If you notice that warmed mineralthe house did not become warmer with cotton, the temperature in the rooms is low, and the walls become damp, this may indicate that the insulation was not covered with a membrane. Modern housing is becoming more technological, in recent times, increasing demands for insulating materials, the quality of all elements of buildings and structures.
The issue of insulation was decided by the method of usemultilayer structures, which provide for the presence of fibrous insulation. Houses have become warmer due to ventilated facades, framed exterior walls, insulated ceilings and pitched roofs. But if you use mineral wool insulation, then he himself needs reliable protection, this is due to the fact that atmospheric moisture and wind pressure, as well as a couple of rooms reduce the thermal performance of the material and the building as a whole. If you want to maintain the design efficiency of the structure, eliminating the formation and accumulation of condensate in the elements of buildings, then you should use special membranes. They became a real breakthrough in the construction heat engineering, because without them it is impossible to imagine a modern house built with the use of thermal insulation.
Hydro windproof membrane does not absorb moisture,but contains many air channels and pores, which contribute to the movement of moisture inside and its retention in the structures. If cotton wool absorbs moisture, then its weight will increase by 5% of its own weight. Water will displace air, insulating characteristics will decrease, even if only 1% of moisture accumulates inside. With fluctuations in temperature, the water will freeze and thaw, expanding and destroying the internal structure of the insulation.
Even if drainage and enclosing structureswill work properly, then moisture can get into the wool from the premises. That is why there is a need to use building membranes that protect structures from atmospheric moisture and wind. Physically, any membrane is a semipermeable film that separates two media, it regulates the directional transport of substances. Some membranes, called building films, are not able to pass water and steam at all; they consist of perforated layers of polyethylene on a mesh basis.
The fire resistance of such films is also quiteThe actual question, which is solved in several ways. The non-flammable hydro windproof membrane, the photo of which is presented in the article, has flame retardants. Another solution to the problem is the impregnation of cloths or the application of protective compositions on them.
Quite often, novice wizards are askedthe question of which side of the insulation to install the membrane. If the façade is insulated with mineral wool, then a steam wrap film must be installed outside. If we are talking about a warmed roof, then anti-condensate, bulk and diffusion membranes are installed on top of mineral wool. When working with a cold roof vapor barrier membrane is placed below the rafters. When the walls are insulated from the inside, a complete vapor barrier is required, which is represented by a perforated film that is laid on top of the room. Hydro windproof membrane is installed below, if the insulated floor has a cold attic above.
When working with non-professionalMasters quite often there is a reasonable question about which side to lay the membrane. As a rule, vapor barrier films are two-sided, so it does not matter which side to turn the material to the insulation, but, as in everything, in this case there are exceptions. Anti-condensate membranes are placed inside the room with a textile absorbent layer. There are also metallized coatings on sale, which are one-sided. They have a foil layer that turns towards the living quarters.
Гидроветрозащитная мембрана, которая имеет Steam removal characteristics and is called diffusion, stacked according to the instructions. In the assortment of the same company, you can meet unidirectional or double-sided films. The orientation will be different staining of the sides, one of which has a pronounced marking. The most often colorful side is drawn outward.
If you are still not familiar with the technology, thenmust answer the question whether a ventilation gap is required near the material. At the bottom there should be an air gap, the thickness of which is 50 mm, it will be needed for weathering possible condensate. The possibility of contact of the vapor barrier with the inner lining should be excluded. The diffusion hydro-windproof membrane is installed on top of the thermal insulation, plywood coating or OSB. On top of such membranes, a ventilation gap should be made to drain excess water. In the roofing system it can be equipped by mounting the bars stacked in the construction of the counter grille.
When working on a ventilated facade, the interlayer is provided with perpendicular profiles or racks. The anti-condensation film has an air gap of 40 to 60 mm on both sides.
Hydro windproof membrane for the facadeFits with overlap, whose width can vary from 100 to 200 mm. For roofing, the material performs a waterproofing function, so this parameter may vary, depending on the slope of the ramps. An overlap of 100 mm is required for 30 °, it increases to 150 mm, if the slope drops to 20 °, an overlap of 200 mm is required for a roof that has a slope less than 20 °.
Hydro windproof membrane, which photo youyou can see in the article that fits in the area of the skate. If we are talking about diffusion material, then the overlap for it should be equal to 200 mm. In the valley, the material overlaps by 300 mm, with slight slopes along the entire length, the second layer should be covered using an additional strip, it will go to 300-500 mm.
Hydro windproof membrane, the advantages of whichwere illuminated above, should cover not only the total area, but also the end parts of the insulation. On the metal drip or drain chute during the installation process, remove the roofing membrane.
Required during insulation workHydro windproof membrane. What side to lay the material, it was mentioned above, but it is also important to solve the issue of the need for sizing the joints. Cloths necessarily glued to each other. As a result, you should get a completely sealed joint, for which special self-adhesive construction tapes are used. They are made on the basis of nonwoven materials such as polyethylene, butyl rubber, polyethylene foam, butyl or polypropylene. Such tapes are one-sided and two-sided, with their help it is possible to eliminate ruptures and damage to the paintings. You should not try to save on the use of conventional packing tape, which, among other things, has a small width. This causes the depressurization of the joints.
Nails with widehats or staples construction stapler. But if you want to get a secure mount, you should use a counterbribble system. More complex work may seem in the arrangement of the hinged facades. As soon as the bracket is in place, you should start laying insulation plates, each of which is fixed by two dish-shaped dowels. A diffusion membrane is laid on top of the insulation, which should be cut at the locations of the brackets. Through a layer of cotton wool, all this is fastened with dowels to the surface of the wall. The minimum number of fasteners per square meter should be four pieces. If it is possible to choose a place, a hole should be drilled in the area of the joint between the webs
Hydro-windproof membrane "Izospan AM" isthree-layer vapor-permeable material, which is used to protect thermal insulation and roof structures, as well as walls from moisture, wind, condensate and the action of the external environment. Laying should be carried out on the insulation, without forming a ventilation gap, this will allow to exclude additional costs for the crate. The material is characterized by high water resistance and vapor permeability, provides an increase in the life of the insulation and the design as a whole. The temperature range of application of the material is quite wide and varies in the range from -60 to + 80 °.
The hydrovaft protective membrane described above,reviews of which only the most positive, can protect the material not only from moisture and condensate, but also from negative temperatures, as well as direct sunlight. According to buyers, the installation can be done by any party, and this will not affect the quality of the vapor barrier. The material is based on a special film, which is characterized by high resistance to aggressive environmental influences.
Buyers emphasize that the membrane is capableprotect insulation from mechanical damage and tears. Within 3 months after laying the membrane can be left under the influence of ultraviolet radiation. Hydro-windproof membrane "Izospan" is characterized by a high degree of stretching and eliminates ruptures and deformation of the insulation.
Although the building membrane mayto cope with negative impacts for several months, she also needs protection. Therefore, as quickly as possible, it is necessary to make finishing work, if we are talking about the facade. Even if you try to seal all the holes and joints, the material can work effectively only in a tandem with a finishing coating. Indeed, while waiting for further work, materials may get wet in the rain.
