Is mold on bedroom walls harmful to the human body?

Wall mold is also called wall mildew, wall hair, wall cancer, etc. There are many reasons for this, such as weather, or the wall is too humid or the material quality is unreliable. etc. Living in a room with moldy walls for a long time is likely to cause fungal infection of the lungs, cough, sputum, fever and other symptoms.

1. How to deal with mold on the wall

1. When mold spots appear on the wall, you can first use a (dry) toothbrush to brush away the mold stains, and then use a soft cloth dipped in alcohol. Rub gently to dry the walls and prevent mold growth.

2. Add bleach (powder) to water at a ratio of 1:99 and pour it into a spray bottle. Spray it on the moldy wall to immediately solve the moldy problem on the wall. Wipe the wall with a rag; then wash it with clean water. After the wall is dry, apply anti-mildew paint to prevent moisture for a long time. In addition, there is a convenient household waterproofing repair agent on the market. You only need to spray it on the cracks in the leaking wall and floor like an insecticide. It is very convenient to operate.

3. When the mold is not too serious, it is enough to use 80% alcohol to wash the walls. Pay attention to ventilation when cleaning, and wear protective gloves, masks and glasses. To avoid the recurrence of mold, attention should be paid to thorough drying of the walls, elimination of the causes of mold, and proper heating and ventilation.

4. During humid weather, open windows as little as possible. In addition, try to keep the walls as dry as possible. In humid weather, you can use dehumidifiers, air conditioners, and fans to absorb moisture from the walls. Once moisture appears on the walls or furniture, it should be wiped off immediately with a dry cloth.

2. How to remove stubborn mildew on the wall

1. First, polish it with sandpaper. If there is delamination, use a shovel to smooth it;

2. Then, if the wall surface is uneven, it needs to be repaired with putty;

3. Finally, if the wall surface is flat, it is recommended to apply sealing primer first, and then apply latex paint.

3. Reasons for moldy walls

1. The first reason: water supply and drainage pipes or heating pipes leak, causing the wall to get damp. Over time, the wall will become damp. It will get moldy.

2. The second reason: external rainwater seeps into the room, causing the wall to be damp. Cracks appear at the junction between the baffle under the balcony window (mostly made of prefabricated floor slabs, so cracks are prone to occur at the junction with the wall) and the wall, or the window sealing performance is not good, which may cause external rainwater to seep into the room.

3. The third situation: The wall insulation is not done well, resulting in a large temperature difference between indoor and outdoor. In this way, the water in the indoor air will condense on the wall when it gets cold, causing the wall to be damp.