What could be more difficult to repair, and not evencurrent, namely capital? That's right, building a house. There are much more problems here, but it’s hard to count the various solutions and forks when you have to choose one or the other. So it will have to work notably for the house to stand for a long time, and during the whole period of its operation did not leak, the windows were not blown, and the foundation did not collapse under the weight of the building. But today there will be a conversation about something else - about one of the final stages, in fact, construction. That is about the roof. And more specifically, how to lay a vapor barrier on the roof.
Strictly speaking, the production technology anduse is simple to impossibility - another additional layer of material that does not let moisture get into the roof. A vapor barrier is usually a film made from several types of materials, which will be discussed a little later. So, as you can see, there is nothing supercomplex in this.
A little higher was said a few words about the long maintenance of the house.
In the construction "jargon" can be found suchconcept like roofing pie. This is because the roof is just something like a pie. That is, many layers of different materials are superimposed on each other - they all play different roles, and therefore none of them should be excluded. It can cost you anything, right up to a complete roof replacement soon, but you definitely don’t need it. There is no pleasure in such works, all the more completely meaningless.
Vapor barrier for the roof of the house is set as the lowest layer of the roof. From top to bottom, the scheme will look like this:
That is, this layer is vital to protectall the others - if it is not in place, a mold will form inside the roof, the materials will become deformed and collapse. All this can even lead to the collapse of the erected structure.
Today the construction market is extremely developed, andtherefore, it is almost impossible to find suitable material for anything. In addition, it does not require something too special. The same materials that are used for waterproofing are also suitable. So you can just buy more plastic film and use it not only in the middle of the "cake", but also at the bottom too. This method is much easier than others. In addition, you can also buy a polypropylene film or even a membrane. These three types are a little bit lower and separate. In addition to them, there are others, but not so common, for example, izospan, although it is quite promising.
Это самый легкодоступный компонент из всех, which can be used as a vapor barrier for the roof. Moreover, as has already been said, it is universal. However, for greater structural strength due to the lack of special qualities of rigidity and density, films with reinforced fabric or mesh will have to be used.
Such films produce two different types -perforated and non-perforated. The first are used only for waterproofing the roof, but the second - just for your current purpose. The fact is that perforated films are made with holes, which makes them unsuitable for vapor barrier. At least theoretically. In practice, such a film can also be used as an insulator.
PE films are produced in rolls, andso you will lay them down - for the reason indicated, you should take care to purchase sealant in advance. It is absolutely necessary to create a vapor proof curtain, the role of which this film will assume.
This type is mainly used forwaterproofing works. It is still sometimes used for vapor barrier, but only when there is nothing else on hand. Otherwise, it is better to get a different look.
By design, they consist of two layers. One of them is a combination of viscose and cellulose, which is used to absorb excess moisture and subsequent drying.
This material is quite expensive, but it is understandable.- it is much more modern. In fact, the membrane is closest to perfection, that is, to complete the vapor barrier of the roof and protect it from external influences. However, using them for this purpose would be unwise enough - waterproofing is much more suitable for them, especially for double-layer specimens. These models (not only bilayer, but to a greater extent) are interesting in that they do not pass water, but they let in steam, which is then retained in the upper layer and evaporates.
Of course, it's always much easier to callprofessionals and let them do it. This gives a sufficient guarantee of quality, and besides, you will not have to work hard for an invisible after result. But if you still want to make a house from top to bottom on your own, then the advice given here should be useful to you.
Best disassemble the example of izospana -the films are quite easy to lay, and instructions can be found almost everywhere. In addition, the technology of laying a vapor barrier here is almost the same, the differences are only in small details.
From the tools that are needed tomake installation of vapor barrier, you only need a construction stapler. If he is not at hand, do not be discouraged. It is possible to do with a hammer and a certain number of nails. The latter, by the way, is best to take galvanized.
In addition to isospan, whose properties are described above, you will need the following materials:
Vapor barrier for the roof is laid according tospecific pattern. As you remember from the previously submitted information, it is located at the very bottom and is attached to the rafters. For this first step, a construction stapler or nails will be used.
Izospan is produced in the form of rolls, because in the corners, as well as on the vertical and horizontal joints, it is necessary to overlap. This will help avoid steam leakage into the thermal insulation layer.
The last installation step is to securethe resulting layer using the previously mentioned adhesive tape. All joints, corners, points of contiguity of the material to the walls should be carefully glued with such tape. Such a thorough approach is needed to seal any possible passes.
In addition, if you sheathe the vapor barrier on top of the decorative material, it is necessary to leave a gap of about five centimeters. This will allow ventilation.
In fact, the vapor barrier is the samenecessary process, as well as vapor barrier of the roof, especially if your construction is assembled from wood. Here, humidity is generally a critical indicator. In addition, this is necessary if there are bathrooms and bathrooms downstairs - there will always be more moisture there than in the rest of the house. This also applies to kitchens. Also, the overlap between the basement and the first floor is often equipped with a vapor barrier - especially if the rooms are heated. Accumulation and evaporation of condensate in this case is inevitable, which makes the installation of a vapor barrier mandatory.
Here the answer is unequivocal - to do.The second option is fraught with serious consequences. In fact, there is nothing particularly difficult in this process, and therefore they should not be neglected, as well as not paying attention to small details, which may later become decisive.
It should also be noted that the vapor barrier for the roof,the price of which is not so high, especially in comparison with the rest of the cases and materials needed during construction, is available to many. So, the films will cost you about one and a half thousand, but these are the cheapest (from 660 rubles per roll). The better the material, the higher the price. For example, the most expensive membranes cost about seven thousand rubles.
