What should I do if there is water seepage and mold on the wall? Summary of popular solutions across the network in 10 days
Recently, many places in the South have suffered from continuous rainfall, and topics such as #WallMouse# and #HouseSeepage# have become hot searches, triggering widespread discussions. This article combines hotspot data and professional advice from the entire network in the past 10 days to provide structured solutions for owners.
1. Statistics of hot spots across the entire network (last 10 days)
| Platform | Related topics | amount of discussion | Hot search highest ranking |
|---|---|---|---|
| # Self-rescue guide for mold on walls after heavy rain# | 128,000 | TOP15 | |
| Douyin | "Evaluation of the wall mold removal tool" | 520 million views | Life list TOP3 |
| little red book | [5 secrets that waterproofing masters won’t tell you] | 34,000 collections | Home Hot Posts |
| Zhihu | "Does wall seepage affect the building structure?" | 860+answers | Topic Essence |
2. Analysis of causes of water seepage and mold
| Reason type | Proportion | Typical characteristics |
|---|---|---|
| Water leakage from cracks in exterior wall | 42% | Mildew spots are distributed radially |
| Leaking pipes | 28% | Mildew areas are concentrated and moist |
| Bathroom waterproofing failure | 18% | Mildew spots appear on the back surface |
| caused by condensation | 12% | Evenly distributed small black dots |
Three or five step solution
1. Emergency response (within 48 hours)
• Use a dry towel to absorb moisture from the surface
• Maintain indoor ventilation and turn on a dehumidifier
• Temporary use of anti-mildew spray (make sure to wear a mask)
2. Root cause investigation
• Check exterior walls for cracks
• Test bathroom waterproofing
• Contact the property management company to inspect utility pipes
3. Professional restoration solutions
| Question type | Fix | cost reference |
|---|---|---|
| Water seepage from exterior wall | High pressure grouting + waterproof coating | 80-150 yuan/㎡ |
| Leaking pipes | Replacing PVC pipes | 300-800 yuan/place |
| Waterproof layer failure | Repeat the waterproof + closed water test | 60-120 yuan/㎡ |
4. Wall repair process
① Remove mildew from the wall to the base
② Apply anti-mildew primer
③ Scratch water-resistant putty
④ Apply anti-mildew latex paint
5. Precautions
• Check exterior wall waterproofing before rainy season
• Keep indoor humidity <60%
• Monthly inspection of concealed pipes
4. TOP3 effective methods tested by netizens
| method | efficient | Things to note |
|---|---|---|
| Bleach + baking soda (1:1) | 89% | Rubber gloves required |
| Mold removal gel covers for 6 hours | 93% | Not for use on metal surfaces |
| UV mold removal lamp irradiation | 76% | Requires continuous use for 3 days |
5. Important reminder
• Deep mildew may release aflatoxin, professional testing is recommended
• Pregnant women and children should avoid construction areas
• Old houses over 20 years old need to be inspected for structural safety at the same time
If self-treatment fails, it is recommended to contact the local housing and construction department for registration, or find a construction team with waterproofing qualifications through a formal platform (query qualification number: construction enterprise qualification number XXXXX).
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