Do you need a vestibule in the house? The opinion depends on the type of heating

He designed his house without a vestibule or an internal corridor separated by a door. The area of ​​the house is small and the vestibule can only be built outside the house. But I don’t want to do that. The plans include only a porch with columns and a hip roof in the style of the main roof.

The process of my construction can be viewed, for example, here

It is known that the vestibule helps to retain warm air indoors, especially in frosts and in cold climates, it is simply necessary. In village houses, almost all have verandas (large vestibule). But here is the opinion I managed to hear.

A couple of years ago, my relative built a house (also made of aerated concrete), with warm floors on the ground floor. And when I visited him, I noticed that there was no vestibule, but inside the house there was just a corridor without doors leading from the entrance.

I decided to ask if he suffers from the cooling of the first floor with frequent opening of the front door? The answer is this: the absence of a vestibule in his house has no effect at all. This is due to the fact that it has warm floors in all rooms on the first floor - and in the corridor too.

The logic is this. If the house is heated from radiators, then when the front door is opened, a convection flow is created: the warmer air under the ceiling goes out into the street, is replaced by cold air from the street that goes along the floor. This can be schematically depicted as follows:

That is why thermal curtains are installed in shops, shopping centers with a large number of building visitors. They are located at the top. It would be more logical to place the heat curtain at the bottom.

But the warm floor at the front door just plays the role of such a thermal curtain - it heats the air, it rises up and prevents the cold from entering the house. Not 100%, of course, but to some extent. At least there is no strong convection flow when opening the front door. The tambour limits the exit of warm air in large volumes.

At the entrance, you can even increase the temperature of the underfloor heating - this will be even better in winter to help save heat when you open the front door.

Another issue is the frost on the front door, which forms in winter in houses without a vestibule. You need to install high-quality doors, specially designed for harsh climates. Namely - with a thermal break. Ice does not form on them. Or, you can install a second entrance door with a large wall thickness if a simple metal door is installed.

Another interesting question: how much heat is lost in a house without a vestibule? One reader of a well-known forum counted at one time:

Figures 2012 Even if you multiply them by half - heat loss in the amount of 1000 rubles. for a season when heating with gas - not such high costs. Yes, when heating with another energy carrier, the amount will be different.

The absence of a vestibule has a strong effect in houses not only without warm floors, but also in wooden, frame ones. The heat capacity of the walls in them is not great. Warm air came out and it takes more time to heat cold air with radiators. Walls of stone (made of bricks, blocks) have a much higher heat capacity. It is more difficult to cool such a house by opening the doors. A warm floor immediately creates an even microclimate in rooms with a more or less uniform air temperature.

The conclusion is this: if there is no vestibule, install heated floors, at least at the entrance after the front door. Tambour is a must in houses with a walk-through corridor without warm floors.

Those who have warm floors and no vestibule - you strongly notice the cooling of the premises with frequent opening of the front door - write in the comments.

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Photo taken from open sources, from Yandex. Pictures

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