Heat and vapor insulation of frame structures is extremely important, as it is necessary to ensure the retention of heat inside the room. This technology implies the use of special insulation materials in the construction of walls, which are distinguished by their unique thermal insulation and vapor barrier properties. If it is necessary to ensure the dryness of the entire building, then the use of such materials is the most optimal solution.
Features of the
Vapor barrier of a frame house involves the use of special porous membranes that help get rid of moisture… A distinctive feature of such membranes is that they allow the building to "breathe" and do not turn it into a completely enclosed greenhouse… It is also possible to achieve optimal air exchange due to the fact that the frame house is made of wooden structures, which contributes to the passage of air.
Sometimes the owners of frame houses use ordinary plastic wrap when creating a vapor barrier with their own hands. This method is extremely ineffective and dangerous, since the film absorbs moisture and, as a result, the materials begin to rot. The use of a special vapor barrier film in this context is more effective, since this material is famous for its complex structure and includes a huge number of layers.
On the market, you can also find membranes with a clear purpose. For example, some can be used for vapor control only under certain conditions. There are membranes on sale for use in non-residential premises or in conditions of high humidity, for example, when creating baths.
Basically, the vapor barrier of a frame house is carried out using the same technology as for other houses, but there are some distinctive features. The main difference is that the foundation and the main structures are not insulated here, so you should take care of using other materials.
Installation of a vapor barrier sheet is a fairly simple process that anyone can handle. It will be enough just to correctly lay it down and fix it. For this, tape or a special construction stapler is usually used. In order to achieve maximum reliability and efficiency, all gaps must be sealed with tape to prevent wrinkling.
Despite the ease of vapor barrier with special insulation materials, it is necessary to be extremely careful when laying, since any mistake can make all materials completely ineffective, as a result of which a complete replacement of insulation will have to be carried out.
What material is better to choose?
The effectiveness of the vapor barrier of a frame house mainly depends on the what kind of materials were used in the process of carrying out the work. On the modern market, you can find two types of vapor barrier materials: film and membrane. The main difference is that when using film materials, you will need to create a small gap for air to enter. Without it, the accumulated moisture will not be able to evaporate, which will lead to the use of such vapor barrier materials to be ineffective. Membrane options in this case are optimal, since they just need to be installed on the insulation.
Among the main options for vapor barrier materials are the following
Products with maximum vapor barrier… This includes a special film that traps vapors. It can be polyethylene products, as well as foil. Experts recommend using such an insulating material in rooms that are characterized by a high level of humidity and do not allow water to pass through. For example, this material has worked well in bathrooms where it is necessary to maintain the optimum temperature inside
Foil membranes. It is a fairly effective material for any wet room, including saunas. Thanks to its unique technical characteristics, it does not allow moisture to penetrate the walls of the room. A distinctive feature of these materials is the aluminum coating, which repels heat radiation and retains it
It should be noted that such materials are much more expensive than plastic wrap, but their effectiveness is several times higher.
In order to achieve absolute moisture impermeability, care must be taken on the creation of an air exchange system, since moisture initially accumulates on the finishing materials. If ventilation is not installed, moisture will penetrate through the micropores into the wall, which will damage the finish and rot.
Low permeability materials… This includes options that are able to partially retain and pass moisture, as well as materials characterized by the presence of two-layer membranes
With variable vapor permeability. Based on this technology, vapor barrier roll materials are produced, which differ in variable conductivity. In other words, if the air in the room or outside is too dry, then these materials will not let steam through. If the concentration of moisture is too high, then special micropores will open, which provide reliable protection of the room. This type is considered one of the most effective and reliable. This canvas can only be installed in combination with a special windproof membrane, which will help to get rid of accumulated condensation. If it is already inside, it will be able to exit with the help of a special diffuse membrane, which is located above the outer layer
It is best not to save on materials and choose the highest quality products, since the efficiency of the entire system as a whole depends on them. Usually, cheap options are not able to cope with the protection from moisture or its withdrawal, which leads to deterioration of the insulation and becomes the reason for the need to replace it. In the process of choosing materials, you should also pay attention to the service life of the products.
If the vapor barrier film or membrane is fragile, then it must be marked accordingly. Such canvases cannot cope with their tasks for a long time, since when interacting with oxygen, they begin to rot.
Considering the unique features of vapor barrier materials, it is necessary to pay close attention to the technology of their installation. All membranes must be installed in the inner part of the house for insulation, since only in this case they will be able to hold condensate. This installation process is straightforward and does not require any care or careful sealing. It is best to lay the membrane over the entire area of the room, including the overlap, since this is the only way to achieve an effective result.
The selection of the most suitable material depends on how much moisture there is in the structure. As fastening elements, it is best to use special reinforced staples, which are shot with a stapler. At the joints, the vapor barrier can be overlapped.
The styling process looks like this:
- the layout of the material on the surface of the insulation and its attachment with a stapler;
- gluing joints with adhesive tape. also in the joints, you can use special wooden strips, which contribute to optimal vapor barrier;
- additional holes should be created near sockets and other communication networks, and then they should be sealed with mastic.
This method of vapor barrier walls will ensure the creation of a reliable barrier that protects the insulation from moisture.
During the installation of the vapor barrier, it is necessary to pay close attention not only to the walls, but also to the partitions. For internal partitions, vapor barrier may not be needed, since moisture is usually not there. But for walls that are subject to high levels of humidity, it is better to use membrane vapor barriers. It is necessary to choose a certain type of membrane depending on what kind of finishing materials were used in the repair process.
To ensure the isolation of the room from dust and other contaminants, diffuse membranes can be used, which have proven themselves excellent in the waterproofing process.
For floor and ceiling
The vapor barrier for the floor and ceiling areas in the frame house is laid in the following sequence
- Installation of the subfloor or intermediate floors, which are attached to the joists.
- Installation of vapor barrier materials over insulation… At this stage, you must be extremely careful that the vapor barrier completely covers the insulation and does not leave any empty spaces. For fixing, you can use a regular construction stapler or tape.
- Stitching using drywall or wooden boards.
The choice of the most optimal vapor barrier material for the floor and ceiling depends on the room in which it is used. For floors, the ideal solution is reinforced insulation, which differs in thickness and is considered the most effective solution in interfloor ceilings.
Experts advise to take a responsible approach to the process of waterproofing and vapor barrier of the room. It is on the quality of the work performed that the safety of the material inside the frame house, the level of thermal conductivity and other indicators depend.
It is best to abandon the idea of using cheap materials, since they are not able to provide reliable protection of the insulation from the negative effects of moisture for a long time. Insulation only works properly if all of its components are of good quality.
Thus, the vapor barrier of a frame house is a set of measures aimed at protecting the insulation from moisture. It is necessary to choose a certain type of material depending on the characteristics of the structure itself, climatic conditions and financial capabilities. In the process of choosing a vapor barrier material and sealant, you cannot save money. It is best to glue all the joints with high-quality materials that can last a long time and cope with the tasks assigned to it.
In order to properly carry out the vapor barrier of interior walls from the inside and outside, you should carefully study the device of each material, sheathe the coating with insulation and fasten only high-quality insulation.
About other nuances of the vapor barrier of a frame house in the video below.