In modern construction, several types of various protection against moisture, steam, wind, and groundwater are used. The main purpose of protection is to prevent moisture from accessing the insulation. The appearance of the films is so similar, they are often confused by professional builders, let alone a simple layman. Especially often confused wind protection with protection against steam. We will figure out how to distinguish vapor barrier from wind protection, why they can not be confused.
The problem is that outwardly the films are very similar, it is almost impossible to distinguish by eye. Conscientious manufacturers put a piece of paper on top of the roll indicating the purpose of the protection is rolled up.
It often happens that rolls in stores do not have a liner. The state standard for designations is not provided. Sometimes it comes to, sellers do not know which film lies in front of them.
But there is one simple method of determining with which you can practically with your eyes closed determine what protection lies in front of you. You need to take the edge of the film, firmly press it to your lips and blow it with force. The vapor barrier film will not let air in, the windproof film will let air through. This method, the simplest and most effective among all others.
Why you can not confuse barrier films
Such barriers are used mainly in the construction of frame houses, but can be used in other types of construction where different types of insulation are installed. A large amount of steam accumulates in the rooms of the houses, these are:
- people's breathing;
- cooking food;
- watering home plants;
- wet cleaning.
Moisture released into the airspace of the rooms settles on the walls and ceiling. Leaking through the walls settles on the heater. Wet insulation fails. The house will not keep warm. Such a room will be ruinous in terms of heating.
To avoid this, it is necessary to install a vapor barrier between the inner wall and the insulation. She will block moisture. The insulation in this case will work properly. The house will be warm and comfortable.
Wind protection is installed between the outer wall of the building and the insulation. Serves to remove moisture from the seal. The structure of the windproof plastic film is the presence of microscopic funnel-shaped cones.
Their essence is to let drops of water out. Water molecules falling into the cone from the wide part, moving away through a narrow hole. From the outside, the droplets cannot get inside due to the too small holes of the narrowed part of the cone.
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