Why does the front door sweat - causes, elimination of the problem + Video

Why does the front door sweat - causes, elimination of the problem + Video The entrance metal door is sweating - how to fix the situation. Only residents of an apartment building, as well as people who have a good door leaf installed, have never faced such a problem as fogging up the front door. Did you think it was that simple? There are many factors that should be taken into account to eliminate the problem, a lot, so you will have to look for the source of condensate carefully, conduct an inspection, analyze the installed structure in all parameters.

This is how you can understand why the front door in a private house sweats, and how to deal with it.

Why does the door leaf sweat, what is the danger

Condensation that forms on the metal front door (and not only on it) can form due to the fact that the temperature surfaces differ from each other.

A similar phenomenon can be observed on aluminum cans or on car windows during winter.

Why does the front door sweat - causes, elimination of the problem + Video When the air in the room is relatively warm, but the surface is much colder, then at a certain temperature reading humidity and air, it will reach the dew point temperature, that is, the steam in the air begins to move from one state of aggregation to another and collects on the same surface, but now in the form of water (condensate).

For example, if the air temperature in the dressing room is +21 and humidity is about 50%, then the dew point for the surface of the deri will be 10.2 degrees. If you take into account the high thermal, and specifically in this case, the cold conductivity of the metal, then at a low temperature outside the door in a private house will be constantly covered with condensation.

Dew, and in some cases even frost, which is located on the inside of the front door, will not add coziness to the atmosphere, but the most unpleasant thing will be that the iron doors begin to fog up both inside and out, and this can lead to the fact that the structure will quickly fail.

When buying an entrance door, everyone wants to get high quality construction at a nice price, but you want to save money and buy a system that does not have internal anti-corrosion treatment for a country house, then get ready to your door will not last long (unless you solve the fogging problem before the leaf starts to rust).

Good advice! The main thing is to figure out why the door is sweating, and also to find the weak side of the box, room or canvas that borders on it.

How to determine the cause of fogging and how to deal with it

If you look at the whole situation, then most often the reason is the same - the temperature difference, about which we said earlier. But still, it can appear for various reasons.

  • Why does the front door sweat - causes, elimination of the problem + Video The canvas was poorly insulated. Most often, the front door sweats precisely because it is poorly insulated.If you decide to buy a canvas that does not have high-quality insulation, then there are a couple of ways to solve the problem - either try to insulate the canvas yourself, or simply change it. The cavities in the canvas can be filled with polyurethane foam, but it is still better to think about how to make a high-quality interlayer inside the door space before you make a purchase.
  • Poorly insulated box.

    In this case, condensation may appear not only on the box itself, but even on the canvas around the perimeter of contact with it. You can insulate it with the same foam, foam, mineral wool, and if you still need to dismantle the box for this, you should immediately check how well the doorway is filled. If there are any cavities between the box and it, then the reason that the front door , sweats may lie in this. In this case, it is not the manufacturers who are to blame, but the installers themselves.

Please note, that in addition to warming the canvas and the box, you can also insulate the slopes from the outside, if the external finishing of the facade makes it possible to do this.

  • The tightness is broken. The door may begin to become covered with condensation if the tightness between the frame and the leaf has been broken, and it is easy enough to check - if there are drafts, then the problem is precisely the tightness. In this case, dew will begin to accumulate for the most part only around the perimeter of the box and canvas. In this case, it will be possible to eliminate the problem with the help of a self-adhesive rubber seal, which should be attached to the box and the canvas along its entire perimeter.

Important! If your metal door is the cheapest, and is also finished with decorative panels, then the manufacturers have correctly carried out anti-corrosion treatment of the metal under them.

If the panels are poorly fixed, and there are voids between the metal and them, then the door will start to sweat under the panels, and you will know about it when it breaks down.

  • Cold bridge. Another reason why the front door to the house sweats, even if it has excellent insulation, is the cold bridges that are eaten in almost every door. They are metal through elements, like stiffeners or a lock, which are not separated by thermal insulation or even voids, which is why they perfectly conduct cold to the inner surface of the canvas. Even if you make foaming of cavities in the canvas, only the following method will help to avoid partial "sweating" in the place where there is a cold bridge.

Useful advice! Sometimes it is simply not possible to avoid cold bridges - as a rule, this is a peephole and a keyhole, which is already enough for a problem to appear. But in the case of a lock, you have the opportunity to use at least a retractable pad, or simply not make a choice in favor of models with vertical crossbars.

  • The room is very cold. Yes, sometimes the front door leads to the corridor, but usually there is at least some kind of vestibule in the house. If it is not heated, but the air in it is warmer than outside, then the cold outside will lower the temperature of the inner surface for all the reasons listed above.

    What to do if the metal front door starts to sweat? Try to "even out" the temperature level of the inner surface of the canvas a little, as well as the air in the vestibule by heating. The fact is that the smaller the gap in indicators, the more moisture will be required for dew to fall. If you warm up the air to a level of _24 degrees, then with a humidity of about 50 to 60%, you only need to heat the inner surface up to +15 degrees, and this can be easily achieved using thermal insulation, creating tightness, and most importantly, warm air. But if the air temperature in your vestibule is +15 degrees, then with a similar humidity dew on the doors will appear already at + 4 ..

    . + 7 degrees, and the temperature of the door leaf made of metal without heating during frosts will be much lower.

Good advice! If your home does not have a vestibule, try to get rid of condensation by insulating the inside of the door and metal from warmer air by installing a wooden door. It should be installed immediately after the metal door leaf.

  • The room has high humidity.

    It will be very offensive if the canvas starts to fog up even in a heated vestibule - we remind you that the higher the humidity level, the less the difference between the surface and air temperatures is required to make the surface wet. For example, if the humidity is 80% and the air temperature is +24 degrees, then dew will begin to fall on the surface with a temperature of +20. 3 degrees. It turns out when the house is very humid and warm - this is worse than when it is dry and moderately warm.

Yes, fogging up the entrance metal door will not be a big problem for you if you buy very expensive models that have a thermal break of cold bridges, heating the box, atmospheric surface treatment or even a liquid insulation that is able to isolate the metal from air.

But it will not be necessary to remove such an unpleasant phenomenon if you yourself take care of good insulation, create the maximum possible tightness, and you will also understand at least a little in the table of air temperature and humidity indicators for the dew point.

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