Why do plastic windows sweat

Plastic windows, no doubt, have many advantages. Among them, insulation, aesthetic appeal and thermal insulation. But something that most glazed windows owners are worried about: why are plastic windows sweating? This helps to increase the humidity in the house or apartment. And this, as a result, leads to the spread of fungi and mold, negatively affecting human health.

You may have noticed that windows do not always sweat. This phenomenon is observed in the morning and in winter. And sometimes you may find that the window is sweating only in one room, while in the rest of the rooms the glass units are dry. Or another option: the glass - dry, and on the windowsill - a puddle. What is the cause of such a common problem? In this article we will try to deal with this issue.

Condensation. How to be?

Surely you remember from school physics lessons that there is the concept of condensate. This phenomenon is the transition of water from a gaseous state to a liquid. The main reason for this phenomenon is high humidity in the room and a large temperature difference outside and inside the house. However, if your windows do not always sweat partially, the reason may lie elsewhere.

Sometimes a person can create favorable conditions for the formation of condensate, without realizing it. The fact is that plastic windows sweat from the inside, if there are many colors on the windowsill. This is due to the fact that plants breathe and emit moisture, which subsequently settles on the windows. If the cause of condensation in this, then to eliminate the problem, you just need to remove the flowers from the window sill.

The appearance of streams on the windows can be triggered by poorly functioning ventilation. To fix the problem, you will need to clean the grill of dirt or replace it, and also check the ventilation shaft if it is clogged.

In winter, plastic windows can sweat due to the wide windowsill covering the battery. Due to the fact that the glass is supercooled, it will form condensate. It is important to ensure good air circulation. You can put the heater closer to the window or replace the window sill with a narrower one.

Another provoking factor is insufficient airing. High sealing plastic windows can cause condensation on the glass. What to do? Ventilate the room several times a day for 3 minutes, then the problem will be solved by itself.

Industrial defect or unjustified frugality

Did you take into account all the above points, and your windows continue to sweat? Then, most likely, you have fallen victim to your own frugality, because on single-chamber double-glazed windows condensate appears in all cases without exception. Here, the solution is unambiguous - you need to replace the glass.

Note! Replacing a single-chamber double-glazed window with a two-chamber one without replacing the frame is possible only if windows with an expanded single-chamber double-glazed window were first installed. 

To cool the glass leads to poor installation of windows, incorrect execution of external and internal slopes. This problem is solved by the restoration of slopes. External need to be insulated with foam, and internal - to isolate the cement. To insulate internal slopes, use a basalt slab or glass wool.

Another unpleasant reason for the formation of stains on the glass - manufacturing defects. This window will have to be completely replaced. Of course, this event will require additional financial investments.

Note! Only in 5% of cases the cause of condensation on the windows are installers and manufacturers. Given this fact, before you charge a third party, eliminate your own mistakes and omissions.

The importance of airing

To prevent heat loss, you should insulate the walls on the inside of the apartment or house, although external insulation is more effective. To resort to internal warming should be only in extreme cases.

New materials for heating better conduct heat, so if you have old batteries and pipes, plan to replace them soon. In some cases, installing an additional radiator helps. If your financial situation allows, then set the system "warm floor". This is the perfect solution for home heating.

If we talk about ventilation, then make sure that the ventilation grilles in the bathroom are in proper condition and that the kitchen hood is working. Old houses with dimensional attics are equipped with ventilation ducts, which are often clogged with foliage and poplar down. You can clean them yourself or by resorting to the help of an organization serving the house.

In the bathroom and in the kitchen, you can make forced ventilation by installing a fan in the grille. The premises should be regularly ventilated, because the plastic windows do not provide for natural air circulation.

Note! If you have a double-glazed window with a summer-winter mode, then do not forget to change it in accordance with the season. The fact is that the window in summer mode does not ensure proper clamping of the sash to the profile. As a result, condensate will accumulate on the windows in winter, turning into frost due to drafts.

Now you know all the possible causes of condensation and methods for eliminating them. This article will help you determine the cause of the appearance of stains on the glass and the method of its elimination.

Video

If you do not know how to change the degree of clamping plastic window casement, see the following video: