sour smell in the air-conditioning outlet and the backflow of the drainage pipe. Regular maintenance can maintain CSPF (Air Conditioning Seasonal Performance Factor) level one energy efficiency level, which can save an average household 15% to 20% of air conditioning electricity bills every year.
Autonomous simple maintenance vs professional maintenance safety red line
- Homeowners can do by themselves: Remove and clean the nylon filter regularly every 2 to 3 weeks (rinse with clean water and dry in a cool place, do not expose it to the sun to avoid deformation and embrittlement); clean the air outlet blades of the indoor unit with a dry cloth; check whether there is any accumulation of debris within 50 cm around the outdoor unit that hinders heat dissipation.
- Professional technicians must be entrusted according to regulations: Refrigerant pressure testing and leakage repair welding, high-pressure cleaning of indoor unit air drums and aluminum fins with liquid chemicals, reset of the drainage slope of hidden cold water pipes in the ceiling, and 220V dedicated power circuit configuration and leakage circuit breaker replacement.
