What is the reason for the moisture on the heating wall in winter? What should I do if the heating wall is damp in winter?

We all know that the weather is cold in winter, and the temperature is relatively low. Heating is generally used in northern regions. After heating in some people's homes, the walls will become damp. This may be caused by a variety of reasons. So what should we do if the walls become damp during winter heating? Let's take a closer look!

Why is the wall damp during winter heating?

The air humidity, raining time and rainfall amount in the north are all lower than those in the south. The wall is less likely to get damp. The indoor dampness is serious during the heating period, which is also caused by the individual factors of the user's family.

For example, if the waterproof treatment of the outer wall surface and the outer surface of the roof is not good, it will be soaked and absorb moisture during the rainy and snow-melting seasons (periods), and in severe cases, it will cause the indoor surface paint to mold, change color, peel and delaminate.

If it is not caused by water infiltration of the exterior wall, it is also caused by the steam generated by cooking, boiling water, showering, washing hot water, or cooking, etc. The oil molecules generated will also be absorbed by the wall... or pollute the interior wall decoration, or cause mold. Over time, year after year, there will be cumulative pollution.

Solution:

A. When buying a house, you should choose an apartment with dry and wet separation. It is best to design the kitchen and bathroom on the south side of the apartment, and the east and west sides are second best. It is not advisable if they are surrounded in the middle. (The reason is: air has more opportunities to circulate from north to south, which is conducive to the natural flow of air, transforming turbid air and moisture, and keeping the indoor air fresh).

B. The kitchen and bathroom should all be installed with floor and wall tiles to facilitate cleaning. At the same time, use a high-function range hood and dehumidification device.

C. Choose materials that are moisture-proof, corrosion-resistant, stain-resistant and easy to clean for ceiling decoration.

D. When using a range hood, you should open the window appropriately and close the bathroom door to prevent foul air from seeping in from the toilet, floor drain, etc.

What to do if the wall surface of the heating system is damp in winter

1. Reasons

There are many reasons for indoor moisture regain, which can be mainly divided into three categories: exterior wall reasons; decoration reasons; and other reasons.

The reason for indoor moisture is the main construction. In cities with heating, it is the poor insulation of the exterior walls. The poor insulation of the exterior walls is also known as the cold penetration phenomenon. In winter, due to rain and snow, there is rain and snow on the roof or exterior walls. As time goes by, it slowly seeps into the wall. When heating is turned on in winter, the indoor temperature rises and the water vapor saturation is high. However, the wall is cold because the insulation is not done well. The water vapor will crystallize into water droplets on the wall. When the wall is damp, mold and hair will grow. This phenomenon is particularly prominent in the bedroom.

If it is in a southern city, the external reason is that the exterior wall waterproofing is not done well. During the rainy season in the south, the air humidity is high and the windows cannot be opened for ventilation in time. If there is a problem with the exterior wall waterproofing, then the wall will become moldy and hairy in the humid season.

2. Solution

In cities with heating, there is only one way to completely solve this problem, which is to re-insulate the exterior walls. If the property management of the community is powerful, then after communicating with the property management, they will arrange for professionals to protect the exterior walls. If it is an old community or a community where the property management is not responsible, then you have to pay for the exterior wall insulation yourself. This is the only real and complete solution.

It is worth noting that exterior wall insulation should be done in summer and autumn. It is impossible to carry out exterior wall insulation in spring and winter when the temperature is low. After the exterior wall insulation is completed, the moldy and hairy parts of the indoor wall should be removed, and then waterproof putty powder and waterproof latex paint should be used to restore them to their original state.

Tips for dealing with humidity in daily life

In cities with heating, when mold and hair growth appear indoors, you can use some tips to effectively control the expansion of the phenomenon, which will make the walls look better.

1. Ventilate and air the clothes more often. Although it is very cold outside and warm inside during winter heating, it does not mean that ventilation is unnecessary. You can open windows for ventilation appropriately, which will greatly alleviate the moisture on the wall.

2. Air dehumidifier. In the heating season, a humidifier is normally used to increase the indoor humidity. To prevent the wall from getting cold, an air dehumidifier should be used. Placed on the cold wall, it can effectively alleviate the mold and hair growth on the wall.

3. Lime can prevent moisture and dehumidify. As we all know, quicklime can prevent moisture. If there is moisture in the bedroom at home, you can use quicklime bags to absorb moisture, which can play a role.