It's no secret that good vapor barrier is a house under construction of the most important aspects of modern low-rise building. Of course, in this industry periodically appear new and better building materials.
In theory, the ideal insulation design should consist of the following layers: a protective layer outside the insulation, proper insulation and airtight film. The insulating material must be lined and protected from all sides. The destruction of the building structure arises when the load of the humidity exceeds a drying capacity of the structure.
Such loads within the structure of the wooden buildings can be caused by various factors. For example, the banal water penetration through the lining of the roof (the so-called diffusion processes). This in turn leads to the appearance of mold, literally « eats » materials of building structures. Therefore, preventing the destruction, seek to reduce the burden on the humidity. However, the payment is often not taken that 100 percent protection from moisture is not possible.
The main cause damage to the external humidity load which in principle can not be excluded. This phenomenon such as a high initial moisture content of the construction materials, airtight surfaces leaks, penetration of moisture through the adjacent brickwork. Given all this, it is important to pay particular attention to the ability of the structure to drying. Indeed, the higher the drying reserve, the greater load may be unplanned humidity.
One way is drying structures, so-called, « drying the inside ». Its effect is the main property of the diffusion flux, which is always directed from the hot side to the cold. Those. whenever the outside temperature insulation higher than that inside, the moisture in the building structure directs inward. This phenomenon occurs in the sunny days of summer, autumn and spring, but winter with increased moisture flux structural damage still may occur. Thus, an ideal vapor barrier system must have a high diffusion resistance is low in the winter and in the summer, i.e. « intelligent » arranged under the level of the ambient relative humidity. In warm climates, such a system will be open for diffusion and humidity provide the drying out of the building structure; cold will be the contrary impervious to diffusion and protects the building from moisture.
Studies have shown that the system effectively protects against moisture with bitumen roofing design screens and with a tin coating in the harsh winter long, even in the highlands. In summer, the system contributes to the rapid drying of moisture inside. If facts confirm this, it may be noted that depending on the difference in vapor pressure drying capacity corresponding to about 80 g/m2 of water a day or 560 g/m2 per week.
In general, studies conducted in « combat » conditions in the various climatic zones showed great potential of new materials protection « pro clima INTELLO & reg; ». One additional factor drying designs is the presence of the inner cladding, in turn retarding diffusion. Such materials are, for example plasterboard panels or profiled paneling. It is also important to note that the use of intelligent systems of isolation is not allowed in areas with constantly high humidity: swimming pools, kitchens, greenhouses.
Unfortunately, in modern construction vapor barrier is removed is not the most important role. But do not forget that the consequences of the airtightness is poor indoor climate. This means that the room will be very hot in summer and cold in winter and dry significantly. From a biological point of view, in such areas will be difficult absorption of oxygen and respiration at the cellular level, which will contribute to the development of infectious diseases and fatigue tenants. Fortunately, time does not stand still, specialists create more sophisticated and « smart » building materials, by which life in your apartment or cottage will become more comfortable and secure.