First of all, you need to be guided by the manufacturer's instruction, where it is clearly described which side to lay windproof. If there is no such instruction, there are a number general recommendationsApplicable for windproof films:

• windproofs are steel to the insulation "Various" side, if the other is not specified in the instructions;
• if both sides are the same, the film is attached to the manufacturer's logo outward;
• windproof without labeling and distinctive qualities of one of the parties can be put in any convenient way.

Often, manufacturers roll rolls so that the windproof is as simple as possible - along the rotation of the roll.

Windproof films of different types, stacked in different ways:

1. Simple windproof. These are perforated single-layer films that can step by any side to the insulation, as they have bilateral vapor permeability.
2. Wind-moisture protection. These are two-layer films that are stacked by the moisture-repellent side outside. Such a side is smooth, often with the manufacturer labels or painted in another (not white) color.
3. Superdiffusion membranes. Such material has a multilayer structure with high water and vapor permeability. Putting the membrane is necessary from the outside of the insulation and only the marked side outside.

Laying windproofs on the floor

On the inner floors, the film is spread over the insulation to the marking outside, and the monophonic side inside.

And to protect the wooden floor from purging with cold wind out of the unclosed base foundation, The film is steed on the draft floor without gaps close to the insulation. In this case, it is laid in inscriptions down.

How to get windscreen on the roof

Single-layer windproof films Stay under the roof by any side. But two-layer - only a smooth side up.

Some films and membranes are resistant to ultraviolet due to special coating. The manufacturer necessarily indicates this parameter. Such windshield is attached to the colored (protective) side upwards.

How to lay windproof on the walls

On the walls, windproof is placed on the outside directly on the insulation (marking or color outside). It is necessary to ensure the ventilation between the film and exterior finish. In order for windscreen to provide an adequate level of protection against moisture, it must be attached horizontally from the bottom up with the admission of at least 10 cm. Inside the walls, vaporizolation is laid - it is very important

Almost every residential premises need vapor barrier. What it is? What type of material is best suited for a vapor barrier? And what side to put it to the insulation? These and other issues relating to vapor barrier and its installation are answering our specialists in this article.

1. What functions perform a vapor barrier? The fact is that the insulation is usually customary to be installed on the inside of the premises, and it is in contact with warm air May be covered with water droplets. Where does the moisture come from? Explanation Simple: Steam settles on the walls of the room and when cooled, moves from a vapor state into liquid. To prevent such a situation, you need to install vaporizolation.

Experts allocate several basic functions of a vapor barrier:

• an increase in the life of thermal insulation materials;
• protection of the room from excessive humidity.

Parosolation must be mounted in such premises as:

A vapor barrier is mounted mainly on the ceilings where it settles a large number of couple. Walls that are not insulated from the outside also need it, but in this case the vaporizolation will be laid outside the building.

1. What are the best use? Using a specific type of paro insulating material It depends on the intention of the vapor barrier - indoors or from its outside. Therefore, experts call such basic types of materials by which vapor insulation are mounted:

• painting (bitumen, dispatch, mixtures of a resinobuitum, etc.) - are applied directly to no insulated surfaces (it can be roofs, ventilation pipes and the like);
• film (films made of polyethylene, polypropylene, diffuse membranes, antioxidant films) - These types of vapor insulation materials are excellent for the arrangement of private houses, both as the main vapor insulation layer and for the installation of an additional layer, protruding the protection against roof leaks.

1. What side do you need to lay vaporizolation? When laying vapor insulation film materials, it is necessary to take into account the main rule: the smooth side is located directly to the layer of the insulation, and the rough should be addressed inside the room itself.

In case when parosolation material Equipped with an aluminum layer, laying as follows:

• shed face is applied to the insulation;
• the brilliant smooth side must be addressed inside the room.

On the contrary, act when laying polyrophy vapor insulation materials:

• smooth side need to be attached to the insulation;
• schedule to turn inside the room.

But these features of materials are taken into account when there is a layer of insulation, already mounted earlier on an insulated surface. If the insulation layer is missing on the surface (for example, the outer sides of the walls of the buildings), then the vaporizolation is fixed directly to the frame:

• the smooth side must be reversed to the wall;
• schelchava side is sent material to the street.

It is easy to determine the smoothness or roughness of the vapor barrier material: it is enough to spend the hands on its surface. Note that the polyethylene film is the same on both sides - smooth. Therefore, the installation is facilitated, such a film is placed by any side to the insulation.

1. Are there rules for laying vaporizolation? Experts argue that such rules are indeed. There are several of them:

• the canvas of the insulating material must be putting the brass;
• clamping Cleaning is made by a special fixer - construction scotch (the only condition is to not allow air from entering);
• monitor the integrity of all layers of vapor barrier materials.

Be sure to check the presence of defects - they must be absent on the material for vaporizolation in principle. Since any crack, knife or hole can be caused by moisture condensation, which will be constantly accumulated on the interior of the surface surfaces (especially the ceiling).

Experts advise on the installation of vapor insulation materials thoroughly familiarize themselves with the instructions that are attached to them. In this instruction, the main point is necessarily prescribed, which side of the material for the vapor insulating layer should be considered an external one, and what - internal. Although, as already mentioned, this can be defined on the eye and to the touch on some signs:

• different painting of the parties (the light side is placed to the insulation);
• texture (styling depends on the characteristics of the material itself, as stated in this article above);
• free rolling roll (the party, which material is facing the floor, is usually considered internal and stacked to the insulation);
• the smooth layer is usually considered internal, and the darous - external.

When installing vaporizolation, the main thing is to put it correctly to the insulation (if any). It will help save it. heat insulating properties and extend the deadlines. If vaporizolation does not arrange, then insulating materials Due to the constant impact of moisture, they will begin to gradually come into disrepair, which will lead to the rapid depreciation of the main elements of the construction of the building itself. This is especially true of private residential buildings: indoors becomes cold, and additional costs for their heating or heating will be required.

Which side to lay vaporizoation to the insulation?

Which side to lay vaporizoation to the insulation? Almost every residential premises need vapor barrier. What it is? What type of material is best suited for vapor insulation

Which side to lay vaporizion to insulation

Heating roof or room with thermal insulator (mineral wool, glass gamble, loose foam), able to skip and accumulate moisture, it is necessary to mount a vapor insulation layer. The moisture that fell into thermal insulation significantly worsens its operational properties, increasing the thermal conductivity. In addition, due to the wet environment, wooden structures with which the insulation contacts is quickly starting to be rotated and collapsed. At the stage of preparation for the warming of the roof or at home it is important to understand which side to lay paosoolenia to the insulation - the violation of technology will lead to the fact that steam from the room will penetrate into heat insulating layer.

What a steamer is needed

Varieties of vapor insulation materials

The priority question is a choice of material that will protect the insulation from moisture. Classic rubberoid and pergamine, with the help of which hydropara insulation was performed, gave way to modern polymer films with various operating parameters. The membranes used in construction are divided by vapor permeability to completely impenetrable films and partially permeable (diffusion).

Manufacturers offer vapor insulation membranes of the following species:

• polyethylene film (can be used, insulating roofing or floor, vapor and hydraulic barrier);
• reinforced film from polyethylene (distinguished by increased strength);
• follicated with aluminum film (used for internal insulation, mounted on the reflective side to the room - additionally helps to maintain heat, primarily designed for use in saunas and baths);
• the film with an anti-condensate coating (prevents moisture condensation is intended for installation in the composition of structures with metal elements, prone to corrosion - professional flooring, metal tile, etc., the film treated with the heat insulator is mounted).

Reinforced film from polyethylene If, \u200b\u200bwith the insulation of premises in the house, a completely impermeable film is used to create a parobacker, it is necessary to provide effective ventilation of the premises capable of outputing the excess moisture.

Parosolation films with porous structure differ in diffusion ability. Due to the pores in the moisture barrier from the insulation goes outward, thanks to which the thermal insulator retains its operational properties, and in contact with it metal constructions Do not rust, wooden - do not rot. Among vapor-permeable membranes vary:

1. Pseudodiffusional. For days, up to 300 gr / m 2 evaporations are passed.
2. Diffusion. The number of transmitted evaporation per day is from 300 to 1000 gr / m 2.
3. Superdiffusion. The evaporation indicator exceeds 1000 gr / m 2.

The vapor barrier film is referred to effective protection From moisture and used for internal insulation of structures (from the side of the room). If pseudo diffusion membrane Mount on top of the fibrous heat insulator on outdoor wallThe parobararier will delay moisture in the insulation. For facade insulation Diffusion and superdiffusion membranes are suitable, which simultaneously serve as a wind-harder.

Superdiffusion membrane

Principles of installation of a vapor barrier

Staying vaporizolation - an important stage Works on the insulation of structures with fibrous materials capable of accumulating moisture. Work is conducted as part of the repair or reconstruction of the house or at the preparation for finishing new buildings. It is necessary to know how to properly fasten the membrane web between themselves to provide a solid layer that protects moisture on the penetration of moisture, how to fix the film to the designs. Before laying vapor insulation filmIt is also necessary to determine which side it is required to be placed to the insulation material.

Preparatory stage

For insulation block or wooden house, Bath arrangement, heat-insulating materials that need to protect against moisture accumulation are used. To this end, on the walls inside the house, on the ceiling or floor, on the inside roofing cake Mounted material that does not transmit evaporation. Either the diffusion membrane with facade insulation.

On the preparatory Stage You should choose a variant of vaporizolation, taking into account the features of installation and requirements for the characteristics of the film. Popular options include "Izospan" (and its analog megaism) - membrane material with high operational parameters. The manufacturer offers a line of membranes with various technical indicators, which allows you to choose the material depending on the purpose - vapor barrier for the roof, overlap, wall structures From wood or concrete.

Those plans to build a bath, not without reason, it is believed that the foil film will reliably save the mineral wet insulation from wetting and help support high temperature indoors due to the reflection of thermal radiation. Along with the classic scheme "Insulation + vaporizolation barrier" today used ready-made non-combustible heat insulating mats With a foil-posed surface.

Correctly reflective vaporizoation

Before laying vaporizolation, it is necessary to competently prepare the surfaces of the structures. The preparation technology depends on the material from which walls, gender, ceiling or roof are made. Also taken into account, what works are carried out at the facility - construction or repair:

1. When erecting a wooden house, all elements of wood structures should be treated against rotting, damage to pests and ignition.
2. In the course repair work Pre-perform dismantling finishes, clean the surfaces, while:
   • wooden designs are treated with antiseptic and flame.
   • concrete and block structures are treated with an antiseptic if they are reckled and there is a risk of mold appearance, as well as in wet rooms.

Due to the incorrect preparation of wall structures, overlapping, or a rafter system can eventually come into disrepair or to become a source of a rift of fungus capable of provoking allergies, an asthma attack, aggravation of respiratory diseases.

How to lay vapor insulation on the ceiling

Installation of a vapor insulating layer on the ceiling is required when heating is flat or single Roof in the house without a attic, with the thermal insulation of the basement, as well as residential premises over which is located cold attic. It is also insulating and steam insulated ceiling in the bath. Before laying vaporizion on the roof from concrete slabon reinforced concrete or wooden overlap From the inside, the design surface should be prepared.

The canvas from the film or the pseudodiffusion membrane must be solid so that there are no joints through which the moisture can penetrate the insulation. If width rolled material Lacks, the bands will have to be allowed to be kept together. The recommended leaflet is from 10 to 20 cm, while the joints on both sides are neatly sampled by reinforced construction tape.

Fastening vaporizolation membrane The canvas from the foil film are stacked without an adhesion - jack, and the seam is punctured by aluminum scotch.

If the base of the roof or overlap is wooden designFirst, it is required to put the waterproofing membrane (solid canvas) and attach it to the base (you can use vapor barrier material).

Then, the heat insulator is placed in the form of mats or rolled material from mineral (basalt) wool between the lags of the overlap or rafters. After that, you can retain vapor insulation on the ceiling. If the thickness of the thermal insulator corresponds to the thickness of the lag, you should navigate the counterclaim from the plants to create a ventilation gap.

Putting vaporizion on the ceiling should be so that the canvas around the perimeter goes to the walls and that all the angles are closed. The joints of the canvases should have to the lags of overlappings - this will reliably fix them. To qualitatively lay vaporizolation on the ceiling, follow the tension of the canvas, it should not be saved.

Laying on the ceiling

We will also consider how to lay vaporizoation on concrete overlap. To inside insulate the ceiling or flat roofmade from concrete slab, it is required to attach to it waterproofing (vapor barrier film) with the help of self-adhesive tape, and then mount the crate of bars or metal profile.

The correct height of the cage should be seamless, taking into account the thickness of the insulation and the ventilation gap, the installation step is 1-2 cm less than the width of the insulation, so that mats from insulation materials are in the cells of the Merze. How to mount vaporizolation to the crate will be described in detail below.

How to lay vapor insulation on the floor

Installation of a vaporizolation membrane on the floor by technology is similar to how vapor barrier is performed for the walls and the ceiling. After preparing the base of the wooden floor when warming on lags, before laying vapor barrier to the floor, a waterproofing carpet is mounted, which should be lagged. Then the thermal insulator is inserted between the lags. mineral wool. After that, the laying of vaporizolation is performed, while it is important to know how to properly drain the film.

The nestrest of the rolled material should be at least 10 cm, while on each side of the joint is glued with scotch. The resulting canvas are fixed in such a way that the adhesions lie on the lags of the floor, and throughout the perimeter, evenly stretched canvas came to the walls by 5-10 cm.

Insulated floor with air gap

Before laying vaporizoation to the concrete floor, you need to install the crate, between the elements of which the Muspiece will go to the waterproofing and insulation. Further, work is carried out according to the standard scheme.

Fastening principles

If insulating concrete structures or wooden walls, It is necessary to install a lattice from bars. To the resulting crate, to the ceiling or slinge system Film is convenient to attach with the help of brackets and construction stapler. You can also fix the vapor barrier material with nails with wide hats or linings under the Hats. It is advisable to use galvanized nails - they do not rust. The concrete structures of the film and the membrane are put with a special connective tape.

Fall when installing vaporizolation

To properly mount vaporizolation, the web should be accurately stretched, and the fastening elements are located with a small step - no more than 30 cm. Mounting rules are prescribed carefully to attract the canvases around the perimeter - it is steel and fixed to eliminate the possibility of moisture penetration into the insulation.

Before performing the fixation of vaporizolation, make sure the canvas are located in the right side To thermal insulation.

Which side to install vapor insulation material

Consider which side to the insulation the film or membrane is stacked:

• polyethylene film (simple or reinforced) can be attached to any party - this does not affect the functionality of the barrier;
• the foil film is placed brilliant side towards the room so that the barrier reflects heat;
• the anti-condensate film is fixed by the processed side to structures, fabric to the room;
• the membrane must be addressed by a smooth side to heat insulating material, and scabbing towards the room.

The rule laying a vapor barrier to insulation if front side The membrane looks like an invalid, and it is difficult to determine how to put the material correctly, you can conduct an experiment. A small piece of membranes cover the bowl with boiling water - which side will appear condensate, that side and waterproof, it must be addressed to the insulation.

It is important to know which side to lay vapor barrier to the insulation, if the membrane is used to mount the waterproofing barrier - facial or irons. Heat insulating "Pie" when internal insulation It is mounted in such a way that on both sides to the insulation, the smooth side of the membrane was drawn. That is, the grungy layer of vaporizolation should be facing the room, and when installing the waterproofing carpet - in the direction of the structure that is insulated.

FEATURES OF MONTAGE

It is important not only to correctly lay vaporizolation, but also to ensure the ventilation gap between the steamproof layer and the construction of the construction under finish finishFor which the crates are stuffed. Moisture, settling on the rough side of laid vapor insulating canvases, will evaporate naturally without damaging the finish.

Watery roof circuit with ventilation gap

If vaporizolation is installed correctly, the insulation is reliably protected from moisture. Not half of the problems associated with the freezing and damage to the structures are associated with the shortcomings in the installation of the Parobarmer.

Which side to lay paosolation to the insulation, how to fix

Which side correctly lay thermal insulation material to the insulation. A varieties of vapor barrier films with stages of work on the roof, ceiling and floor.

Which side to lay vaporizoation to the insulation. Types of vapor insulation materials. Installation of vaporizolation

Very often there is a need for insulation of rooms from the inside. If work is planned to produce with your own hands, many questions immediately arise about how to do it right. And one of them concerns the need to use vaporizolizing films and their places in the heat-insulating "pie".

Reply immediately: vaporizolation is necessary in the case of using any moist-absorbing types of insulation. Read more further.

Why do you need a vapor barrier

Installed from the inside of the insulation, even with the presence of external cladding, contact with the warm air of the room, in which the water vapor is always contained. But under certain conditions, they are moving from a vapor state into liquid, that is, in water drops.

What kind of conditions is it?

• Excessive air concentration for this air. The higher the temperature, the large quantity Water pair of air keeps in itself.
• Lowering air temperature.

If the concentration of water vapor and the temperature indoors and beyond equal, the vaporizolation is not needed - the pair will not turn into water. But as soon as these parameters inside the room become higher, the couples seek to outward through any obstacles.

As you understand, in our climatic conditions This happens throughout heating seasonwhich lasts more than six months. It is also clear that the coldest in the house are surfaces in contact with outside air: walls, overlap over not heated basements, ceilings on last floors etc. That is why they are instep.

Device of heat and vaporizolation of walls

In the absence of a parobac parrier, steam penetrates the thermal insulation layer adjacent to cold walls or other designs, it is condensed, turning into a drop of water and moisturizing the insulation.

As a result, the thermal insulation properties of the material are reduced, it begins to make its functions worse. And if the water does not have time to evaporate, then more serious problems are possible: damage in contact with the insulation of structural elements, the appearance of mold.

If vaporizolation under the insulation is laid, it becomes an impassable (or partially passable) obstacle to steam. It remains in the warm room, without cooleding and remaining in a gaseous state.

Therefore, the device internal heat insulation Definitely requires the installation of a vapor barrier between the insulation and the warm air of the room.

It doesn't matter that you insulate: walls in the room, ceiling, floors or roof. Without high-quality vaporizolation, you will not achieve the desired effect and can even harm the microclimate indoors.

Types of vapor insulation materials

• Film

Insulation isolon - multifunctional material).

Attention! Since reliable vaporizolation does not allow water vapors from the room through the insulation and the walls, it is necessary to ensure good forced or natural ventilation. Its absence can lead to an excessive increase in air humidity and, as a result, to a violation of a comfortable microclimate and damage to the finish.

Rules of the device of vaporizolation

It would seem that nothing complicated: fix the film on top of the insulation and vapor barrier is ready (read also the article Healler insulation - new time technology). However, there are some nuances in this case, which you need to know.

Types of vapor insulation materials

Among those presented by construction market Materials for vapor insulation can be distinguished by three main types:

• Film. Refers to the type of deaf countryarries, which are absolutely non-transmitting water pairs contained in the air. The main advantage is low price.

In addition to the usual polyethylene film, special, parocondensate are also available. They are two-layer, with a smooth inner and rough outer face. Condensate drops are held with a rough surface and evaporate, and do not flow down.

Parosolation membrane

• Reflective (Energy Saving) Film. It has a metallized outer layer, resistant to high temperatures and reflecting most of infrared radiation.

This material is most often used in baths and saunas.

Installation of vaporizolation

Of all the above, we can conclude that the vapor barrier material is attached over the insulation from the side of the room. But it is very important to take into account two more points: what side to the insulation is stacked by vaporizolation and what the features of its installation are stacked.

Here and you need to look at the type of film used.

• The usual polyethylene film is placed by any side. However, they do not differ from each other.
• Parokonensate film is stacked by smooth inner side On the insulation, and the parrot face looks out.
• In the same way, diffusion membranes are mounted with a smooth side to the insulation.
• Energy-saving vapor barrier materials are attached to the foil side outward, since it is precisely it reflects the heat penetrating to it back.

Note! It should be remembered that laying of deaf playproof materials requires a device of a ventilated gap.

The fact is that with excessive air humidity, the deaf parobes contribute to the creation of a greenhouse effect. If the inner lining is installed without a gap, close to vapor barrier, then it will be constantly subjected to the harmful effect of moisture deposited on the film. If there is such a gap, the air movement in it will contribute to the evaporation of condensate.

Loggia insulation using vapor insulation membrane - Ventilated clearance is not required

Which side to lay paosoolence to the insulation: video instructions on installation with their own hands, photo and price

Which side to lay paosoolence to the insulation: video instructions on installation with their own hands, photo and price

Which side you need to lay paosoolence to insulation

In the process of thermal insulation of buildings, it is necessary not to simply lay the insulation, but to create a whole "pie" consisting of layers performing various functions. To protect the insulation materials and the structure itself, a film or a special membrane is used to penetrate the steam and condensate. So that she worked, it is important to know which side to lay insulation to the insulation used. Wrong installation will reduce all efforts to heat insulation, allowing the wetting of the insulation. In addition, humidity will negatively affect the material constructive elements building.

Purpose of vaporizolation

A significant effect on the state of the structural elements of the roof, walls, the floor has steam and condensate. Excess moisture contributes to the growth of fungi and mold, causes corrosion of metal and rotting wooden details. Wester insulation, especially mineral wool, dramatically reduces its insulating properties, allowing cold penetration. The carrier of vaporizolation serves as a protective barrier that does not miss a wet couple inside the "cake", but without preventing it outwards.

The appearance of condensate provokes the temperature difference in heated room and on a cold street. Couple striving to leave the building, cooled and turns into a drop of water. A vapor barrier film established by the right side does not make moisture to get to the insulation. Condensate flows over the surface of the web, not falling on the structural elements, or dries on it. Some products designed to protect against steam do not require choose which side to rotate to the insulation. These universal films are especially convenient for beginner builders.

Types of vapor insulation materials

A wide range of vapor insulation materials allows you to choose a cloth for any site of the building. As a special protection used:

Mounting rules for vaporizolation film

To determine which side you need to rotate the web to the insulation, it is often enough to read the manufacturer's instruction. If there is no instructions in it, then choose correctly needide The texture of the product will help. A smooth side of vaporizolation is placed on the insulation, it provides a dense fit, and the lumpy serves to deset the steam. Diffuse membrane manufacturers always give detailed indication By their use, and the outdoor part is painted in a brighter color.

The release of vapor insulation products in rolls facilitates installation and allows you to perform it in short time. Standard width Cloths are 1.5 meters, and the length is 50,100 meters. To calculate required amount Material, find the total area of \u200b\u200bthe insulated surface, and then add 15% for overweights and trimming. The mounting method is selected depending on the material used, the polyethylene film is better fixed with wooden straps in which the brackets are clogged. This will eliminate the likelihood of polyethylene damage.

For fastening the paosity of vaporizolation conveniently use stapler

Installation of walls on the wall is always being uploaded. In complex places - corners, protrusions, slopes, the tightness of the fitness of the material is ensured by schoteching. To work, you will need a set of simple tools:

• construction knife;
• roulette and pencil;
• scissors;
• stapler with brackets or hammer and galvanized nails.

Installation on the ceiling

Due to the rise of heated air, including couples, the ceiling turns out to be one of the most vulnerable places of the room. Effective option For its protection - a special membrane. Such canvas are offered two types:

• one-sided - no need to choose how to properly install isolation relative to the insulation;
• a double-sided membrane must be mounted as indicated in the instructions.

Such material does not require leaving the gap for ventilation, eliminating the need to create a counterclaim. The costs of installation will decrease, and the ceilings height will change slightly. The membranes are strong enough, for their mounting it is necessary to use small nails or a construction staple brand.

Variazolation must be installed after laying insulation. The canvas should not stretch much, because during operation it is compressed and stretched with a change in temperature. Excessive tension can lead to a rupture, especially this is relevant for products installed in unheated room. Large savory is also not needed, enough 1-2 cm. Eliminate material, part of it is cutting onto the walls to dock with their vapor barrier.

Isolate roof from steam

When installing the parobacker for the insulation of the roof, you can use the film material of two layers of polyethylene reinforced in the middle metal mesh. It will also become good waterproofing. Installing the film requires to leave the air clearance of at least 5 cm, so there should be free space between the insulation and the edge of the rafter. If the angle of slope is less than the norm, it is worth applying a film on adhesive basis. This will greatly facilitate installation, increase the tightness of complex joints. For reinforced concrete floors, liquid bitumen mastic is used as vaporizolation.

Special vapor insulation films or membranes are used to protect wooden structures

Work with insulated facades

Placing a vapor insulation product from the outside of the walls has its own nuances. They are caused by shift temperature modes, Presence of precipitation, wind load. Tell me how to lay vapor barrier for facades. The cloth fits tightly to the insulation (if necessary on both sides), a gap for ventilation is left between it and lining. Material must be carefully fixed so that the wind does not blown it. The membrane is usually used, in which it does not matter which side it is laid on the insulation. Horizontal and vertical bands enter each other at least 10 cm, it will provide tightness of the joints. The bonding of the boutique-based ribbon based on the butyl rubber provides high compound strength. Condensate removal flowing through a vapor barrier film is carried out through drain holes At the bottom of the wall.

Installing a film on insulated floor

With vaporizolation of the insulation of the floor, placed between lags, the strip of material is stretched across wooden lags. The mount is performed by brackets. The places of adjoining the wall and the alternates of the adjacent panels are sealed with double-sided adhesive tape. Couples from the room penetrates from above, so the film is stacked with a rough side up.

Features of the reflecting vaporizolation

Polls with a layer aluminum foil We are needed in rooms that require maximum heat conservation. When they are installed, the reflective layer is always sent to the room. Between insulation I. finishing The gap is left, it will strengthen the foil action and eliminate damage to the condensate arising. Neighboring canvases are set to jack and are sampled with a special metallized scotch. If the tightness of the surface of the product is violated during the mount, the hole is sealed with scotch.

Which side to the insulation to lay vaporizoation

How to properly lay steam barrier to protect the ceiling, roof, walls, floor. What material is better to use and which side it needs to be laid to the insulation.

The arrangement of any insulation includes the installation of a vapor barrier. It is necessary for all types of materials and is used in any part of the structure.

The need to isolation from steam

The main function that the vapor barrier performs is to prevent the formation of condensate. As a result of human life, air humidification occurs in the room, and the resulting pa vapor penetrates through interior decoration and insulation.

The heat insulating layer is capable not only to accumulate, but also to hold moisture in its structure. In the cold season, warm steam contacts with cold walls or environmentalWhat causes the formation of condensate. Moisturized material loses its isolation qualities.

If the accumulated moisture does not evaporate, and it is delayed in the material, then there may be consequences in the form of fungus and mold. As a result, such an impact will lead to a damage of heat insulation. It will help to prevent such problems a vapor barrier barrier and ventilation of the room.

Types of materials

Depending on the insulation used, the barrier can be mounted indoors to facing decoration. It is also possible to external execution, but it has its own characteristics.

Vaporizolation is distributed into two types by applying method:

• painting;
• film

Painting products

It can be represented by the following varieties:

• tar;
• tar;
• bitumen.

This type of vapor barrier is applied. It is used mainly on chimney pipes, ventilation nozzles, metal rods. In those places where the laying of other types of insulator is limited.

This is the most common type of vaporizolation. It has a complex multi-layer structure that gives good defense From the penetration of steam. Such products are presented with three types:

• polyethylene;
• polypropylene;
• diffusion membranes.

The polyethylene film does not have sufficient strength, therefore it is released in a multilayer version, or reinforced with a special cloth or grid. A feature of this species is that it completely prevents the passage of steam.

Also, the polyethylene film can be produced with a foil reflective screen that is applied to one side. Such insulation can be laid in rooms with high temperatures and high humidity.

Polypropylene Product

The polypropylene product has high strength. It is a woven base on which a thin layer of polypropylene is applied on both sides. Such a film is resistant to UF-rays. To improve the properties and preventing condensate formation, polypropylene is covered special composition. The antioxidant layer is applied to one side, and it is able to absorb the resulting moisture and quickly evaporate if ventilation is present.

Diffusion membranes can be of two types. Ordinary vaporizolation is made from two components: polypropylene and polymer film. This type has a limited permeability of steam, it is also capable of quickly evaporating moisture. The second option is an energy-saving membrane, it is resistant to high temperatures and is capable of reflecting the power rays. Its feature is a metallized outer layer.

Terms of arrangement

First of all, it is necessary to determine which side will lay material on the insulated layer. For this you need to know the features of various vapor barrier materials.

If there are no designations on the surface, and there is no instruction, then determine which side to be laid, it is possible by some signs:

• a lumpy surface says that it is outdoor, in this case the second inner side is smooth;
• when roll-off roll, the inner side of the vaporizolation will be on the floor;
• if the insulator has different color around, then the darker surface is outer.

Material features

In the case when both surfaces are the same, does not matter which side to lay a vapor barrier. This refers to the usual polyethylene films. If the foil layer is applied on one side, it should be located outside.

Membranes and polypropylene usually have a smooth and rough surface. Put a smooth side need to insulate. If the membrane has a double-sided breathable surface, then there is no difference which side to turn it inside.

Basic requirements when laying

The main rule during work is to maintain the integrity of the vaporizolation layer. The material should not have cuts and cracks. To perform this condition it is necessary:

• sticking bands of the mustache together;
• seams connect with scotch, the width of the tape should be at least 100 mm;
• as a fastener under the brackets to use wooden rails;
• provide a 1-2 cm film sagging.

The execution of these rules will save the heat insulating material from condensate.

Installation

It is carried out after installing the insulation. Maintain work in both vertical and horizontal direction. Installation is carried out in such a sequence.

When working in the vertical direction, the intersection of the bands must be equipped on wooden rafylach. The overlap of the bands should be 10 cm. Less value will lead to a substantial joint. All seams need to be sealing - it is possible to perform it with an adhesive tape. Stripes located horizontally begin to lay on top.

Then secured the joints. For wooden structures, galvanized nails or brackets can be used. Fixation is made by clamping slats in the connecting places. After installing vapor barrier wooden bars. They will continue to be attached to the skin. Bruks will provide a ventilated clearance between film and finishing.

Arrangement of individual seats

Connection of ventilation pipes and roofs. In this place, the film is needed to omit and wind pipeline. Fixing the film to produce with the help of scotch.

Place of openings: for hatches, mansard windows A special apron is used. You can also conduct their arrangement independently, pasteing around the perimeter of the ribbon. For window Operactions You should leave a fold of 20-30 mm. The deformation reserve is performed in case of precipitation.

The arrangement of vapor barrier is a responsible process. A pair of inherent high permeability, so it is necessary to ensure good protection from its penetration. Implemented in all rules insulation will provide long term Services not only insulation, but also at home.

Heating roof or room with thermal insulator (mineral wool, glass gamble, loose foam), able to skip and accumulate moisture, it is necessary to mount a vapor insulation layer. The moisture that fell into thermal insulation significantly worsens its operational properties, increasing the thermal conductivity. In addition, due to the wet environment, wooden structures with which the insulation contacts is quickly starting to be rotated and collapsed. At the stage of preparations for the warming of the roof or at home it is important to understand which side to lay vapor barrier to the insulation - the violation of technology will lead to the fact that steam from the room will penetrate into the thermal insulation layer. The membranes used in construction are divided by vapor permeability to completely impenetrable films and partially permeable (diffusion).

Manufacturers offer vapor insulation membranes of the following types:

• polyethylene film (can be used, insulating roofing or floor, vapor and hydraulic barrier);
• reinforced film from polyethylene (distinguished by increased strength);
• follicated with aluminum film (used for internal insulation, mounted on the reflective side to the room - additionally helps to maintain heat, primarily designed for use in saunas and baths);
• the film with an anti-condensate coating (prevents moisture condensation is intended for installation in the composition of structures with metal elements, prone to corrosion - professional flooring, metal tile, etc., the film treated with the heat insulator is mounted).

Polyethylene reinforced film

If, when insulation of rooms in the house, a completely impenetrable film is used to create a parobacker, it is necessary to provide effective ventilation of premises capable of output excess moisture.
Parosolation films with porous structure differ in diffusion ability. Due to the pore, in the moisture barrier from the insulation, it goes outward, thanks to which the thermal insulator retains its operational properties, and the metal structures in contact with it do not rust, wooden - do not rot. Among the vapor-permeable membranes differ:
Pseudodiffusional. During the day, up to 300 gr / m2 of evaporation are passed.
Diffusion. The number of transmitted evaporation per day is from 300 to 1000 gr / m2.
Superdiffusion. The evaporation rate exceeds 1000 gr / m2.
The vapor barrier film of the first type refers to efficient moisture protection and is used for internal structures (space side). If the pseudodiffusion membrane can be mounted on top of the fibrous thermal insulator on the outer wall, the parobararier will delay moisture in the insulation. For facade insulation, diffusion and superdiffusion membranes are suitable, which simultaneously serve as a windarrier.

Principles of installation of a vapor barrier

Laying vaporizolation is an important stage of work on the insulation of structures with fibrous materials capable of accumulating moisture. Work is carried out in the framework of the repair or reconstruction of the house or at the stage of preparation for finishing a new building. It is necessary to know how to properly fasten the membrane web between themselves to provide a solid layer that protects moisture on the penetration of moisture, how to fix the film to the designs. Before laying a vapor barrier film, it is also necessary to determine which side it is required to be located to the warming material.

Preparatory stage

For the insulation of a block or wooden house, the bath arrangement, thermal insulation materials that need to protect against the accumulation of moisture are used. To this end, on the walls inside the house, on the ceiling or floor, on the inside of the roofing cake, a material that does not transmit evaporation is mounted. Either the diffusion membrane with facade insulation.
At the preparatory stage, you should choose a variant of vaporizolation, taking into account the features of installation and requirements for the characteristics of the film. Popular options include "Izospan" (and its analog megaism) - membrane material with high operational parameters. The manufacturer offers a membrane line with various technical indicators, which allows you to choose a material depending on the purpose - vapor barrier for roof, floors, wall structures of wood or concrete.
Those who plan to build a bath, not without reason, believe that the foil film reliably will save the mineral wet insulation from wetting and will help maintain a high temperature in the room due to the reflection of thermal radiation. Along with the classic scheme "Insulation + vapor barrier" today, ready-made non-combustible heat-insulating mats are used with a foil-plated surface.

Correctly reflective vaporizoation

Before laying vaporizolation, it is necessary to competently prepare the surfaces of the structures. The preparation technology depends on the material from which walls, gender, ceiling or roof are made. It is also taken into account, what works are carried out at the facility - construction or repair:
When erecting a wooden house, all elements of wood structures should be treated against rotting, damage to pests and ignition.
During the repair work, the finishes are pre-performing, surface surfaces, while:
Wooden designs are treated with antiseptic and flame.
Concrete and block structures are treated with an antiseptic if they are reckled and there is a risk of mold appearance, as well as in wet rooms.
Due to the incorrect preparation of wall structures, overlapping, or a rafter system can eventually come into disrepair or to become a source of a rift of fungus capable of provoking allergies, an asthma attack, aggravation of respiratory diseases.

How to lay vapor insulation on the ceiling

Installation of a vapor barrier layer on the ceiling is required when insulating a flat or single-sided roof in a house without a attic, with the heat insulation of the basement, as well as residential premises over which the cold attic is located. It is also insulating and steam insulated ceiling in the bath. Before laying vapor insulation on the roof of the concrete slab, on the reinforced concrete or wooden overlap from the inside, the design surface should be prepared.
The canvas from the film or the pseudodiffusion membrane must be solid so that there are no joints through which the moisture can penetrate the insulation. If the width of the roll material is missing, the bands will have to be allowed to be allowed. The recommended leaflet is from 10 to 20 cm, while the joints on both sides are neatly sampled by reinforced construction tape.

Fastening a vapor insulating membrane

The canvas from the foil film are stacked without an adhesion - jack, and the seam is punctured by aluminum scotch.
If the base of the roof or overlap is a wooden structure, you first need to put a waterproofing membrane (solid canvas) and attach it to the base (you can use vapor barrier material).
Then, the heat insulator is placed in the form of mats or rolled material from mineral (basalt) wool between the lags of the overlap or rafters. After that, you can retain vapor insulation on the ceiling. If the thickness of the thermal insulator corresponds to the thickness of the lag, you should navigate the counterclaim from the plants to create a ventilation gap.
Putting vaporizion on the ceiling should be so that the canvas around the perimeter goes to the walls and that all the angles are closed. The joints of the canvases should have to the lags of overlappings - this will reliably fix them. To qualitatively to put vapor barrier on the ceiling, follow the tension of the web, it should not be saved.

Laying on the ceiling

Also consider how to lay vapor barrier to concrete overlap. To inside the ceiling or a flat roof, made of concrete slabs, it is necessary to attach a waterproofing coating (vapor insulation film) with a self-adhesive tape, and then mount the crate of bars or a metal profile.
The correct height of the cage should be seamless, taking into account the thickness of the insulation and the ventilation gap, the installation step is 1-2 cm less than the width of the insulation, so that mats from insulation materials are in the cells of the Merze. How to mount vaporizolation to the crate will be described in detail below.

How to lay vapor insulation on the floor

Installation of a vaporizolation membrane on the floor by technology is similar to how vapor barrier is performed for the walls and the ceiling. After preparing the base of the wooden floor when warming on lags, before laying vapor barrier to the floor, a waterproofing carpet is mounted, which should be lagged. Then the heat insulator made of mineral wool is inserted between the lags. After that, the laying of vaporizolation is performed, while it is important to know how to properly drain the film.
The nestrest of the rolled material should be at least 10 cm, while on each side of the joint is glued with scotch. The resulting canvas are fixed in such a way that the adhesions lie on the lags of the floor, and throughout the perimeter, evenly stretched canvas came to the walls by 5-10 cm.

Insulated floor with air gap

Before laying vaporizoation to the concrete floor, you need to install the crate, between the elements of which the Muspiece will go to the waterproofing and insulation. Further, work is carried out according to the standard scheme.

Fastening principles

If concrete structures or wooden walls are insulated, you need to install a fragment from bars. To the resulting crate, to the ceiling or rafter system, the film is conveniently attached using a bracket and a construction stapler. You can also fix the vapor barrier material with nails with wide hats or linings under the Hats. It is advisable to use galvanized nails - they do not rust. The concrete structures of the film and the membrane are put with a special connective tape.

Fall when installing vaporizolation

To properly mount vaporizolation, the web should be accurately stretched, and the fastening elements are located with a small step - no more than 30 cm. Mounting rules are prescribed carefully to attract the canvases around the perimeter - it is steel and fixed to eliminate the possibility of moisture penetration into the insulation.
Before performing the fixation of vapor barrier, make sure that the canvas is located the right side to the heat insulation.
Which side to install vapor insulation material

Consider which side to the insulation the film or membrane is stacked:

• polyethylene film (simple or reinforced) can be attached to any party - this does not affect the functionality of the barrier;
• the foil film is placed brilliant side towards the room so that the barrier reflects heat;
• the anti-condensate film is fixed by the processed side to structures, fabric to the room;
• the membrane should be addressed by a smooth side to the thermal insulation material, and Schellow towards the room.

The rule of laying vaporizoation to insulation

If the front side of the membrane looks like an invalid, and it is difficult to determine how to put the material correctly, you can conduct an experiment. A small piece of membranes cover the bowl with boiling water - which side will appear condensate, that side and waterproof, it must be addressed to the insulation.
It is important to know which side to lay vapor barrier to the insulation, if the membrane is used to mount the waterproofing barrier - facial or irons. The heat insulation "pie" with internal insulation is mounted in such a way that the smooth side of the membrane is facing on both sides to the insulation. That is, the grungy layer of vaporizolation should be facing the room, and when installing the waterproofing carpet - in the direction of the structure that is insulated.

FEATURES OF MONTAGE

It is important not only to properly lay vaporizolation, but also ensure the ventilation gap between the steamproof layer and the trimming of the structure under the finishing finish, for which the cubs are stuffed. Moisture, settling on the rough side of laid vapor insulating canvases, will evaporate naturally without damaging the finish.
If vaporizolation is installed correctly, the insulation is reliably protected from moisture. Not half of the problems associated with the freezing and damage to the structures are associated with the shortcomings in the installation of the Parobarmer.

On this article, the total illiteracy of both the builders and by buyers, as well as increasingly flashed in the commercial proposals of the phrase according to the "Parohydro isolation" or "hydrotreating" - because of which the whole whistling, lost money begins, Problem structures, etc.

So, you probably heard about the waterproof, windproof and vaporizolation - that is, about the films that are put in insulated roofs and frame walls for their protection. But then, often the full "pair-type" begins.

I will try to write very simple and accessible, not immersed in formulas and physics. The main thing is to understand the principles.

Paro or Hydro?

Let's start with the fact that the main mistake is mixed into one concept of steam and moisture. Couples and moisture are completely different things!

Formally, couples and moisture are water, but in different aggregate states, respectively, having a different set of properties.

Water, it is moisture, it is "Hydra" (Hydro from Dr. Greek. ὝΔωρ "Water") is what we see eyes and can feel. Water from under the tap, rain, river, dew, condensate. In other words, this is a liquid. It is in this state that the term "water" is usually used.

Couples is a gaseous water condition, water dissolved in the air .

When an ordinary person speaks about couples, for some reason he thinks that this is necessarily something visible and tangible. Couples from the kettle's nose, in the bath, in the bathroom, etc. But actually it is not.

Couple is present in the air always and everywhere. Even now, when you read this article, steam is in the air around you. He underlies the very humidity of the air, about which you probably heard and complained more than once that the humidity is too high or too low. Although no one saw this moisture through the eyes.

In a situation where there is no couple in the air - a person will not live for a long time.

Taking advantage of the different physical properties of water in a liquid and gaseous state, science and industry received The ability to create materials that pass steam, but do not pass water.

That is, this is a certain sieve that is capable of missing steam, but will not miss the water in a liquid state.

At the same time, especially smart scientists, and then manufacturers, invented how to make a material that will carry water only in one direction. How exactly is done, for us it does not matter. There are few such membranes in the market.

Vapor-permeable membrane - passes couples in both directions, but does not miss moisture

So, a construction film that is impenetrable for water, but passes the pairs of the same in both sides - is called waterproofing paro permeable Membrane. That is, steam she misses freely in both directions, and water (hydra) does not pass at all or only one way.

Paro insulation - This is a material that does not miss anything or couples or water. And at the moment, vaporizolation membranes - That is, materials that have one-sided permeability for steam have not yet come up.

Remember as "Father our" - there is no universal "pair-like membrane". There are vaporizoation and vapor-permeable waterproofing. These are fundamentally different materials - with different purposes. The use of these films is not where you need and not so where you need - can lead to extremely sad consequences for your home!

Formally, the vaporizolation can be called paroysolation, as it does not miss any water or steam. But the use of this term is the way to commit dangerous errors.

Therefore, once again, in frame construction, as well as in insulated roofing, two types of films are used.

1. Paro insulating - who do not miss any couples or water and are not membranes
2. Waterproofing steam permeable Membranes (also called windproof, due to extremely low air permeability or superdiffusion)

These materials have different properties and their use is not intended, practically guaranteed to cause problems with your home.

Why do we need films in the roof or frame wall?

To understand this, you need to add a little theory.

Let me remind you that the task of this article is to explain "on the fingers", which is happening, without deepening into physical processes, partial pressure, molecular physics, etc. So in advance I apologize to those who had five in physics, and immediately make a reservation that in reality all the processes described below are much more complicated and have a lot of nuances. But the main thing is to understand the essence.

So the nature ordered that the couple always goes to the direction from warm to cold. Russia, a cold climate, a medium heating period from us - 210-220 days from 365 per year. If you decide to him days and nights, when it is cold outside in the street than in the house, then more.

Therefore, it can be said that most of the time, the pattern of the steam movement is directed from the inside of the house, outward. It does not matter about what is questionable - walls, roofing or lower overlap. Let's call all these things in one word - enclosing structures

In homogeneous structures, the problem usually does not occur. Because the vapor permeability of a homogeneous wall is equally. Couples calmly go through the wall and goes into the atmosphere. But as soon as we have a multilayer structure, consisting of materials with different vapor permeability, everything becomes no longer so simple.

And, if we talk about the walls, it is not necessary about the frame wall. Any multi-layered wall, at least a brick or aerated concrete with outdoor insulation, will already make it think.

Surely you heard that in a multi-layered structure, the vapor permeability of the layers should increase along the movement of steam.

What will happen then? Couple enters the design and moves in it from the layer in the layer. At the same time, the vapor permeation of each subsequent layer is higher and higher. That is, from everyone subsequent layer, couples will be faster than from previous.

Thus, we do not form an area where the saturation of the steam reaches the value when at a certain temperature can be condensed into the real moisture (dew point).

In this case, we will have no problems. The complexity is that it is not easy to achieve this in a real situation.

Parosolation of the roof and walls. Where is it and why is it needed?

Let's consider another situation. Couple got into the design, moves along the layers outside. The first layer passed, the second ... and then it turned out that the third layer is no longer so parchment as the previous one.

As a result, a couple who fell into the wall or roof does not have time to leave it, and the new "portion" is already backing it back. As a result, in front of the third layer the concentration of steam (more precisely saturation) begins to grow.

Remember what I said before? Couple moves towards warm, cold. Therefore, in the third layer area, when the saturation of the steam will reach the critical value, then at a certain temperature at this point, the pairs will begin to condense into real water. That is, we got a "dew point" inside the wall. For example, on the border of the second and third layer.

That is, it is often observed by people who have a house from the outside of something that has bad vapor permeation, such as plywood or OSP or CSP, and vaporizolation inside or it is made poorly. On the inner side of the outer skin, the condensate rivers flow, and all wet flushing to it.

Caps easily enters the wall or roof and "slipping" insulation, which as a rule has excellent vapor permeation. But then he "rests" into the outer material with poor permeability, and in the end, the dew point is formed inside the wall, right in front of the obstacle on the path of steam.

From this situation there are two exits.

1. For a long time and painfully pick up the materials of the cake so that the dew point is under no circumstances inside the wall. The task is possible, but complicated, given that in reality, the processes are not so simple as I describe now.
2. Put from the inside vaporizolation and make it the most sealed.

It is on the second path and go in the West, they make a hermetic obstacle on the way. After all, if you don't let couples in the wall at all, it will never reach the saturation that will lead to condensate. And then you can not break your head over what materials are used in the "Pie", from the point of view of the vapor permeability of the layers.

In other words - installation of vapor barrier, this is a guarantee of the absence of condensate and dampness inside the wall. At the same time, vaporizolation is always put on the inner, "warm" side of the wall or roof and is made as intended as possible.

Moreover, the most popular material for this "they", the usual polyethylene 200mbron. Which is inexpensive and has the highest piping resistance, after aluminum foil. The foil would be even better, but it's hard to work with it.

In addition, I pay special attention to the word hermetic. In the West, when installing vaporizolation, all the joints of the film are carefully skidded. All holes from the wiring of communications - pipes, wires through vapor barrier, are also thoroughly playful. Popular in Russia Installation of vaporizolation of Vangest, without sizing joints, can give insufficient tightness and as a result, you will get the same condensate.

Unfigured joints and other potential holes in vapor barrier, may cause a wet wall or roof, even if vaporizolation itself is.

I want to also note that the mode of operation of the house is important. Summer country houses, in which you are less regularly only from May to September, and maybe several times in the off-season, and the rest of the time the house is without heating, they can forgive some of the flaws of vaporizolation.

But a house for permanent residence, with constant heating - errors does not forgive. The more the difference between the outdoor "minus" and the inner "plus" in the house - the more the couple will enter out the exterior designs. Moreover, the likelihood of condensate inside these structures. Moreover, the amount of condensate as a result can be calculated by tens of liters.

Why do I need a waterproofing or superdiffusion vapor-permeable membrane?

I hope you understand why make vaporizolation from the inner wall - in order to not let couples inside the structures at all and prevent the conditions for its condensation in moisture. But the question arises, and where and why put the paro permeable The membrane and why it is impossible instead of it as well, to put vaporizolation.

Windproof, waterproofing membrane for walls

In the American wall design, the vapor-permeable membrane is always placed outside, over the OSP. Its main task is oddly enough, it is not protecting the insulation, but the protection of the OSP itself. The fact is that the Americans make vinyl siding and other facade materials at once on top of the plates, without any amp of gaps or craters.

Naturally, with this approach, there is a possibility of entering outdoor atmospheric moisture, between siding and stove. As is the second question, a strong oblique rain, construction of construction in the area of \u200b\u200bwindow openings, belel adjoining, etc.

If the water falls between siding and OSP, it can dry it there for a long time and the stove can start rotting. And the OSP in this place the material is frowning. If I started to rot, this process develops very quickly and goes deep into the slab, destroying it from the inside.

It is for this that, first of all, a membrane with single-beam permeats for water is put. The membrane will not give water with a possible leakage, go to the wall. But if some way, the water fell under the film, due to one-sided penetration, it can get out.

Super Diffusional Waterproofing Membrane for Roofing

Let you not confuse the word superdiffusion. In fact, it is the same as in the previous case. The word superdiffusion means only the fact that the film is very well missing pairs (pair diffusion)

In the scope roof, for example, under metal tile, there are usually no plates, so the vapor-permeable membrane protects the insulation from both possible leaks outside and from blowing the wind. By the way, therefore, such membranes are also called windproof.That is, a vapor-permeable waterproofing membrane and windproof membrane - as a rule, the same thing.

In the roof, the membrane is also placed on the outside, in front of the vessel.

In addition, pay attention to the instructions for the membrane. Since some membranes put close to insulation, and some, with a gap.

Why it is necessary to put the membrane outside, and not vaporizolation

But why not put vaporizolation? And make an absolutely playproof wall on both sides? Theoretically, this is possible. But practically, to achieve the absolute tightness of vaporizolation is not so simple - all the same somewhere there will be damage from fasteners, the flaws of construction.

That is, some kind of meager number of steam, it will still fall into the walls. If you have a vapor-permeable membrane outside outside - then this meager has a chance to get out of the wall. But if vaporizolation, it will remain for a long time and sooner or later, it will reach a saturated state and again the dew point will appear inside the wall.

So - the windproof or waterproofing vapor-permeable membrane is always installed outside. That is, with the "cold" side of the wall or roof. If there are no plates or other structural materials outside, the membrane is put on top of the insulation. Otherwise, in the walls, it is put on top of the enclosing materials, but under the facade finish.

By the way, it is worth mentioning another detail, for which films are used, and the wall or roof is made as sealed as possible. Because the best insulation is air. But only if it is absolutely immobile. The task of all insulation, whether it is a foam or minvat, to ensure air immobility within itself. Therefore, the lower the density of the insulation, as a rule, above its heat resistance - the material contains more fixed air and less material.

The use of films from both sides of the wall reduces the likelihood of blowing the insulation by the wind or convection movements of the air inside insulation. Thus, forcing the insulation to work as efficiently as possible.

What is the danger of the term Parohydrozolation?

The danger is that under this term, as a rule, two materials are mixed with different purposes and with different characteristics.

As a result, confusion begins. Parosolation can put on both sides. But the most common option of error, especially in the roofing and the most terrible in consequences, when the result is the opposite - steam barrier is installed outside, and the vapor-permeable membrane from the inside. That is, we calmly skip the pairs into the design, in unlimited quantities, but we do not let it go. This is where the situation appears on a popular video.

Conclusion: Never mix the concepts of vapor-permeable waterproofing membranes and vaporizolation - this is the right road to building errors having very difficult consequences.

How to avoid mistakes with films in the wall or roof?

The fear of the eyes are great, in fact, with films in the wall or roof everything is quite simple. The main thing to remember to comply with the following rules:

1. In the conditions of a cold climate (most of Russia), vaporizolation is always put only with the inner, "warm", side - whether it is a roof or wall
2. Parosolation is always made as intended as possible - joints, holes of the interchanges of communications, skill with scotch. At the same time, special adhesive tape is often required (as a rule with butyl rubber adhesive base), as a simple can be discarded with time.
3. The most efficient and cheap vaporizoation is a polyethylene film 200 mk. It is desirable "primary" - transparent, it is easiest to smoke the joints with ordinary bilateral scotch. The purchase of "branded" vaporizolations is usually unjustified.
4. Parry-permeable membranes (superdiffusion, windproof) are always put with the outer, cold side of the structure.
5. Before you put the membrane, pay attention to the instructions for it, since some types of membranes are recommended to be put on the clearance from the material to which it fit.
6. The instructions can be found on the manufacturer's website or on the roll of the film itself
7. Usually, in order to avoid errors with the "Which side" to mount the film, the manufacturers turn the roll so that "roll over" it outside By design, you automatically installed the right side. With other use options, before starting installation, consider which side of the material.
8. Choosing a vapor-permeable membrane, it is worth a preference to high-quality "first and second echelon" manufacturers - Tyvek, Tekton, Delta, Corotop, Juta, Eltete, etc. As a rule, these are European and American brands. The membranes of manufacturers of the "Third Echelon" - isospan, nano-insole, megaism and other "isola", "brains", etc. As a rule, heavily inferior in quality, and most of them generally have an unknown Chinese origin with a stamping brand of a trading company on the film.

about the author

Hello. My name is Alexey, perhaps you met me as Porcupine or Gribnick on the Internet. I am the founder of the Finnish house, a project that has grew up from a personal blog to a construction company, the purpose of which is to build a high-quality and comfortable home for you and your children.