Aerators for soft roofs. Installation of point aerators on a soft roof. Calculation of the number of aerators. Roof aerator TechnoNIKOL Aerator installation unit on a flat roof

The roof must always be dry. But now we are not talking about its outer side, but about the multiple inner layers of the roofing pie. At the same time, it must be dry, regardless of the materials used for finishing, whether it be slate, or a soft bituminous coating. Condensation and moisture accumulated in the under-roof space can quickly render the entire roof unusable and significantly reduce its service life. To avoid excess moisture inside the cake, you will have to install aerators for a soft roof. Consider what they are and how they are installed.

To understand why it should always be dry under any roof, you first need to figure out where water can come from there, condensation can form. Indeed, during the construction of the roof, craftsmen always try to make it as tight as possible, lay various waterproofing and vapor barrier materials under the roofing, which, in theory, should provide reliable protection.

The whole point is that take place in a residential building various processes associated with human life. People breathe, cook food, take a shower or bath. And during all these processes, the air in the house is saturated with steam - in other words, it becomes humid. Warm air rises and falls under the roof if it is not possible to exit through the vent. At the top, microscopic droplets of water settle on various materials - this is how condensation forms. At the same time, air saturated with water vapor easily penetrates even into the most inaccessible places through microcracks.

On a note! During the day, a person exhales about 1 liter of liquid into the air in the form of vapor. Adding to this amount all the water that enters the air during cooking, mopping or taking a bath, you can get a huge figure - up to 15 liters of water enters the air in the house during the day.

The accumulation of condensate under the roof poses a certain danger to all materials that make up the roofing pie. Wooden elements begin to be saturated with water, which causes decay processes. Such an environment is also favorable for the development of fungus and harmful microorganisms that are dangerous to the health of people living in the house.

Metal elements (for example, fasteners) inside the roofing pie, due to the increased level of humidity, begin to corrode and gradually collapse. If the water in the under-roof space, accumulated during the summer, freezes in the winter, it can easily damage some parts of the structure (even concrete floors), since, expanding, it will exert a pressing effect on the materials. Due to severe damage, the roof may even have to be completely dismantled and rebuilt.

Also, the effect of moisture is detrimental to insulating materials. If they get wet, then their thermal conductivity will increase significantly. This means that such a roof will no longer be able to retain heat well. In some cases, the insulation will need to be completely changed, because it will no longer be possible to fully dry it.

Moisture can get to the structural elements of the roof and outside. During heavy rains, melting snow, water can still find a loophole and get under the roof or into the roofing pie, even if its outer surface is well sealed. It is not worth excluding this option of additional "moisturizing".

On a note! From the point of view of vulnerability from excess moisture under the roof, any soft roof suffers the most.

Prices for various types and manufacturers of shingles

Flexible roof tiles

Soft roof and water

As for the soft roof, under it moisture actively accumulates in the insulating layer. At least because of this, the roof may bubble, especially if we are talking about a soft bituminous coating laid on a flat concrete roof. In this case, bubbles can occur here is why: in summer, the roof can easily heat up to 90 degrees or more. As part of soft materials bitumen is always present, which is a thermoplastic substance - it reacts sharply to changes temperature regime(may become brittle in cold weather or soft and ductile in hot weather). When the material is heated above 50 degrees, plasticity increases, and the quality of adhesion of the coating to the base depends, to a large extent, not at all on adhesion, but on the viscosity of the components included in the material or the mastic on which the coating was glued.

Defect of an ordinary roof - the formation of swelling of the roofing carpet

There is a closed hermetic space between the vapor barrier and waterproofing in the roof pie. As the temperature rises, the pressure in this area increases to 2-2.5 t/m 2 . The waterproofing rises, lifts the roofing, and thus swelling is formed.

To get rid of all the above problems, it is necessary to install an aerator during the installation of the roof. It will ensure the removal of air to the outside, and with it - and moisture. The device will allow you to dry the heat and waterproofing layers and prevent the accumulation of condensate.

What is an aerator and how does it work?

Roofing aerator - a design that serves to remove moisture from under the roof, including that which has formed in the roofing cake and not just at home. This element can be installed on a variety of roofs, having all kinds of slope angles and covered different materials. An aerator on a soft roof will prevent premature destruction of the entire roof structure due to moisture.

Inside the installed aerator, draft is created due to the formation of an area low pressure due to external wind currents and the pressure difference in the space under the roof and the street. The main functions of this design are as follows:

• removal of water vapor from the house to the outside;
• reduction of the pressure arising inside the roof between the layers (the risk of blisters on flat roofs is reduced);
• reducing the risk of condensation on waterproofing materials.

Externally, the aerator is a pipe with a cross section of 63-110 mm, having an umbrella on top, which protects the structure from rain and snow getting inside. It can also be presented in the form of a ridge bar with a lattice on the sides. The first aerator is placed on the roof slope, and its second variation is installed along the roof ridge.

On a note! The aerator can be installed during the construction process or on a finished roof.

Varieties of aerators

Aerators may differ from each other in materials of manufacture and design features. Most commonly used plastic products, however, there are also metal ones (made of steel) on sale, which are usually mounted on roofs made of metal tiles. In fact, all aerators are resistant to sunlight, rust, and temperature extremes.

Table. Types of aerators depending on the design features.

Type	Description
	This type of aerator looks like a small pipe or a low flat structure with a grate. This is the most commonly used option. Such a design functions in a separate area and is usually installed where there are problems with natural ventilation (on long slopes, complex roofs, in the area of ​​attic windows, valleys, etc.). Such aerators are pitched and ridge. In the first case, they are installed on the slopes, in the second - on the ridge. For soft tiles, a ridge variant is usually purchased - it is able to provide ventilation of about 20 square meters. roofs. Pitched aerators are usually mounted at a small distance from the ridge - about 15 cm.
	Such aerators are located along the entire length of the roof and provide maximum ventilation for the entire roofing pie, as well as the attic. The continuous form includes ridge types, as well as ventilation tapes. The latter inserts are mounted in the waterproofing layer. At the same time, they do not pass water at all.
	This is a kind of ventilation. It can be a hood or a pipe with electric drive. The model is selected depending on the angle of inclination of the slope.

On a note! The market for aerators is now quite extensive and makes it possible to choose this structural element in such a form that it can look organically on a roof of a certain type or style.

Prices for various types of ridge aerators

Ridge aerator

How to install?

Installation of aerators can be carried out both during the installation of the roof, and at the end of the work. In general, this structural element is not difficult to install if you know how to do it. The instructions will help you understand the installation steps ( installation of a point aerator in the finished roof).

Step 1. On the surface shingles a template cut to the size of the section of the lower part of the aerator is fixed with the help of self-tapping screws. It can be circled with a marker or further actions produce directly along its contour.

Step 2 According to the shape of the template, a hole is cut in the roof using a jigsaw. During cutting, it is important not to damage the waterproofing and insulation layers.

Step 3 If the template was screwed, then after cutting a hole in the roof, it is unscrewed and removed.

Step 4 Cut out pieces of roofing and battens are removed.

Step 5 With the help of a vacuum cleaner, particles of debris and sawdust are removed from the surface of the roof and from the resulting hole.

Step 6 A rubber-based adhesive is applied around the perimeter of the base of the aerator.

Step 7 The aerator is turned over and glued around the perimeter of the hole cut in the roof.

Step 8 The base of the aerator is additionally fixed on the roof surface with self-tapping screws. For convenience, the top cover can be removed from the aerator.

Step 9 After the aerator has been securely fixed to the roof surface, the top cover is returned to its place and screwed on.

Prices for popular models of screwdrivers

Screwdrivers

Attention! If several aerators are installed on the roof, then it is important to ensure that the gap between them does not exceed 12 m. In general, per 100 m 2 flat roof 1 aerator is used. On a roof with ridges and valleys, aerators are mounted near the ridge.

Video - Installation of an aerator on a soft roof

Installation of a ridge aerator-tape

Let's also consider an example of how ridge aerator installation.

Step 1. The base of the roof is being prepared for the installation of a ridge aerator. An opening 5 cm wide is made along the ridge, 2.5 cm on each side. On each side of the ridge, 20 cm are measured along it. This is the minimum distance that should not be cut.

Another photo of the process - 20 cm is measured

Opening width - 2.5 cm on each side

Step 2 For roofs with central beams, a 9 cm wide slot is made, 4.5 cm on each side of the ridge.

Step 3 The ridge is ready for ventilation installation when the remains of tiles and beams, as well as all debris, have been removed from the surface.

Step 4 The ridge aerator is quite flexible and is sold in reels. It rolls along the entire length of the skate from edge to edge, including places without slots.

Step 5 The edge of the ventilation tape is fixed with nails, two from each slope.

Step 6 The fixed tape is well stretched and fixed at the other edge of the ridge. If the roof is long, then you can fix the tape in stages.

Step 7 Excess aerator tape is cut off.

Step 8 End caps are installed. On both sides, mastic is applied to them. They must cover both ends of the moisture-proof membrane between the end cap and the bottom vent.

Step 9 The tape and end cap are nailed to the base of the roof as shown in the image. At least two nails must go through the tape and plug.

Step 10 A layer of mastic is applied between the roof covering and the ventilation tape.

Step 11 The not yet fixed part of the tape is nailed to wooden base roofs. The nails must penetrate to a depth of at least 1.5 cm.

Step 12 To close such ventilated skates, you will need bituminous tile segments, 3 tile elements are stacked together on top of each other.

Attention! If work is carried out in the cool season, then the tiles must be preheated.

Step 13 Tiles are laid on the ridge, starting from the most windy side. The first three-layer element is nailed to the roof through the aerator. An indent of 2.5 cm is made from the edge of the tile - a nail is hammered into this point.

Step 14 The second in a row three-layer tile element is laid so as to cover the nails on the previous element.

Step 15 The entire skate is made in the same way.

Video - Installation of a ridge aerator

A roof aerator installed on the roof will provide the house and the roof itself with good ventilation. It will not allow condensation to accumulate, will not allow water to destroy the structural elements of the roof. Installing an aerator is not difficult, anyone who has carefully studied the instructions above will cope with the task.

An aerator is a device that provides free movement of air in the under-roof space. Constant air exchange allows the removal of water vapor in the internal air and prevents its settling in materials and accumulation.

This contributes to the preservation of structures intact, eliminates the possibility of mold, fungus, rotting and destruction of the truss system or other structures. In addition, aerators maintain the efficiency of the roofing itself, protect it from corrosion, (for soft roofs), and deformations.

Some homeowners tend to think of aerators as a kind of fashion element roofs, arguing that they are installed on new roofs, and they were never installed in old houses. However, this point of view is wrong. It's not about the age of the house, but about the state of the attic or roof space.

Important! For unheated premises, the installation of aerators is not necessary, since they themselves are well ventilated and do not have a high content of water vapor in the air. New houses with residential attics (mansards) have a different composition of the atmosphere and need well-organized air exchange.

Principle of operation and functions

An aerator is an ordinary section of pipeline protected from water, dust or wind. By itself, it does not perform any functions, serving only as a protection for the ventilation hole in the roof. However, the air flow that arises as a result of its existence performs a lot of tasks:

• provides natural ventilation of the cavity or the entire attic space
• removes moisture and water vapor, helping to dry materials
• ensures the absence of moisture in the insulation layer, significantly reducing its weight and restoring performance

Scheme of the device of the aerator for the operated roof: 1 - expanded clay; 2- reinforced concrete floor; 3 - lightweight concrete - slope; 4 - vapor barrier; 5 - insulation; 6 - coupler; 7 - waterproofing; 8 - backfill of washed gravel; nine - paving slabs; 10 - protective cap; 11 - aerator body.

Roofing is the boundary between different temperature zones. On a hot summer day, its surface can be heated up to 90°, which causes wet materials to actively evaporate it, resulting in high blood pressure pair. From this, bubbles appear on the surface of the roof, deforming the coating sheet and forming small cracks in it. Repeating the cycle many times leads to the destruction of the roof and the appearance of leaks.

The installation of aerators allows the resulting steam to be freely removed from the under-roof space and ensures the durability of the roof.

Where does moisture come from?

Moisture can appear both from the outside, penetrating through microscopic cracks or holes in the roofing sheet, and from the inside. The air in residential premises has a high content of water vapor, which is absorbed into, impregnates them and evaporates from the outside. If , then it is deprived of constant communication with the external atmosphere. Moisture cannot be removed, so it accumulates in all materials where it can settle.

The most dangerous thing is getting wet insulation or roofing carpet, which is laid for (shingles). Wet thermal insulator (usually mineral wool) almost completely loses its working qualities, and the roofing carpet rots and releases moisture into the wood of the truss system, forms accumulations under the roof sheet.

The need to dry the roofing

Since the roof is impervious to moisture, steam accumulates in adjacent materials - a layer of insulation, a roofing carpet or other materials - and begins to gradually destroy them. Damp spots form, mold or fungus appears, organic matter begins to rot. The situation is complicated by direct sunlight, which heats the canvas from the outside and increases the effect of steam on all adjacent surfaces and materials.

Steam pressure can reach 2-2.5 t/m 2 , which is an unbearable burden for materials. If you do not organize the removal of steam and drying of materials, the process will intensify in a short time and provoke rotting and subsidence of the truss system. In the most difficult cases, roof collapse is possible.

Types of roof ventilation devices

Aerators perform a single task - they form and protect the vent from external influences.

However, there are different designs roofing devices, which are designed for installation on flat or pitched roofs, are made taking into account the height of the snow cover or the installation location on the roof sheet.

Installation of aerators can be carried out both during the laying of the coating and on the finished roofing sheet, which increases the maintainability of the entire system. Consider the most common and popular types of aerators:

Point aerators

Point aerators are structures that form ventilation holes on the roofing sheet.

The name "point" speaks for itself - they are separate points for the entry of air flow into the under-roof space. On slopes of large size, there can be quite a lot of them, it depends on the type of coating and other factors of influence.

There are several types of point aerators:

• pocket type, represent a raised section of the roof, decorated with an outer casing with a protective cover and a grate
• valve type, which is a ventilation pipe vertically installed on the roofing to rise above the snow layer in winter

The choice of the type of device is determined by climatic features and the type of roof. In addition, the angle of inclination of the slopes is taken into account.

Ridge aerators

The ridge aerator is a continuous ventilation duct running along the upper section of the roof in the longitudinal direction. It is created from separate fragments of 0.5-1.2 m, from which a channel of the required length is collected.

Ridge aerators are highly durable - they can serve for 40-60 years. From the outside, the structure is almost invisible, as it is covered with roofing material. The entry and exit of air flows occurs from the end sides of the channel, located along the gable sections of the roof. The entire lateral surface of the channel is open and connected to the under-roof space, which ensures plentiful and efficient ventilation.

For soft roof

Needs aerators more than any other species. It is tightly laid on the carpet, which increases the possible contact with a wet surface and creates an increased risk of destruction of materials.

The design of aerators differs little from all other types - both point and ridge devices are used. The difference is in the type of support pad - it is flat, often installed under shingles of soft tiles to increase the waterproofing effect. If the roof slope is small, use high valve structures. For steeper slopes, pocket-type installations are suitable.

For metal tiles

Aerators for metal tiles are part of the components (or additional) elements. wavy, so for a hermetic installation, you must have landing pad, exactly repeating the relief of this material.

Manufacturers complete all types of metal tiles with both point and ridge elements, which allow organizing high-quality and sufficient ventilation of the under-roof space. Between the platform and the canvas, a gasket made of special rubber is usually installed, with an additional layer of sealant to ensure complete isolation from moisture.

For corrugated board

Like a metal tile, it has a relief surface, which complicates the tight fit of the aerator sole to the canvas. Therefore, most often, ventilation is performed by forming an air gap on the eaves line with the possibility of free movement of air to the ridge aerator.

The necessary gaps are provided both by the relief of the material itself and by the counter-lattice that carries the coating web. Usually dot elements are used only on separate sections of the roof of a complex configuration that do not have communication with a common under-roof space.

Calculation

The easiest way to calculate ridge aerators, since you only need to measure the length of the ridge and count the number of segments. Calculation of point aerators is made on the basis of the following conditions:

• minimum quantity - one element per 100 m 2
• the distance between adjacent aerators should not exceed 12 m

Based on these requirements, the number of ventilation holes. Additionally, the configuration of the roof, the number and direction of slopes and other elements relative to each other are taken into account. Sometimes the calculation turns out to be too complicated, then online calculators come to the rescue, allowing you to get an answer in a matter of seconds.

Mounting

Installation of aerators is carried out by inserting into the roofing sheet and forming a passage to the insulation itself. The size of the window must match the diameter of the pipe with some tolerance. After installing the pipe, the installation of the sole is carried out, which consists in sealing and fixing it on the roof surface.

Ridge aerators are installed in the process, since they require some change in the composition of the truss system. Separate segments are laid end-to-end and connected, after which they are covered with a soft roof. On the metal tile there is a special additional element that performs the function of an aerator, the installation of which is much easier.

The operation of aerators is not difficult and consists only in periodic cleaning of dust and small debris penetrating with wind currents or as part of melt water. Otherwise, aerators do not require any special care and perform their tasks on their own.

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, install soft cover roofs are required 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 and 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 pressure difference between inside and outside, draws wet vapors out from under the roof structure.

This is most relevant for attics and warm attics, since in the cold space under the roof, natural air circulation occurs 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 efficient air circulation inside the roof structure, it is important to install such ventilation system with the required number of its individual elements, which is calculated depending on the area of ​​\u200b\u200bthe roof.

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 a corner piece with evenly spaced holes, covered with protection from 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:

1. 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;
2. Ridge tiles are laid along integral edges;
3. With the help of roofing nails or screws, a ridge aerator is mounted from separate parts, which should ultimately be an integral functional structure;
4. At the next stage, this structure is covered with ridge tiles: in this case, the petals of the coating are overlapped;
5. 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 at the highest 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;
• on the last step 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 the structural elements of the 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 carry out the correct installation of 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 key features each fixture.

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, 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, a very important element on the roof, it can be mounted on roofs with different 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 total area 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:

1. Roof dimensions;
2. The amount of moisture (in the room);
3. 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 that gets under the roofing from the room;
• 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:

1. Helps to remove moist air outside;
2. 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:

• Will fill the roof 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:

1. Ventilation of the space under the roof (part of the ventilation related to the entire structure);
2. 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 the latest technologies and the use of all the possibilities of roofing material, this problem 100% resolved.

Even at the design stage of a building, it is important to pay special attention to the 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 the latest models of a roof aerator is the TechnoNIKOL eco roof aerator 160x450 mm, which consists of 3 parts. Its design has been carefully thought out and allows:

1. Remove all existing excess moisture from the entire roofing pie;
2. Increase the service life of roofing;
3. 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, 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 surfaces 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 high humidity for human health, because 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 optimal solution to prevent such conditions, a roof aerator is considered.

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. In flat roofs, they are installed, evenly distributed 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

The aerator by design 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

Roof aerators are elements designed to remove excess water vapor pressure from under the roofing. Usually used in ventilated roof systems in conjunction with roll materials allowing partial gluing or mechanical fixation. Most often, such products are made from low-density polyethylene, as well as aluminum or stainless steel. Their installation has a great influence on the condition of roofs during their operation and extends the service life of structures.

There are several reasons why roof aerators should be installed on flat roofs:

• to remove water vapor that rises from interior spaces buildings, is absorbed into the materials and eventually leads to the appearance of cracks and the gradual destruction of the screed, and also contributes to the development of fungal infections;
• to prevent the formation of condensate on the surface of the waterproofing layer;
• to relieve pressure inside roof structure, caused by the evaporation of moisture when the temperature rises, because its excess leads to the appearance of bubbles, delamination of the roofing carpet and the appearance of other defects on the surface of the soft roof.

Aerators are different, they differ in the material of manufacture, size, modifications and principle of operation. It is necessary to select the diameter and number of such elements taking into account two main criteria: the roof area and the technical characteristics of the devices. These calculations are made at the stage of designing the roof and the entire building.

Varieties and design features of roof aerators

There are several types of aerators for soft roofs, which you can buy in our store, and at the best price:

Point aerators for a flat roof - are a pipe with a diameter of 6.3 to 11.1 cm. From above it is protected by a cap or "umbrella" to prevent water from entering it during precipitation. Point aerators for pitched roofs - are made in the form of “ boxes” painted to match the color of the roofing.

Continuous - they are placed along the ridge of the roof. They are produced in the form of ridge elements or air-permeable, but moisture-resistant ventilation tapes. Used on pitched roofs.

The price of aerators is in a fairly wide range. Today on sale there are simple budget models made of plastic for 300 rubles, and more expensive aluminum appliances with extended functionality almost three thousand.

People living in their private homes may face such a problem as the accumulation of excess moisture under the roof. This adversely affects the properties of the thermal insulation layer. There is a cardinal decision - dismantling of a roof with the subsequent replacement of all heater. This method is quite expensive and takes a lot of time, not to mention the fact that it can not be used in any season. The second way is to install a device such as a roof aerator.

What are roof aerators?

A roof aerator is a device that is designed to provide ventilation to the space under the roof. With it, you can avoid the accumulation of moisture, extend the life of the roof and the safety of its properties. This process called "aeration", hence the name of the device.

Aerators are designed to provide air condensation and are installed directly on the roofing. Since roof devices and coating materials vary, aerators have their own installation and operation features for each type.

Principle of operation

Roof mounted aerator

The principle of operation is based on one of the laws of physics, in which excess moisture can be evaporated - this process directly depends on the circulation rate of moist air. The air temperature outdoors and indoors varies greatly, in connection with this, it becomes necessary to provide diffusion processes in which different types of gaseous media are mixed. This can lead to a decrease in the temperature inside the premises, and moisture will collect under the surface of the roof. In contact with the external environment, ideal conditions will be created for its extrusion. It is on this law that the principle of operation of the device is based, in fact, it all comes down to using an aerator for ventilation.

Important! Aerators are both iron and plastic, so before installing them, you need to calculate whether the roof and corrugated board can withstand the load from the device.

There are several varieties that fit under different roofs. For example, aerators for metal tiles are sold, for shingles other. If there is no knowledge on how to properly install these devices, then it is best to use the services of a wizard.

Pitched roof aerator

The pitched roof has a sloping surface. However, often the space in the attics becomes impassable and often resembles a warehouse. It follows from this that the need for insulation and installation of additional ventilation disappears completely. The optimal angle for this roof is usually between 30 and 50 degrees. On a pitched roof, snow does not actually accumulate, since it simply rolls down, but there is an undesirable load from the winds.

Note! A roof aerator is usually installed exclusively on insulated roofs directly above residential premises.

Installed aerators on a pitched roof

The supporting structure consists of timber rafters and battens. The insulation is usually laid between the rafters and the inside, after which it is insulated with a vapor barrier coating. In the air of the living quarters, in any case, there is moisture, the coating protects the insulation from moisture. On the outside, a special film against moisture and water is arranged, which protects the insulation from rainwater and condensates.

At first glance, the design has no flaws, but not a single coating is able to absolutely protect the roofing pie. Consequently, moist air accumulates and stagnates under the roof covering, due to which wood rots and steel corrodes. Installing aerators allows you to deal with this problem, as the devices create fresh air circulation.

Important! For this type of roof, 2 types of aerators are installed: point and ridge.

Point-type devices are mounted at the highest point, approximately 150 mm from the ridge. Outside, the air is colder, and when it gets into the under-roof space, it becomes warmer, respectively, according to the laws of physics, it tends to rise up. The result is simple air circulation.

Flat roof aerator

In flat versions, the roof has a different device: the floor slabs are leveled using cement-sand screeds, after which the insulation is laid. Then another cement-sand screed is mounted on top of the insulation, or two layers of flat sheets of asbestos cement are used. The built-up roofing carpet is firmly bonded to the screed after installation. However, during operation, materials may experience temperature fluctuations in the external environment. The coefficient of thermal expansion for concrete, cement, asbestos and bitumen varies quite a lot, so undesirable stresses follow from this. Cohesion and bonds are broken, respectively, air bubbles appear.

Flat roof aerators

Important! Aerators on a flat roof are mounted under the built-up layers, which allows you to remove stress and remove bubbles. In this case, it is preferable to use a roof aerator for a soft roof or an aerator for a flat roof.

Aerators that are used for roofing of bituminous materials of a directed nature do not differ in special design features, they consist of the usual elements:

• skirts;
• tubes;
• cap.

As a rule, aerators are made of high-strength polypropylene and withstand temperatures ranging from -50 to +130 degrees Celsius. Similar devices for a roof area within 80–100 m² should be located at a distance of 12 meters from each other.

Advantages and disadvantages

The main advantage of the devices is the ability to remove most of the moisture, which helps to avoid damage to the roof. This leads to the durability of materials and even protects the roof from leaks. Removing moisture can cause the metal shingles to not corrode or cause the problem to show up later. Plus, a dry roof retains its thermal insulation properties better. This will make it possible to significantly save on heating. It also helps to maintain a favorable microclimate in the building, which, in turn, helps to avoid the appearance of fungus and mold.

Also aerators are pretty a budget option to eliminate unwanted moisture in the roofing cake. In 2018, their cost varies from 300 rubles to 5,000 rubles apiece. There is a huge variety of aerators on the market today. different firms both foreign and domestic ones.

Important! The device is suitable for installation on any type of roof, compatible with all types of roofing materials. Installation can be carried out on roofs of complex shapes, where there is a height difference. The aerator can be mounted at any stage of construction or already during the operation of the building. Installation does not require special skills or tools.

Among the shortcomings, one can single out the inability of point aerators to provide proper ventilation of the entire roofing, this can lead to the appearance of a zone where air will stagnate.

Classifications

Aerators have many classifications. Below is the most popular:

Top Models

There are many devices on the market designed to remove moisture under the roof. Below are the most popular in Russia.

"Polyvent"

Aerator "Polyvent" is a line of devices for ventilation of the roof space. It contains both ridge and point aerators. The manufacturer of this line is the TechnoNIKOL company from the Russian Federation.

Docke ("Deke")

The products of this German company are designed for installation on horizontal skates. The ridge aerator "Deke" provides excellent ventilation and has unsurpassed German quality.

Airridge Felt

Aerators from the Finnish company SKTuoteOy. They are made using new technologies, which helps to avoid deformation of the ridge, and the unique arrangement of air grooves provides the best ventilation and prevents moisture from entering inside from atmospheric precipitation.

Tegola

Special aerator "Tegola" is a device Russian production, perfectly protects from moisture and provides excellent air circulation.

vilpe

Devices from the already well-known Finnish campaign SKTuoteOy. Available in a wide range of colors, the devices are characterized by ease of installation, corrosion protection and durability.

Ridge Master Plus and Hip Master

A couple of American companies that produce mainly high quality ridge aerators that are good at eliminating condensate and regulating the microclimate.

Ridge Master Plus and Hip Master aerator

Aquasystem

The KTV Aquasystem aerator is a chiseled type model from the Russian manufacturer Stroymet. It has proven itself in the market, it is simply mounted and functions properly for many years.

Installation of roof aerators

Each type of aerator has its own characteristics and installation methods, which are described in detail in the instructions for them.

Installation of ridge aerators

This type of aerator is the easiest to install, but due to the fact that it must be installed along the entire length of the ridge, you need to have the exact dimensions of the roof and correctly calculate the number of devices. They are recommended to be installed on a roof with a slope of 12-45 degrees.

Important! Such an aerator is mounted exclusively on a ridge, which ensures excellent air circulation in the attic.

Operating standards:

• Be sure to have holes in the overhangs to facilitate air flow.
• Installation of devices along the entire length of the ridge so that they form one system.
• Tiled skates are usually placed on top of the aerators, thus masking the devices and not spoiling the appearance of the roof.

The installation technology is carried out in compliance with the following steps:

1. With help circular saw a groove is cut at the base for ventilation and other needs of the system. If only 1 aerator is installed, then the hole should be located on the top of the ridge, if two - on the sides of the ridge. The slots are made in such a way that they break off 30 cm from the edge of the ridge.
2. Ridge shingles should be located on the sides of the ridge.
3. All segments must be stacked with each other, using the example of the details of the designer. The aerator is attached to the roof using special elongated nails or screws.
4. The profile of the aerator is covered with tiles. Petals are attached with an overlap.
5. After that, it is necessary to seal the ends of the aerator where it comes into contact with the roof.

Installation of point aerators

If it is not possible to install ridge aerators, then they can be replaced with point ones. They need a few more, but you also need to calculate the area for mounting them.

As a rule, they apply:

• On the roof coverings where the slope is less than 12 degrees, or on flat structures.
• For greater efficiency of the ventilation system or as a supplement.

1. A hole is cut, which should fit in size with the internal gap of the channel next to the aerator.
2. After that, the aerator skirt is mounted, which is fastened with special roofing nails or other fasteners.
3. The top of the skirt is glued with waterproofing materials.
4. The skirt is glued with tile shingles, trimmed a little at the points of contact.
5. An aerator mesh is put on over the skirt, after which it is fastened with self-tapping screws. After installing the cap and also fix it with fasteners.

Thus, using tips and instructions, you can quite successfully install aerators of any type of model on different types roofs Devices will improve the situation with moisture in the house, extend the life of the materials from which the roof is made.