The function of insulating material in constructionIt is not the last place. Despite the improvement of the characteristics of finishing materials, only reliable and durable insulators can save the house from heat loss and the harmful effects of moisture. At the same time, traditional heat insulators gradually lose their relevance against the background of increasing requirements for the operational qualities of buildings. Their place is taken by a water vapor barrier film, which also contains at its base thermal protection, but does not allow its overwetting. In essence, it is a multifunctional protective barrier, with the help of which the structure can be protected from cold and moisture.
Понятие гидропароизоляции усложнено функциями material that may bear such a name. In a conventional representation, this is a membrane that is used to ensure the protection of a heat insulator. The most important thing is the phenomena and influences from which it protects. Depending on the field of application, this may be steam, moisture, cold, wind, etc. The composition of the hydro vapor barrier film also differs - in this respect, profiled and flat membranes can be distinguished. The former are made of polyethylene in the form of sheets with round or square protrusions resembling thorns. Flat membranes are produced not only from polyethylene. Polyolefin and even polyvinyl chloride are also used in production. The result is a film whose thickness does not exceed 2 mm. Usually in the arrangement of roofs and finishing materials a flat film with a thickness of less than 1 mm is used, and thicker membranes are used to protect the foundation.
Technical data on propertiesvapor barrier differ depending on the specific material. For example, it is worth considering the characteristics of the water vapor barrier film "Izospan". According to reviews, this is one of the most popular materials on the Russian market in this segment:
Usually in the construction of roofing cakessteam and vapor insulators perform the functions of a direct barrier against moisture, as well as provide wind protection. This is exactly the case when high requirements are imposed on insulators with respect to strength and durability. As a rule, waterproofing film for the roof is laid on the insulation without a ventilation gap. This decision is due to economic feasibility in the form of reducing the cost of the device lathing between the individual heat insulator and the membrane. Windproof films with effects of steam and water insulation can be used as underlaying layers in roof structures with different inclination, since fixing is provided over the rafters above the insulation. The resulting coating acts as a warming element for the supporting structure, protecting it from penetration of under-roofing condensate, as well as from wind, rain and snow.
Installation of the main walls of the house structure alsoinvolves the provision of steam and waterproofing. In this case, the film protects the material from atmospheric moisture, wind gusts and powder. But there is, as evidenced by the reviews of masters, another important function, which should have waterproofing film for roofing and frame walls - is the ability to remove vapors from fibrous insulation material.
Installation of the film is carried out under the outer skin.houses on the outside of the insulator. It is desirable to mount it across the frame on top of the insulation in a horizontal position. The joints are made with an overlap of 10 cm. The final fixation is performed by a stapler. It is important to bear in mind that when performing further finishing, a ventilation gap of about 3-4 cm should be left. It is necessary to ensure the removal of moisture.
Материал следует укладывать между отделкой the ceiling and its rough surface, as well as on the floor beams over insulation. In this case, an increased gap of up to 20 cm is also made. In order to ensure the tightness of the barrier, a hydro-vapor barrier film for the floor is additionally fastened with a special tape. Such material is also supplied by insulator manufacturers and serves as a connecting element.
It is important to note that if the premises connectedinsulated interfloor overlap, have different temperature regimes, it is necessary to select the insulation material with advanced functionality. Thus, in addition to hydro and vapor insulation, it is necessary to provide for the ability of the barrier to reflect heat fluxes. For example, similar qualities should have waterproofing film, which is planned to be laid in the attic or attic.
Providing insulation of frame walls from the insideTwo tasks are performed: vapor barrier and preventing the spread of unsafe particles of insulation in residential premises. The membranes are fixed on both sides of the insulation on the supporting foundations in the form of struts and beams. Also, if possible, hydro and vapor barrier film can be attached to the surface of the rough finish. Installation is again performed using a stapler or galvanized nails. But in this case the overlap should be not less than 15 cm. If you plan to further finish the walls with clapboard or plywood, the insulation can be fixed with the help of vertical wooden slats that have been antiseptic. Also between the finish and the membrane is stored 3-4-centimeter gap.
In the selection of any insulating materialthe value of the structure that is planned to provide this protection increases. That is, to begin with, the threats to the place of use are determined, and then the vapor barrier film is acquired. How to choose this material - a difficult question, it should take into account several points. First you need to decide on the origin of the membrane itself. This is usually polyethylene. It is advisable to choose a perforated film, as it is the most durable. With skillful installation, it can provide a durable and effective barrier to moisture and winds.
Если же стойкость на разрыв не является a fundamental criterion, then a flat vapor barrier film may be suitable. The price in this case will be low - a roll can be purchased for 1000-1200 rubles. If you purchase a reinforced film with a metal layer, then you should be ready to give for it 2000-3000 rubles. But with its help it is possible to effectively ensure not only functional isolation, but also durable.
More recently, the negative factors from whichThey use hydro and vapor insulation, builders and architects sought to exclude due to the choice of certain materials for structures and finishes. But this approach significantly limits technological solutions. The use of insulating membranes, in turn, practically does not entail such effects for the home. This, in particular, confirms the film "Tyvek solid" hydro and vapor barrier, reviews of which indicate the benefits of its use. Reducing the moisture content in the space between the finish and the rough coating, while maintaining the integrity of the insulator - only part of the benefits that were provided by the insulator.
With all its popularity of membranes for hydro andVapor barrier is still a relatively new invention. The first of this group of materials on the market appeared insulation, however, its use in areas with high moisture was inefficient and necessitated another protective layer - this is how hydro vapor barrier film appeared. How to choose a suitable membrane and how to install it correctly - these are the main issues facing consumers. And the manufacturers of these materials are working hard on them, improving their performance and styling techniques. At this stage, companies can offer highly efficient insulators that can not only keep insulation from moisture, but also provide a stable barrier to precipitation and wind.
