The front door is an attribute of any home. In addition to its beauty, reliability is also an important point, which is why such doors are made of metal. And metal has the highest thermal conductivity, which is why any metal entrance doors are susceptible to condensation.
But, if any doors are susceptible to condensation, then why is this effect absent on some, and on some - water flows in a stream?
It's all about the thermal conductivity of the structure ...
The thermal conductivity of a material is the ability of material particles to transfer energy (heat) between areas located in different temperature conditions - from more heated to less heated part body.
The fact is that the lower the thermal conductivity, the higher the thermal protection becomes, which is why leading manufacturers have front doors from the factory. have a low thermal conductivity of the canvas and there is no condensation on high-quality products, no matter how big the temperature difference between the street and premises.
The thermal conductivity of a material such as steel is 320 times greater than the thermal conductivity of wood, so steel is absolutely not prevents the transfer of heat to a colder environment, and water in the air falls into condensation on the surface metal.
The higher the temperature difference between the room and the external environment, the more urgent this problem becomes. That is why, most often, the owners of private houses are at war with such a problem, because it is in the house that the steel door is the barrier between the living quarters and the street.
The fallout of condensation leads to freezing of the door, to the corrosion of the box and to the appearance of dampness (fungus) on the walls.
So, only 3 reasons contribute to the occurrence of condensation:
- Lowered thermal insulation;
- Lack of tightness of the joint;
- Indoor humidity.
But, the manufacturer can influence the door design by closing only two of them. The third reason will have to be removed by the owner himself ...
So, in quality products, the manufacturer does:
A) Good tightness (multi-circuit) between the door frame and the door leaf.
B) Increases the thermal insulation of the door through the use of high-quality heaters and due to the constructive temperature gap of the canvas and the box, dividing them into two parts.
But the regulation of humidity remains on the shoulders of the owner, so it is important to ensure good ventilation in the house. The less water is in the air, the less chance of condensation!
But, if this condition is met for you, and condensate still appears, then you need to do:
1. We insulate all metal elements that are in contact with the room. Many people make a vestibule in order to increase thermal insulation. Sometimes polyurethane foam and a heating cable laid in the duct contour save.
2. We check the seal located along the contour of the box and door. Eliminate breakouts and jams.
3. We remove the door peephole (cold bridge), and hang curtains or a sliding pad on the keyhole.
When all three causes have been eliminated, rest assured that not a single drop of condensation will appear on your door!