How to properly install roof aerators. Roofing aerator, what is it? Prices for various types of ridge aerators

In order for a long-term and, no less important, safe operation of a soft roof, you need to take care of a competent ventilation device under the roof. The lack of ventilation of the space under the roof is fraught with a lot of troubles - from leaks, the smell of dampness to the very rapid destruction of the roof covering material, which, believe me, is quite expensive. Installation of aerators on soft roof- one of the important elements, but not used by everyone. We want to show the need for its device.

The problem can be solved by installing aerators on a soft roof. The air circulating through these artificial ventilation ducts prevents the accumulation of condensate, respectively, protects the wooden elements from decay, mold formation, dries out the insulation layer of the roofing pie, and more.

Thus, the presence of ventilation aerators for a soft roof protects it from damage, guarantees comfortable living in the house.

Why does moisture condense under the roof

Even the presence of vapor barrier and waterproofing in the composition of the roof pie cannot completely block the access of wet vapors, human waste products, from residential premises.

When warm vapor comes into contact with a colder surface, then, as is known from the course of physics, it begins to condense, forming tiny drops of water. They settle on various materials and structures (rafters, insulation, etc.) and impregnate them.

Moisture can get into the roof space and outside. The warm air accumulated in the attic warms the roof from the inside, which is why the snow cover on the roof begins to melt in winter. As the temperature drops, frost forms in places. Under appropriate conditions, it also melts. Through the joints roofing material water gets inside and the roof thus starts to leak.

The roof covering also suffers. When the temperature drops, the moisture that has penetrated into the formed microcracks can destroy the material. As a result, microcracks become visible, possibly even through.

On a soft roof, the following defects are most common, caused by excess moisture in the drink:

bubbles on the surface. As a rule, the top layer in the pie of such a roof is waterproofing, and the bottom layer is vapor barrier. In fact, they form a closed airtight circuit.
In hot weather, the temperature of the roofing cake can reach as much as 100 °. Under such conditions, the water accumulated in the circuit turns into steam, ready to evaporate. This can cause swelling on the surface or destruction of the roof.
The efficiency of the heater decreases. Wet thermal insulation loses its effectiveness: wetting by two percent increases the thermal conductivity of the insulation by forty percent. As a result, the roof begins to retain heat much worse. Accordingly, the cost of heating increases.
Covers collapse. The structure of cement-sand compositions, from which they are usually made, is capillary-porous. As soon as the temperature drops, the water that gets into these pores crystallizes. Having increased in volume, it presses against the pores with greater force from the inside. As a result, they are destroyed.

What is the essence of roof aeration

Excess moisture from under the roof is removed by evaporation, which is made possible by the movement of air currents. The pressure readings inside the house and outside are very different, so the air will begin to circulate as soon as the two environments are communicated.

Creating effective ventilation for a cold attic is quite simple. It is enough to limit yourself to a dormer window, cracks in the area of \u200b\u200bthe ridge or a loose fit of the overhangs of the eaves.

In the case of a warm attic or attic, such a solution is unacceptable, since in the cold season unregulated ventilation will cause a decrease in the temperature in the rooms.

The best option for them are roofing aerators for soft roofs (photo below), through which the spaces under and above the roof are connected. In the passage pipe of the flexible tile aerator, a forced draft is formed, caused by the pressure difference, which helps to draw wet vapors out.

shingle aerator

In order for the ventilation of the soft roof roof to function normally, an air supply from the outside is necessary. They enter through the ventilation gaps (air vents) provided on the cornices. The air that comes in from the street heats up in the process of passing through a warm attic, then rushes up - directly to the roof. Draft formed in the aerator on the roof , brings the air flow through the passage pipe and throws it out.

On a note

Ridge aerator for soft roofs correct installation in one hour, it passes the air twice through the eaves on the cornices and the layers of the roofing cake, drying and ventilating it.

Installing aerators on a soft roof in the required quantity ensures dryness of both the roof covering and the insulation. It is noteworthy that the ventilation of the soft roof through the roof aerator will be able to prevent the accumulation of moisture under the new roof, as well as to dry the old cake, which has already been saturated with moisture.

Types of aerators

There are three types of ventilation units roof space:

Continuous are mostly mounted on a ridge. The model must be placed along the entire length of the junction of the slopes. Externally, the design looks like a corner element with holes. Open cavities are protected by barriers that prevent precipitation, dust and insects from entering under the roof.

Point aerators are located in separate places on the roof, where moisture and steam are most needed. Most often these are slopes, less often - a skate. They are installed in a certain order. Each such design is nothing more than a ventilation pipe with a protective cap. Usually the latter has the form of a "box" or "fungus".

On a note

The point pitched structure is connected to the roof by means of a flat base, the ridge one has an angular base, through which it mates with the roof near the roofing rib.

Turbine - the most powerful: they extract moisture from both the roofing pie and from the premises of the house. To extract moist air, the device is equipped with an electric drive. Models of this type are selected taking into account the slope of the slope. It should also be noted that they are not suitable for installation on slopes with a large angle of inclination.

It is important to note that each type of roof covering requires an aerator made of a specific material. Let's look at a few examples. Let's start with shingles.

The under-roof space aerator in this case is made of polypropylene, which is highly impact-resistant. In addition, it successfully resists temperature extremes, exposure to ultraviolet radiation, and corrosion. As a rule, the joints of the plates or the highest elevation of the slope are chosen as installation sites.

For metal tiles. The aerator is made from metals that are resistant to various aggressive influences, including corrosion. Installed on almost any part of the roof.
For profile. The installations are made of the same material as in the previous case, only it needs to be installed closer to the ridge.

Design features suggest significant differences in the approach to installing aerators on a soft roof.

Installation of aerators on a soft roof step by step

Recall what an aerator is (see photo). This is an artificial ventilation duct that works both to extract moisture out from under the roof and to circulate air.

Consider, separately, how each type of aerator, ridge and point, is mounted.

The device of the ridge version is extremely simple. It is suitable for roofs with an angle of inclination ranging from 12 to 45°.

On both sides of the ridge or on its top, a groove is cut for ventilation with a thickness of 30–80 mm. The choice of a specific thickness is initially determined by the manufacturer. To work with a solid base, use a circular saw.
The slots should end without reaching the edge of the ridge by 300 mm, and not violate the integrity of the slopes on both sides.
On the solid sections remaining along the edges of the ridge, ridge tiles are applied.
Then a ridge aerator is applied. All its segments are fixed on elongated roofing nails or on screws that are screwed through the ready-made holes on the part. The segments themselves are attached similarly to the details of the designer.
On the finished structure lay ridge tiles. The principle of installation differs little from the usual method: the difference is only in the fastening elements. These should be elongated fasteners.
The tightness of the structure ensures silicone sealant, which close up its ends.

The video plot details the nuances of the process of installing aerators on a soft roof.

Scheme of the device for spot ventilation of a soft roof

The mounting scheme for the point version is somewhat more complicated:

As you know, a soft roof is laid on a continuous crate of plywood or OSB. A hole is cut out in it, deepened to the heat-insulating layer. Its diameter must exactly correspond to the dimensions of the internal opening of the channel of the artificial ventilation gap. If the diameter is smaller, then dents will begin to form on the surface of the roof covering, where moisture or dirt will accumulate, if more, then an additional sealing gasket will be needed.

If for any reason the insulation in this place turned out to be too wet, then it must be completely or partially replaced. Thus, it will be possible to maintain the thermal conductivity of the heat insulator at the proper level.

For marking, the skirt is placed on the crate, the contours of the ventilation duct opening are circled with a pencil or a nail, and a hole is cut out along the resulting contour with a jigsaw.
An aerator skirt is placed on top of it, which is fixed with at least 6 roofing nails or screws.

On the recommendation of some manufacturers, in addition to fasteners, bituminous mastic is additionally used to increase adhesion. With this approach, sealant is first applied to the back of the tube base and tightly glued to the slope, after which fasteners are used.

A protective frame is put on the skirt and screwed with self-tapping screws. After that, they mount a cap that protects the roof pie from the penetration of precipitation, snap it in and fasten it to self-tapping screws.
The docking point is sealed and an additional layer of waterproofing is necessarily applied.
Similarly, the installation of the remaining point models (according to calculations) is carried out, which form a single ventilation system.
Tiles are laid on top of the skirt, cutting the petals along the junction line.

When installing aerators, the size and shape of the roof, the state of the vapor barrier, and the degree of air humidity are taken into account.
The installation of aerators for a flat roof with a simple configuration is recommended at the rate of 1 fungus / 100 sq. m of roof surface. However, they should be separated from each other by no more than 12 m.
If the roof structure has valleys or a clearly defined ridge, artificial ventilation ducts are located in the watershed areas.
The calculation of ventilated installation systems for buildings with a high level of humidity is best entrusted to construction design companies.
Professionals recommend completing aerating systems from the same supplier. In this way, the risk of problems can be reduced when defective parts are replaced.

The most popular brands of manufacturers of aerators

One of the first models of the family of continuous devices is the ridge. Let's start with him.

Ridge Master Aerators(USA) (Plus and other modification of HipMaster). The shape of the profile design, it is patented) eliminates damage.

Ridge Master models can only be installed on strictly horizontal skates. They are not recommended for use on inclined ribs. For these cases, the Hip Master is suitable. Let's note some advantages of ventilating aerators of this producer.

Special patented system for protection against precipitation and wind. It has a special design of internal partitions, designed on a computer.
The protective frame is soldered by ultrasound.
Built-in interlocking edges allow quick and much more secure joining of structural parts, increase weather resistance, and provide an accurate fit to the slopes.
The aerator successfully resists crushing. It provides support for fasteners, as well as specially designed ribs that keep the roofline even and smooth.
The structure does not form dents, for example, from branches or cracks during sudden changes in temperature, it is resistant to hammer blows.
Manufacturer's warranty - 40 years.

TOkonky aerator for soft roof TechnoNIKOL- completely similar to Ridge Master, but different in length. Ventilation efficiency: approx. 1 element/25 sq.m.

TechnoNIKOL also offers various options point models. Here are some of them.

KTV pitched. They are used exclusively on roofing coverings of their bituminous tiles. They are attached to the roof through the passage element in the process of laying soft tiles. The device is difficult to see on the roof. Ventilation efficiency: approx. 1 element / 5-10 sq.m.
KTV alpha. This is an economy version of the pitched model of the KTV aerator for flexible tiles. Protected from weather and insects by a polyurethane (reticulated) filter. Ventilation efficiency: approx. 1 element/20 sq.m.
Pilot pitched. Used on roofs covered with shingles. It is attached to the roof through the passage element directly in the process of laying the roofing material. The lower sliding element allows you to fix it strictly vertically with any roof slope. Ventilation efficiency: approx. 1 element / 5 sq.m.

The Finnish manufacturer SK Toute offers a wide range of purpose aerators. Vilpe Vent models fundamentally different from products from other manufacturers:

The exceptionally high quality of the materials used, which provides excellent characteristics of such systems: exceptional resistance to aggressive environmental influences and ultraviolet radiation.
They are reliably protected from corrosion.
Universal, that is, they can be installed on any roofing system.
High degree of sound insulation.

One of the mandatory elements of ventilated roofs is a roof aerator, which is installed to remove water vapor and moisture that accumulate in the under-roof space. The number of aerators on a flat roof depends on its area, as well as on technical features devices selected for installation. As required building codes for every 100 sq. m of the roof surface should account for one fan. For installation, the most elevated points attributable to the junction of heat-insulating plates are selected. Thanks to the installation of deflectors, it is possible to increase the life of the waterproofing carpet, as well as to prevent the appearance of blisters on the surface of the soft roof during temperature changes. On pitched roofs covered with metal, flexible (bituminous), ceramic or cement-sand tiles, ventilation devices are installed as high as possible, but at the same time they do not reach the ridge closer than half a meter.

Experts have found that during the operation of soft roofs, the main disadvantage is the accumulation of excess moisture in the insulation and screed. Increased moisture in these layers of the roofing cake causes a number of negative consequences, namely:

Swellings of the roofing that appear as a result of heating a soft roof in the summer due to the delamination of bitumen-polymer materials under the influence of high temperatures.
An increase in thermal conductivity provokes moisture accumulated under the waterproofing, which worsens the thermal insulation properties. Theoretically, it has long been proven that with an increase in the level of moisture by 1-2 percent, an increase in the coefficient of thermal conductivity by 30-40 percent occurs. This leads to an increase in the cost of heating the facility. In addition to heat loss, waterlogged roofing layers can lead to mold growth.
The destruction of the waterproofing carpet and the cement-sand leveling screed is caused by the ingress of moisture into the pores of the material. After the ambient temperature drops, the crystallization of the water that has penetrated into the pores occurs and its volume increases. This process is accompanied by the appearance of microcracks and the destruction of the leveling screed. Similar negative processes occur in the waterproofing layer, violating its integrity.

What does a roof ventilation device look like?

The roof aerator promotes an exit of water vapors from under a roof surface

The roof aerator is made of pipes, the diameter of which can vary from 63 to 110 mm. From above, the pipe is covered with an umbrella, which prevents precipitation from entering the fan. These devices are made from the following materials:

AISI 316 stainless steel;
polypropylene.

These materials provide the aerator with resistance to ultraviolet rays and atmospheric precipitation, corrosion damage and mechanical stress. Roof fans are used in different climatic zones. They can be operated at temperatures ranging from -50 °C up to +90 °C. Even plastic aerators are able to withstand the short-term action of the flame of the burner used when laying rolled bituminous materials.

Manufacturers produce aerators different shapes and appointments

Important! These devices can be installed not only when installing new roofs, but also when performing current repairs of long-built roofs. At the same time, it is possible to save on the costs of operating the roof.

Installation of aerators for the construction of new roofs

When laying a new roof on a base made of reinforced concrete floor slabs, plastic aerators are installed on the bottom layer of the material. In this case, the work is performed according to the following algorithm:

in the intended installation location of the fan, a hole is cut in the screed layer, insulation, reaching the vapor barrier layer; hole diameter is from 80 to 120 mm;
expanded clay is poured into the resulting hole;
apply mastic, glue or sealant to the horizontal part of the aerator to ensure better adhesion of the device to the roofing carpet;
wait for the mastic, glue or sealant to harden and carry out additional fastening of the fan using six self-tapping screws screwed around the entire circumference of the pipe skirt;
then, the upper layer of the roofing carpet is fastened, while the aerator should be in the place of the end overlap of two adjacent roofing sheets (overlap width - 150 mm);
roofing material at the place of installation of the aerator is laid freely;
then it is necessary to fuse (apply or spray, depending on the chosen technology) a patch from the upper layer of the roofing material on the place where the aerator and the roofing mat meet in such a way that it overlaps the skirt of the device and enters the roofing carpet at a distance equal to at least 150 mm.

Aerators are selected depending on the purpose

If the device of a soft roof will be carried out in one layer, then the aerator must be installed directly on the screed.

When installing deflectors in a roof with a base made of profiled sheet, you can follow the rules described above. However, there are slight differences, which consist in the fact that the hole in the intended installation site of the roof aerator must pass through the top layer of insulation to the bottom layer of thermal insulation. Then the ventilation device is fixed with long self-tapping screws to the profiled sheet through the insulation or directly into the heat-insulating plate itself.

Important! When performing current repairs old roof a hole with a diameter of 80 to 120 mm is cut in the carpet. Depending on the number of layers, the hole extends to the vapor barrier layer or to the screed. After that, the aerator is installed with the application of mastic and subsequent fixing with self-tapping screws. The work is completed by applying the top layer of the welded roof.

Installation schemes for roof aerators

Schematic arrangement of a traditional unexploited roof on which the ventilation device is installed:

Traditional unexploited roof with aerator.

expanded clay layer;
vapor barrier layer;
thermal insulation layer;
leveling screed;
bottom waterproofing layer;
top waterproofing layer;
roof aerator body;
protective umbrella.

Scheme of an unexploited roof, which incorporates one layer of waterproofing:

Scheme of an unexploited roof with one layer of waterproofing.

expanded clay layer;
reinforced concrete floor slabs;
vapor barrier layer;
thermal insulation layer;
leveling screed;
waterproofing layer;
roof aerator housing;
protective umbrella.

Schematic arrangement of a traditional operated roof, on which a ventilation device is installed:

expanded clay layer;
reinforced concrete floor slab;
declining from lightweight concrete;
vapor barrier;
thermal insulation layer;
leveling screed;
waterproofing layer;
washed gravel;
protective umbrella;
roof aerator body.

Schematic device of the inverted roof, on which the ventilation device is installed:

Inverted roof with aerator.

expanded clay layer;
reinforced concrete floor slabs;
light concrete slope;
vapor barrier layer;
thermal insulation layer;
leveling screed;
waterproofing layer;
drainage;
backfill of washed gravel;
top coat of paving slabs;
protective umbrella;
roof aerator body.

Conclusion

The need for installation ventilation system depends on the complexity of the shape of the roof and its dimensions, as well as on the state of the vapor barrier and the degree of air humidity in the interior. When installing several aerators, a distance between them of 12 m is maintained. On roofs with a pronounced valley line and a ridge, aerators are installed along the ridge and in the valley on the watershed. For facilities operating under conditions high humidity(laundries, baths, saunas, swimming pools), engineers of design organizations must perform an accurate calculation of the installation points of ventilation devices.

A well-planned roof must have aerators

It is also better to trust the installation of ventilation systems and their individual elements to professional companies that have mastered the intricacies of the technology for performing these works. Self installation carried out with errors will only aggravate the condition of the roof. If the roofing carpet is destroyed, the repair costs may not be comparable to the wages of professional roofers.

Product Description:

Roofing aerator TechnoNIKOL 160x460 mm, black, is made from a block copolymer of ethylene and propylene, which provides high reliability and resistance to environmental influences on the roof. Provides reliable operation for 25 years.

Roofing aerator TechnoNIKOL ECO 160x450 mm, dark brown, has a smaller wall thickness and is made from a mixture of polymers that provide resistance to operational loads for 15 years.

Roofing aerator TechnoNIKOL ECO 75x340 mm, black, made from a mixture of polymers and is used only for roof repairs.

Plastic aerators have additional UV protection, which allows them to be used in all climatic zones of Russia.

Application area:

Roofing aerators TechnoNIKOL 160x460 mm and TechnoNIKOL ECO 160x450 mm allow you to effectively remove excess moisture from the roofing pie. The installation of aerators prevents the formation of blisters under the roofing material, which significantly increases the life of the roofing. Installation of aerators when installing or repairing a combined roof further increases the effectiveness of mineral wool insulation by reducing its moisture content.

In systems with mechanical fastening of the roofing mat to the base, it is recommended to install one aerator per 150m2 of roof. The most optimal is the placement of aerators in the roof ridges at a distance of 6-8 meters and at the highest points along the valley (funnel lines).

At least 1 aerator per 100 m 2 is installed in roofs laid on cement-sand screeds using Uniflex EPV Vent and Technoelast EKV Vent materials. Aerators are installed evenly over the surface of the roof. The arrangement is considered optimal when most of the aerators are installed in the watershed and the distance between the aerators does not exceed 12 m, and the distance to the vapor barrier structure (parapet, expansion joint, wall) does not exceed 6 m.

The design of the aerators additional opportunity insulation with expanded clay gravel. This eliminates the freezing of the roof at the place where the aerator is installed and the formation of an excess amount of condensate on its walls.

Roofing aerator TechnoNIKOL ECO 75x340 mm can only be used for roof repairs. The aerodynamic shape and reduced flow area allow it to work only after a sufficiently strong heating of the roof. It is installed 1 per 100 m 2 regardless of the method of roof installation and only prevents the formation of blisters under the roof. Its design does not imply additional insulation with expanded clay gravel.

Roof aerators are forbidden to be installed in combined roofs above refrigerators and ice arenas.

Manufacturing jobs:

Installation of aerators and requirements for their installation are described in the instructions for use given on the packaging. Can be used in all climatic regions according to SP 131.13330.

Storage:

In a warehouse protected from rain.

Transportation:

Transportation is carried out by all types of transport in covered vehicles in accordance with the Rules for the carriage of goods in force for this type of transport.

Packing Details:

Roof aerator TechnoNIKOL 160x460 mm - code EKN 34591, roof aerator TechnoNIKOL ECO 160x450 mm - code EKN 39091, roof aerator TechnoNIKOL ECO 75x340 mm - code EKN 5489.

Among the many structural elements of a soft roof, soft roof aerators are of the utmost importance.

This is due to the fact that with insufficient ventilation of the internal space of the roof, moisture and condensate accumulate inside the insulation and screed.

This leads to a deterioration in thermal insulation, the appearance of mold, the gradual destruction of the screed and the waterproofing layer.

As a result, swelling of the soft roofing occurs. For these reasons, it is necessary to install a soft roof covering carefully and carefully, taking into account all the technical nuances.

Causes of moisture and the purpose of aerators

Aerators for ventilation of soft roofs are one of the essential structural elements of such roofs.

They are designed to prevent the formation of moisture, water vapor inside the space, which is located directly under the roof, and remove them to the outside.

Despite the presence of insulating layers in the roof structure, condensate, water vapor penetrate there in two ways: from the inside and outside.

Firstly, in the process of household activities of residents during their stay inside the house, steam is generated, which rises, accumulates at the top, penetrating under the roof.

When warm internal steam collides with cold air environment condensation is formed.

Such droplets of moisture "process" the metal elements of the roof, the crate, rafters, insulation, methodically destroying them.

Secondly, in the cold season, due to the temperature difference from inside / outside, frost forms on the outside of the roof.

The ice periodically melts, water seeps into the joints, and the soft roof begins to leak over time.

At the same time, the coating itself is covered with cracks, which increase, and then collapse when the water inside them freezes. As a result, the entire coating fails.

In summer, on the contrary, due to direct exposure to sunlight, the outer coating heats up to critical temperatures, and the internal moisture tends to evaporate through the roof.

As a result, swelling occurs, and ultimately the destruction of roofing surfaces.

In addition to such problems, swelling of thermal insulation reduces its insulating properties. As a result, heat is not stored inside the house, so the roof becomes cold.

When installing various roofs of private houses, a person is faced with the problem of how to prevent the formation of moisture inside the roof structures.

You can get rid of accumulated moisture, prevent its occurrence by arranging the circulation of air flows between the interior of the house and the external environment.

Roof aerator for ventilation of soft roofs due to forced draft, which occurs due to the difference in pressure from inside and outside, draws wet vapors out from under the roof structure.

This is most relevant for attics and warm attics, since natural air circulation occurs in the cold space under the roof through numerous cracks.

To install ventilation correctly, it is important to ensure a continuous supply of fresh air. Ventilation products must be made in the cornices.

This will ensure the passage of air through the attic space, its heating, movement upward under the roof.

For effective air circulation inside the roof structure, it is important to install such a ventilation system with the required number of its individual elements, which is calculated depending on the roof area.

Installation of ventilation aerators on a soft roof ensures the dryness of the coating and thermal insulation.

Aerators for soft roofs must have certain qualities and have the following characteristics:

resistance to direct exposure to sunlight;
resistance to corrosion processes;
resistance to extreme temperature changes;
strength.

Made of durable plastic, such devices meet all the requirements, therefore they are suitable in all respects.

A roof ventilation element installed on a corner that corresponds to the upper line of connection of two roof slopes is called a "ridge" element.

The ridge aerator for soft roofs is a continuous ventilation system.

By its design, such a device is most suitable for installation on the upper corner: it is corner piece with evenly spaced holes covered with protection against possible contamination.

Installation of a ridge aerator system on a soft roof is quite simple, since no special calculations are required.

The ventilation system is mounted directly on the "horse" along its entire length.

It is necessary to combine all the elements into one integral system, which is closed from above with ridge tiles. At the same time, it is important to ensure a constant flow of fresh air from the inside to the outside.

Installation of a ridge aerator can be done on your own without much difficulty, following a certain algorithm.

All work is performed in the following sequence:

A ventilation slot is cut at the base of the “horse”, which can be located both at its top and on both sides of it. The main thing is to leave an untouched gap of about 30 cm from the edge of this corner, and keep the thickness of the ventilation gap within 3 - 8 cm;
Ridge tiles are laid along integral edges;
Using roofing nails or wood screws separate parts a ridge aerator is mounted, which should ultimately be an integral functional structure;
At the next stage, this structure is covered with ridge tiles: in this case, the petals of the coating are overlapped;
The ends of the aerator must be sealed with silicone.

The soft roof aeration system installed in this way will ensure its high-quality ventilation over the entire area.

Spot aerator

In addition to the ridge aerator, point ventilation options are used, which are installed on a soft roof over the entire area.

Spot ventilation element (vane) is used in the following cases:

for a roof with a slight slope up to 12 degrees;
to improve the efficiency of the ridge ventilation system;
when adjoining the roof surface to vertical walls and the impossibility of installing a ridge aerator.

On the pitched roofs point aerators are installed at a distance of not less than 0.5 m from the ridge. One small diameter wind vane is installed on 60 m 2, and of a larger diameter - on 100 - 120 m 2.

The distance between such roof ventilation devices should be approximately 10 meters. Calculations are made according to all these data.

It should be remembered that on flat roofs point ventilation elements must be placed in the most high points along the slope of the surface.

Installation of point aerators on a soft roof must be carried out in the following sequence:

when repairing a soft roof, it is necessary to cut a hole at the site of swelling, and when building a new coating, it is better to cut a hole at the junction of insulation plates;
in the roof sheathing, you need to cut a hole 10 - 20 mm larger than the diameter of the weather vane, which passes through the layer of screed and insulation;
install a weather vane over the cut hole and fix it around its perimeter with nails or screws;
smear the top of the skirt with bituminous adhesives to ensure waterproofing of the joints;
after drying, lay a geotextile pad treated with liquid rubber around the entire perimeter;
the skirt of the wind vane should be covered with tiles, put on top of the aerator mesh and fixed with screws;
at the last stage, you need to put on the cap and fix it.

Following this sequence, you can easily install such a roof ventilation system on your own.

Installation of ventilation aerators on a soft roof prevents the formation of condensate, mold, fungus inside the roofing "pie".

All this protects structural elements roof and ensures a long service life.

Therefore, from the very beginning, when building a roof, it is necessary to carefully consider the installation and implement correct installation aerators.

Such measures will help ensure effective air circulation, freeing the inner layers of the roof structure from moisture and condensation.

Without a roof aerator, it is impossible to complete the installation of flat and pitched roofs. Such an aerator helps to ventilate the room, helps to remove excess moisture.

Of course, you need to know what aerators are, how they differ from each other. It is also worth talking about the features of mounting a roof with an aerator.

There are clear advantages to using this technology that need to be mentioned.

Ventilation is necessary for any roof, because in this case the roof space will last much longer.

If a lot of moisture accumulates in the insulation or waterproofing material, this can harm the condition of the roof.

As soon as the water freezes due to temperature changes, the roof may lose its functionality and reliability. That is why the installation of the aerator must be carried out when installing the roof.

What are the advantages of an aerator and why should you use it:

reliable ventilation of the space under the roof;
removal of any excess moisture;
removal of water vapor;
in the case of a flat roof, the aerator prevents the roofing material from swelling;
removal of any condensate from the roof space.

Regardless of the characteristics of the roof, installing an aerator will help extend its life. In addition, the aerator is easy to install and will not cause much discomfort to the owner of the roof.

The principle of operation and types of aerators

The principle of operation of the aerator is based on the pressure difference in the space of the roof and outside. Thanks to the original aerator cap, natural draft is increased, which gives the device the greatest efficiency.

Of course, you need to talk about the types of aerators and the key features of each device.

plastic aerators

Such devices ideal for use on.

The aerator for such a roof should be installed on the surface, as close as possible to the ridge. In addition, it must be resistant to temperature extremes, corrosion, as well as to negative influence ultraviolet.

Plastic meets all the requirements, in addition, such an aerator has an affordable price.

The most practical and durable options. Such aerators are acid-resistant, they can be used at a wide temperature range.

In particular, the aerator works effectively at temperature differences from -50 to +90 degrees Celsius.

Ways to install an aerator

It is used in cases where the roof has already been built and there is no time to dismantle it.

To do this, they arrange ventilation pipes into which pipes of small diameter (no more than 7–12 centimeters) are inserted. Such an aerator, resembling a pipe in shape, is securely closed with an umbrella-like lid so that moisture does not get inside.

At the marked place in the roofing carpet, a small hole is made with a depth up to the insulation, where the pipe will be located. The bottom of the pipe is specially coated with mastic and pressed as tightly as possible to the roofing. This completes the installation.

On roofs with a flat roof, the aerator is installed along the entire length at the highest points, as well as at the junction of the heat-insulating plates themselves.

If it is necessary to install aerators for industrial premises, swimming pools and baths, the number of such devices must be calculated in advance during the construction of the premises. Installation also needs to be carried out in advance - before the final construction of the roof.

Prices for roof aerators

The cost of aerators varies greatly. So, for example, you can find models that will cost 300 rubles, and there are special variations, the price of which is several thousand.

For example, a Monterey aerator for roofing can cost 2,000 - 2,200 rubles.

However, here it is important to pay attention not only to the cost, but also to the scope of the aerator. For example, models for cost within 1,000 rubles.

Models from the manufacturer Alipai are also popular, which are also inexpensive - within 1,500 rubles. Roof aerators from TechnoNikol will be a little more expensive - in the range of 1000 - 1700 apiece.

Summing up

So, what conclusions can be drawn about the purchase and installation of an aerator?

The roof aerator really is a reliable protector from moisture. With it, you can easily ventilate the under-roof space.

As a result of installing an aerator, the owner of the house significantly increases the durability of the roof and its reliability. The most important thing is to choose the right aerator and correctly install it!

Roof aerator installation video

Ventilation of the under-roof space, aerators on the roof

Roof aerator, very important element on the roof, it can be mounted on roofs with various materials, as well as slope angles. This element has a lot of functions. Firstly, a roofing aerator removes water vapor that enters the roofing pie from inside the house. This occurs before increased humidity occurs in the roof space. Secondly, roof aerators seriously increase the service life of the insulation and the entire truss system, the tree does not dry out. And finally, the aerator prevents the accumulation of condensate at the bottom of the waterproofing, thus the film is not overloaded with excessive moisture. Ventilation of the under-roof space is an integral part of any roof structure. When in the summer the sun heats up the roofing material, which you can’t touch with your hand, then under the roof it’s almost like in a bathhouse. Therefore, we strongly recommend installing aerators for ventilation, let your roof breathe and serve you for many years.

The soft roof, so popular lately, has a lot of advantages. However, its operational properties and durability depend on how dry it will be inside the roofing cake. Therefore, ventilation of the under-roof space should be given special attention during the construction of continuous bitumen decking. Roof aerators will help prevent moisture from stagnating in inaccessible places, which ventilate the entire space under the roof. The aerator for a roof consists of plastic, steady against differences of temperature. This is a kind of turtle with a shell that covers it to protect it from snow and rain. In order to calculate the number of aerators on the roof, you just need to understand the total area of \u200b\u200bthe roof and divide it by fifty. Since one roof aerator is able to ventilate no more than 50m2 of the roof area.

The operation of such a device is based on the pressure difference (internal and external) and the thrust that occurs in the aerator pipe due to the formation of reduced pressure.

What is a roof aerator

The roof aerator is a special device for removing excess moisture from the space under the roof. Such a device is installed on the roof. Roofing and slope in most cases do not matter.

With the help of an aerator, the insulation is dried, and the process of condensate evaporation is also accelerated, which makes it possible to sufficiently save on repair work.

The evaporation rate closely depends on the circulation of air flows, which are formed precisely thanks to the roof aerator.

This type of device may have:

different size;
different modification.

The direct purpose of aerators is:

in the removal of condensate;
In airing the space under the roof;
In the removal of moist air;
In preventing the development of decay processes under the roof;
In the prevention of possible risks of roof leakage.

Such devices can be installed both during construction and on an already equipped roof, and their number directly depends on the technical ability of the roof and the slope area. In other words, to calculate the correct number of devices for installation, it is necessary to take into account:

Roof dimensions;
The amount of moisture (in the room);
Roofing condition.

The most important problem with soft roofs is carpet swelling and roof leakage. Excess moisture can get into the space under the roof even during the installation work, which will further lead to swelling of the coating.

The roofing aerator for a soft roof will prevent destruction of a roofing cover. The advantages of the Katepal soft roof are revealed.

Roofing aerators for soft roofs provide:

Removal of steam caught under roofing from the premises;
Minimization of excess pressure in the roofing pie;
If the pressure inside the roofing cake is too high, this can lead to the formation of bubbles on the surface of the coating, which will not only ruin appearance buildings, but also violate and significantly reduce the life of the roof.
Prevention of condensation.

The main enemy for such a roofing surface as a metal tile is moisture. It is formed in the place (under the roofing sheet) of the protective coating, where scratches could remain during installation, or in the places of bolt holes. An aerator will help to avoid repairs and save the roof in time.

A metal roof aerator is a special installation that:

Helps to remove moist air outside;
Prevents the formation of corrosion.

For corrugated roofing, the presence of an aerator, in many cases, can also be a salvation. This device will be installed under the roofing material and will perform the following tasks:

Fill the roof with fresh air;
Removes moisture from the ventilation cushion;
Removes stale air;
It will bring various gases and dust out.

Aerators have a lot of advantages:

Organize ventilation;
They remove condensate, which significantly extends the life of the roof;
Refresh indoor air;
Minimize the possibility of the appearance of not only mold, but also other harmful microorganisms.

Roof aerator installation

Installation of this type of device is carried out in several stages:

A special hole is made in the roof, which should reach the very depth of the insulation material;
Remember that the hole made must exactly match the size (diameter) of the aerator pipe.
If necessary, it is necessary to remove part of the wet insulation and replace the removed fragment with a dry one;
The bottom of the built-in pipe must be smeared with mastic, after which it is pressed to the base of the roof;
An additional branch pipe skirt is fixed on the roof with self-tapping screws (in a circle);
An additional layer of waterproofing must be installed at the bottom of the pipe.

Roof aerator TechnoNIKOL

The concept of a ventilated roof has always implied the need for 2 ventilation circuits:

Ventilation of the space under the roof (part of the ventilation related to the entire structure);
Ventilation of the space available between the waterproofing layer and the main roofing.

Once upon a time, the organization of a proper ventilation system, not only for the space of the house itself, but also for the roof in particular, was practically inaccessible to implementation. However, today, thanks to the use of the latest technologies and the use of all the possibilities of roofing material, this problem has been 100% solved.

Even at the design stage of a building, it is important to pay Special attention ventilation system.

The advantages of installing a TechnoNIKOL roof aerator include:

Unified product design;
Extensive color range;
Manufactured using raw materials that are not subject to corrosion;
The presence of all types of ventilation elements for the device in the private sector;
Installation on an already finished roof;
Tight and fairly simple design;
The product has been successfully tested not only by time, but also in various climatic conditions;
Resistant to color fading when exposed to intense UV rays;
Installation on roofs with any slope.

One of latest models Roofing aerator can be called a roofing aerator TechnoNIKOL eco 160x450 mm, which consists of 3 parts. Its design has been carefully thought out and allows:

Remove all existing excess moisture from the entire roofing pie;
Increase the service life of roofing;
Improve thermal insulation properties.

The best solution for roofing this type of equipment will be a TechnoNIKOL roof aerator. The price structure is quite flexible. Some samples can cost 300 rubles, while others are more advanced and complex models can cost more than 3 thousand rubles. However, in order to improve the quality of the roof and extend its life, it is still worth considering installing such equipment.

Turbine type roof aerator

Such an aerator is one of the possible elements of passive ventilation. In other words, a hood powered by electricity, or a pipe with an electric fan. This type of aerator works quite silently and does not require energy costs.

Depending on the wind speed and the diameter of the device, its turbines are capable of extracting maximum moisture not only from the roof, but also directly from the room itself.

Experts advise to take a closer look at aluminum models of turbine aerators, as they do not rust.

When choosing a turbine type aerator, it is important to pay attention to the slope of the roof, since not all of the turbines can be installed on roofs with slopes of various degrees. Pay attention to the packaging and instructions, since it is there that manufacturers write the degree of roof slope that is suitable for the device of each of the models.

roof aerator cost

The price of this type of device may vary. Currently, construction companies and shops are ready to offer a huge number of devices that meet not only the latest requirements and have a huge number of possibilities, but also those devices that even an avid "economist" can afford.

The price range is quite democratic. The minimum price for a roof aerator will be 260 rubles, while the maximum can reach 3 or more thousand. In other words, there are plenty to choose from.

Video

Installation of a roof aerator requires compliance with certain rules, which are described in the video clip:

A roof aerator is a device whose main purpose is to remove excess moisture not only from any surface of the under-roof space, but also from inaccessible places located between the layers of the roof pie. This is just one of its uses. Some types of deflectors are used in diversion systems Wastewater, as well as among aquarists.

Why the roofing cake must be dry

To get a full answer to this question, you need to understand why water is formed, and what consequences this leads to.

Reasons for the formation of moisture

The most vulnerable from these positions is a soft flat roof. Accordingly, the materials included in the pie are stacked on top of each other directly on the concrete floor slab, which is a barrier between the interior of the house and the external environment. During the operation of such a structure, there is a high probability of peeling or swelling of the roofing. How does this happen?

Water vapor from the upper floors penetrates through the ceiling into the under-roof space and condenses in the heat-insulating layer and cement-sand screed. Moisture can also seep from the outside through the smallest microcracks invisible to the eye that are present on any roofing material. There is also the option of moisture getting into the under-roof space during installation work.

Moisture, once inside the “layer cake”, when heated in hot weather, turns into steam, and he, in turn, trying to “escape” from the confined space, tears the roofing carpet from the base and swells it.

Negative effects of high humidity

First of all, we note the danger of high humidity for human health, since it creates a breeding ground for the development of mold and its spread throughout the house.

Violation of the normal level of humidity leads, as a rule, to violations in the roof structure. The water accumulated over the summer and autumn freezes with the onset of cold weather and begins to expand, simultaneously stretching the roofing from the inside. This can lead to its breaks and even bring the coating to an unusable state. Moreover, frozen water can also damage the screed.

On a note

If, as a result of the destructive action of water, the roof is badly damaged, then it may be necessary to completely disassemble it, dry the surface and replace it with a new one. The event, frankly, is very expensive. The roof aerator is considered the optimal solution for the prevention of such conditions.

Types of aerators

All roof aerators serve to remove condensate from the under-roof space, ventilate and remove moist air to the outside. However, there are certain differences between them:

the size,
material,
modification,
mode of action.

Deflector and roofing material

For soft roofing:

removes steam that has fallen under the roof covering from the room;
minimizes excess pressure in the roofing pie, which is very important to ensure the normal operating life of the roof;
prevents the formation of condensate.

An excellent solution for soft roofing is the TechnoNIKOL roofing aerator made of weather-resistant impact-resistant polypropylene. V flat roofs they are installed, evenly distributing over the surface, either at the joints of heat-insulating plates, or in places with the highest mark.

When choosing the diameter of the device, two parameters are taken into account:

what technical characteristics does the roofing aerator have;
what is the area of the roof.

on the photo is a roofing aerator for metal tiles

The main enemy of a metal roof is moisture. The main places of its accumulation are:

places under the roofing sheet where scratches remained during the installation process;
bolt hole locations.

Installing a deflector on the roof helps remove moisture from the air to the outside and prevents the formation of corrosion. On one sheet mount at most one roof aerator.

The housing of the device is usually made of materials that are resistant to corrosion or acid environments, temperature extremes and UV radiation. The best materials today are stainless steel and durable plastic.

Installation under a corrugated roof:

fills it with fresh air;
removes condensate from the ventilation cushion;
removes stale air;
removes dust and various gases to the outside.

In pitched roofs, the deflector is installed as close as possible to the ridge, stepping back from it by about half a meter.

Design options

ridge aerator for soft roof

By design, the aerator is a short pipe with fastening elements and strips and caps that prevent moisture from the atmosphere, birds and insects from penetrating into the under-roof space. According to the design, there are several options.

Installation

The best option is to install the device at the time of the construction of the roof. However, this does not mean that it cannot be mounted on an existing roof. The installation of such devices is carried out in several stages:

roof deflector installation

A special hole is made in the roof, reaching to the very depth of the heat-insulating material. The dimensions of the hole made must exactly match the diameter of the deflector pipe.

If too wet insulation is found at the installation site, it is recommended to partially replace it with a new dry one.

To improve adhesion, bitumen is applied to the lower part of the inserted pipe and only then pressed against the base of the roof.

An additional branch pipe skirt, a protective frame, is fixed in a circle using self-tapping screws.

Additional waterproofing is installed at the bottom of the pipe and all joints are carefully sealed to prevent leakage.

Aerators for metal tiles have a different design. They are mounted on both slopes with a minimum indent from the ridge of 0.60 m. Installation work recommended for summer.

Video instruction for installing the deflector

Installation of a soft roof does not tolerate trifles. Sometimes, thinking to save money on such a seemingly optional detail as roof ventilation, the developer is faced with a lot of trouble. The roof begins to leak, the house smells of dampness, icicles accumulate on the cornices. And, the apotheosis of everything, is the fleeting destruction of expensive roofing material. Such troubles occur because moisture penetrates into the soft roof cake, seeping into the insulation, roof structures and the bituminous coating itself. You can solve the problem by installing artificial ventilation ducts - aerators on the roof. Air will circulate through them, pulling out excess moisture and drying the inner cake of the structure.

Thus, the installation of aerators on a soft roof is a process recommended by experts, and in some cases (over attic floor, for example) - mandatory, preventing damage to it and ensuring a comfortable stay in the house.

It is clear that aerators provide ventilation and drying of the roofing cake from moisture. But where does she come from? After all, manufacturers initially position a soft roof as airtight. Moreover, in the composition of the roofing pie there are layers of hydro- and vapor barrier (vapor barrier - in the case of a heater).

But this does not save from the presence of wet vapors. They are an indispensable attribute of any living space, formed in the process of cooking, washing, taking a bath and even, in the end, human breathing. According to studies, every day in a house where a family of 4 lives, 2-4 liters of water vapor is formed, some of which accumulates in the under-roof space.

When warm vapor comes into contact with a cold surface (during sharp jumps in temperature from outside to inside), it condenses. As a result, the smallest droplets of water begin to impregnate any structures and materials that they can “reach out to”. First of all, it is rafters, crate, insulation.

Another way for moisture to penetrate is from the outside of the roof. Warm steam, accumulating in the attic, heats the roofing from the inside. In winter, the snow on the roof starts to melt. Ice crusts form, which, when the situation worsens, also melt. Water penetrates into the joints of the coating, the roof begins to leak.

In addition, the coating itself suffers, which in any case has microcracks. Moisture penetrates there and, when the temperature drops, breaks the material. Cracks become visible, sometimes through. The cover is deteriorating.

On a soft roof, the consequences of excess moisture drinks manifest themselves quickly enough. You may notice:

The appearance of bubbles on the surface. A soft roof pie, as a rule, incorporates a waterproofing layer (top) and a vapor barrier layer (bottom). In fact, it is a closed hermetic circuit. In summer, the roof cake heats up to 80-100°C, as a result of which the moisture accumulated in the circuit forms steam and tries to evaporate. Similar situation leads to the appearance of blisters and the destruction of the roof.
Reducing the efficiency of the heat insulator. Wetting the heat-insulating layer even by 2% leads to an increase in its thermal conductivity (and a decrease in insulating properties) by 40%! Accordingly, such a roof ceases to fulfill its functions in terms of retaining heat, and heating costs increase.

All this leads to the destruction of the structure of the roofing material and the occurrence of leaks.

Appointment of aerators

How to prevent moisture from settling on roofing surfaces? Or to drain structures already saturated with moisture?

The laws of physics will come to our aid. Moisture can be removed by its evaporation, which occurs during the movement (circulation) of air flows. Since there is a significant difference between the internal (in the house) and external (on the street) pressure indicators, for air circulation it is enough to ensure the process of communicating two media.

If the attic is cold, then effective ventilation can be provided quite simply - through dormer windows, loose fit of cornice overhangs, gaps in the ridge. For warm attics and mansards, this solution is not suitable, since in the cold season unregulated ventilation will reduce the temperature in the room.

In such houses, the use of roof aerators is most acceptable - ventilation ducts connecting the under-roof and over-roof spaces. After installing the aerator, due to the pressure difference, forced draft is created in its pipe, which draws wet vapors from under the roof.

Very important point: in order for the process of extracting air through the aerator to become possible, it is necessary to provide a supply of fresh cool air in the overall system. Otherwise, air masses will not circulate. To do this, ventilation products are equipped in the cornices, where fresh air is continuously supplied. Passing through the attic space, it heats up and rises up - to the roof.

Thanks to the created draft in the aerator, it passes through its pipe and is thrown out into the street. With well-equipped ventilation, in just 1 hour, the air flow passes through the roofing cake 2 times, drying and ventilating it.

Accordingly, by installing aerators for a soft roof in the right amount, you can not worry about the dryness of the coating and insulation. Therefore, it is more correct to proceed with their installation at the construction stage. But, if for some reason this did not happen, you can do it later. The main thing is not to wait for the occurrence of irreparable defects in the roof (swelling, destruction of the material). Fortunately for many developers, with the help of aerators, you can not only prevent the accumulation of moisture in the new roofing pie, but also drain the old roof already saturated with moisture.

Varieties of aerators

For soft roofs, aerators are used, made of impact-resistant plastics that can withstand temperature extremes, corrosion, and UV rays. Depending on the design features, purpose and mode of action, there are 2 types of aerators: ridge continuous and point.

The ridge aerator is classified as a continuous ventilation system, as it is installed along the entire length of the ridge to aerate the entire under-roof space. In appearance, the design is a corner piece with holes protected by special barriers - from insects, dust, snow.

Point aerators are installed on separate sections (points) of the roof, as a rule, on slopes, less often on skates. Each such aerator is a ventilation pipe, protected from above by a cap of various configurations. Usually general form design resembles a "fungus" or "box".

The point pitched aerator has a flat base (skirt), through which it is connected to the roof. The base of the point ridge aerator is angular, designed to mate with the roof in the area of its upper horizontal edge.

Differences in the designs of existing types of aerators also implies a significant difference in the technologies for their installation.

Installation of a ridge aerator

The ridge aerator is the easiest to install, it does not require a special calculation of the quantity, as it is usually placed along the entire length of the ridge. Installation of a ridge aerator is recommended on roofs with a slope of 12-45°. At the same time, it is mounted only on the ridge, providing air circulation in the attic space.

Usage norms:

it is necessary to have ventilation on overhangs to ensure air flow;
it is recommended to install the aerator along the entire length of the ridge, connecting its segments into one structure;
ridge tiles are mounted on top of the ridge aerator, so the appearance of the roof does not suffer from an “alien” element.

Mounting technology:

In a solid base, a ventilation groove is cut with a circular saw. It can be one (at the top of the ridge) or two (on either side of the ridge). The total thickness of the ventilation gap should be 3-8 cm (depending on the recommendations of the manufacturer of a particular aerator). The slots are made so that they end 30 cm before the edge of the ridge, that is, the roof remains solid on both sides of the ridge.
Ridge shingles are laid along the edges of the ridge (where the ventilation gap has not been cut).
Install a ridge aerator. Each of its segments is fixed with elongated roofing nails or screws screwed through ready-made factory holes. At the same time, the segments are connected to each other, like parts of a designer.
The profile of the aerator is covered with ridge tiles. Its petals are mounted overlapping, according to the usual method, which does not differ from the technology of its laying along the ribs. The only difference is in the fasteners. In this case, the tiles are nailed to the aerator with elongated roofing nails.
The ends of the aerator, in places of interface with the roof, are sealed with silicone sealant.

An example of work in the photo:

The video plot will help to understand in more detail the intricacies of the roof aeration device on a soft roof:

Installation of point aerators

In addition to the ridge aerator, it is possible to use several point analogues. These aerators are used:

on roofs with a slope of less than 12 °, as well as on flat roofs;
to improve ventilation efficiency, in addition to a roof aerator;
if the installation of a ridge aerator is not possible, for example, if there is no ridge or if there are adjoining roofing materials to vertical surfaces and walls.

Usage norms:

installation of point aerators is performed on slopes, at a distance of 0.5-0.8 m from the horizontal edge of the ridge;
it is imperative to ensure air flow on overhangs;
one aerator provides effective ventilation of 5-100 m2 of roof (depending on the diameter and shape of the structure), in accordance with these data, their number is calculated - from 2 pieces or more.

Installation technology:

A hole is cut out in a continuous crate that matches in size with the internal gap of the aerator channel. To do this, the base (skirt) of the aerator is placed on plywood (OSB) and the contours of the hole are drawn on the roof, through the passage channel. Marking is done with a pencil or a nail. Using a jigsaw, cut a hole along the line.
The aerator skirt is placed over the hole and fixed with roofing nails or self-tapping screws (at least 6 pieces). Some manufacturers recommend using an adhesive fixation method in addition to fasteners. In this case, the reverse side of the skirt is smeared with bituminous mastic, glued to the base, and only then fixed with fasteners.
Glue the top of the skirt with bituminous glue for waterproofing the junction.
The skirt is covered with tile shingles, cutting them at the junctions.
An aerator mesh is put on top of the skirt, screwing it with self-tapping screws. Then they mount the cover (cap), snap it on and also screw it with self-tapping screws.
Similarly, the rest of the point aerators are mounted (in accordance with the calculation), which in the total mass will form a single ventilation system.

Here's what it looks like:

More visual information about the stages of installation of a point aerator can be obtained by watching a training video:

Thus, the installation of aerators is not a difficult job, even self-taught masters can do it. However, the benefits are enormous!

Thanks to aerators, water vapor is drawn out of the roofing cake, condensation is prevented, mold, fungus and mustiness are prevented. All this has a positive effect on the duration of operation. wooden structures(rafters, battens, sheathing), the work of thermal insulation, the microclimate of the dwelling.