Why do plastic windows in the house sweat?
PPlastic windows are an indispensable attribute of a comfortable life both in private country houses and in city apartments. They are installed everywhere, since such windows have a number of positive characteristics. So, they insulate noise and keep heat out. Besides, plastic windows ultra-durable, they are not afraid of the negative effects of the environment, for example, mechanical damage or ultraviolet rays. But they have one significant drawback: the accumulation of moisture on the glass. More than one owner of the house wondered: "Why do plastic windows sweat in the house?" Let's look at the causes of the problem and how to fix it.
Misted PVC windows
The content of the article
Video: what to do if plastic windows sweat?
What is the threat of high humidity in the room?
In the cool season, plastic windows are often covered with water droplets not only from the outside, but also from the inside. This phenomenon leads to increased humidity in the room. Few people think that this problem seriously affects the things of the room and the health of its residents:
- Mold and fungus grow on the walls and ceilings, which in turn gradually leads to a weakening of the strength of the bearing beams;
Fungus on the wall
- Wooden products are deformed or completely destroyed;
- Metal products are corrosive;
Corrosion of metal
- The person has trouble breathing;
- Over time, arrhythmia and high blood pressure may develop.
If windows in your house are sweating and you are not doing anything to eliminate this phenomenon, then you are simply underestimating the threat. To understand why plastic windows in the house sweat in winter, you need to immediately understand the causes of the problem.
Misting of plastic windows in the house: causes of the phenomenon
Experts identify several of the most common causes of window sweating:
- Insufficient air in the room. The air circulation is not strong enough to remove excess moisture from the room. This is often observed in winter, when all the cracks are tightly closed: the slightest draft will not enter the house. Excess moisture simply has nowhere to go, so it accumulates on the window panes;
- Low vapor permeability of walls. Modern finishing materials for house facades, as a rule, provide good soundproofing and thermal insulation, but they do not allow the wall to "breathe". Pre-priming of walls, non-woven, vinyl wallpapers - all these elements prevent correct ventilation in a private house or in an apartment. Moisture has no choice but to condense in the form of drops and streams on glass;
Non-woven wallpaper - the enemy of vapor permeability
- Unreliable plastic window construction. A classic double-glazed window has two, sometimes even three chambers. This structure provides strength and functionality, as well as sufficient vapor permeability. But unscrupulous window dealers trade in single-chamber products that guarantee windows fogging almost all year round, not counting a couple of summer months;
Types of plastic windows
- Incorrectly insulated slopes. Before the onset of cold weather, the cracks in the window opening must be sealed with cement mortar, and the outside must be insulated with high-quality mineral material: basalt tiles, foam plastic, glass wool.
Basalt slab is an excellent material for insulating plastic windows
Now that we know why plastic windows in a private house sweat, it will be much easier to eliminate this nuisance.
Related article:
How to regulate plastic windows yourself? In a separate publication you can find detailed instructions on adjusting windows in different situations.
What to do if PVC windows sweat?
Before proceeding directly to solving the problem, you should find out the humidity level and air temperature in the room. So, excess or lack of moisture is used by a special device - a hygrometer. On average, air humidity in ordinary residential apartments should range from 40 to 60%.
The air temperature also affects the sweating of plastic windows: the higher it is, the more the glass sweats in the cold season. This indicator is measured with a simple thermometer for an apartment. According to experts, the optimum air temperature is 18-21 degrees on average. Deviation to the smaller or larger side threatens with excessive formation of drops on the glass of plastic windows.
Thus, you should monitor the indicators of humidity and air temperature, and do not let go of deviations from the norm. If you know why the plastic window in the house is sweating, you should take measures to eliminate the cause:
- Replace windows with quality products with at least two cameras. You need to stick an energy-saving film on the glass;
Construction of a two-chamber plastic window
- Fill up the slopes on the inside and outside. So, all the cracks are covered with a cement solution, from the outside of the window they are finished with foam, and inside - with glass wool;
- Houseplants should be removed from windowsills where glass is sweating. They only increase excessive moisture formation in the room;
- Ventilate the room more often. At least 2-3 times a day for half an hour. If it is winter outside, leave the room during this time so as not to catch a cold from hypothermia.
Airing the room
As a rule, these measures are enough to stop sweating plastic windows in a private house or apartment.
conclusions
- Often the reason for the sweating of plastic windows is the incorrect design of the product. In this case, the problem is solved by replacing the windows;
- Sweating of windows causes increased humidity in the room, which in turn leads to health problems for the residents of the house;
- To eliminate the problem, timely ventilation of the room should be ensured and all cracks and cracks in the doorway should be repaired.
This video will give more information about why plastic windows in the house sweat:
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