Immediately, we note that mainly the appearance of condensation concerns metal entrance doors. For them this is a very urgent problem, wooden doors are less susceptible to it..
Before dealing with the problem of condensation and frost on the front door, let’s deal with the possible causes of this unpleasant phenomenon..
The first reason for the appearance of condensation on the entrance metal door is quite clear and understandable – a significant difference between the temperature inside the house and outside. If it is -10 ° C outside the door, and +23 ° C in the house, you must agree how condensation does not appear here.
The thermal conductivity of metal is almost 300 times higher than that of wood. That is why the beloved by many, popular metal entrance doors give off heat so quickly. They are cold to the touch; without proper thermal insulation, they cannot protect the house from heat loss..
The second reason comes from the first: the doors are simply too thin and not sufficiently insulated. There should be a layer inside the metal front door that will help it keep warm inside the house and prevent condensation and frost from forming.
The third reason: cold bridges. In addition to the leaf of the metal door itself, cold can be carried out:
- door frame;
- metal ribs.
That is, all metal parts of the door equipment that pass through the canvas serve as cold bridges. By the way, in a wooden door, a lock can also become a cold bridge, like a box and fasteners. Therefore, it is not necessary to say that the wooden door is completely protected from all problems with the appearance of condensation and drizzle..
Condensation on the front door is unpleasant in itself, and in addition can cause the following problems – locks and other metal parts will corrode under the influence of constant, high humidity throughout the cold season. Mold may appear on the slopes of the door, they will turn black, this is unattractive and unhealthy. In addition, a frozen lock is difficult to open..
You can fight condensation and freezing of the front door in the following ways:
- Order a high-quality, multi-layer door with effective insulation and insulation of all cold bridges. Yes, it will cost a lot, you will have to pay for the quality. But on the other hand, there will be no problems with retention of heat inside the house and water flow on the inside of the door initially.
- Insulate a low-quality, empty metal door inside. You can use regular styrofoam, but this is not a very effective option. It is better to choose a more modern insulation, which should be laid inside the door. There are specialists providing such services.
- It is advisable to coat the metal sheet with powder polymers having a weather-resistant treatment. You can also finish the door from the outside with panels that have been impregnated with special compounds that protect against temperature extremes.
- Cold bridges can be fought by filling all hollow metal elements with polyurethane foam. Also, the place where the door frame adheres to the door opening is carefully blown out with foam.
- Install an insulation tape around the perimeter of the box, it is simply glued to the canvas. The lock can be covered with a special sliding cover – it will not become a reliable insulation, but the direct access of cold air will block exactly.
- Insulate the slopes, for example, with foam or mineral wool, and plaster and paint on top.
Most effectively, a vestibule or veranda will protect against condensation on the front door and the appearance of ice. Such a simple unheated passageway in front of the house becomes a layer that does not allow the coldest air to get to the front door. And even though it will be cold in the vestibule itself, it is still warmer than outside. That is, the temperature difference will be noticeably lower.
For the same reason, another front door, an additional one, helps to get rid of problems with condensation. Inside the house, it is advisable to install another door, preferably a wooden or plastic one, so that the metal is less exposed to temperature differences. The more layers, the warmer – this principle works not only when dressing in cold weather, but also when insulating a house, remember this.