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What to do if the walls are damp and moldy

2025-10-13 02:37:29 Real Estate

What should I do if the walls are damp and moldy? Summary of popular solutions across the network in 10 days

Recently, due to the continuous rainy weather, the problem of damp and moldy walls has become a hot topic on the Internet. According to statistics from major platforms within 10 days, the volume of relevant discussions increased by more than 200%. This article will organize the latest solutions on the Internet in a structured manner and provide practical mildew prevention guidelines.

1. Statistics of hot discussions on the entire network (last 10 days)

What to do if the walls are damp and moldy

platformAmount of related topicsHottest solutionAttention ranking
Tik Tok12,000 itemsComparative evaluation of mildew removal sprays1
little red book8600+ articlesRecommended anti-mildew paint for walls2
Zhihu430+ questions and answersHumidity Control Technology Analysis3
Station B210+ videosDIY mold removal practical tutorial4

2. Analysis of causes of mold on walls

According to the latest research from decoration expert @HomeDoctor:

Reason typeProportionTypical performance
Poor ventilation42%Concentrated mold in corners
Waterproof layer failure33%Traces of water seepage on the wall
Condensation water accumulation18%Mildew around window frames
other7%Caused by pipe leaks

3. Top 5 popular solutions

1.Emergency mold removal method(TikTok hot model)
Use 84 disinfectant (1:10 dilution) or special mildew remover, stay for 15 minutes and then scrub. Make sure to wear a mask and gloves.

2.Long-term anti-mildew solution(Xiaohongshu has the highest collection)
Construction steps:
① Eliminate mildew on the wall → ② Apply anti-mildew primer → ③ Use anti-mildew paint → ④ Keep it ventilated and dry

3.Equipment humidity control method(High praise on Zhihu)
It is recommended to use a dehumidifier + air conditioner in conjunction to keep the indoor humidity below 60%. According to actual measurements by netizens, the average daily power consumption is about 2-3 degrees.

4.Building Restoration Plan(Bilibili Tutorial)
For serious situations:
• Exterior wall waterproofing layer redone
• Injection of waterproof material into interior walls
• Install additional ventilation equipment

5.Natural mildew removal method(Hot search on environmental protection topics)
A mixture of white vinegar and baking soda, or a diluted spray of tea tree essential oil, is suitable for people with mild mildew and those who are sensitive to chemicals.

4. Product purchasing guide

product typePopular brandsprice rangeDurability of effect
Mildew sprayVelox/Dettol25-50 yuan1-3 months
Anti-mildew paintNippon Paint Anti-Mold 5-in-1300-500 yuan/barrel2-5 years
DehumidifierMidea/Gree800-2000 yuanEffective for a long time
hygrometerXiaomi/Deli30-100 yuanMonitoring tools

5. Special reminder from experts

1. Be sure to wear an N95 mask when dealing with moldy walls. Mold spores may cause respiratory diseases.
2. During the rainy season, it is recommended to open windows for ventilation twice a day, for no less than 30 minutes each time.
3. It is recommended to use anti-mold glass glue to treat the corners and gaps of newly renovated houses.
4. Continuous mold may be a structural problem of the building, and you need to contact a professional agency for testing.

6. Netizens’ actual testing experience

• @Decoration Novice: Apply waterproof coating after removing mold, and it has not recurred in 2 years
• @南 housewife: Moisture-proof pads on the wardrobe + hanging dehumidification bags are effective
• @renter: A small dehumidifier + regular spraying of alcohol is the most cost-effective

Through the above structured data and solutions, we hope to help you effectively solve the problem of moisture and mold on walls. It is recommended to choose the appropriate solution based on the actual situation. In serious cases, be sure to consult professional decorators.

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