Installation of a soft roof does not tolerate trifles. Sometimes, thinking to save money on such a seemingly unnecessary detail as roof ventilation, the developer is faced with a lot of troubles. The roof begins to leak, the house smells damp, and icicles accumulate on the eaves. And, the apotheosis of everything, is the transient destruction of expensive roofing material. Such troubles occur because moisture penetrates into the cake of a soft roof, seeping into the insulation, roof structures and the bituminous coating itself. The problem can be solved by installing artificial ventilation ducts on the roof - aerators. Air will circulate through them, drawing out excess moisture and drying the inner cake of the structure.
Thus, the installation of aerators on soft roof- the process recommended by specialists, and in some cases (above attic floor, for example) - mandatory, preventing its damage and ensuring a comfortable stay in the house.
It is clear that aerators provide ventilation and drying roofing cake from moisture. But where does it come from? After all, manufacturers initially positioned a soft roof as a sealed one. Moreover, in the composition of the roofing cake 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, ultimately, human breathing. According to research, every day in a house where a family of 4 lives, 2-4 liters of water vapor is formed, part of which accumulates in the under-roof space.
When warm steam comes into contact with a cold surface (during sudden temperature jumps outside-inside), it condenses. As a result, the smallest droplets of water begin to soak any structures and materials that they can "reach". First of all, these are rafters, lathing, insulation.
Another way of moisture penetration is from the outside of the roof. Warm steam, accumulating in the attic, heats up the roofing from the inside. In winter, the snow on the roof begins to melt. Ice crusts are formed, 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 coating becomes unusable.
On a soft roof, the consequences of excess moisture drinks manifest themselves quite quickly. You may notice:
All this leads to the destruction of the structure of the roofing material and the occurrence of leaks.
How to prevent moisture from settling on roofing surfaces? Or dry structures already saturated with moisture?
The laws of physics will come to our aid. Moisture can be removed by evaporation, which occurs when moving (circulating) air streams. Since there is a significant difference between the internal (in the house) and external (outside) pressure indicators, it is enough to ensure the process of communication of the two media for air circulation.
If the attic is cold, then effective ventilation can be provided quite simply - through dormers, loose fit eaves, crevices in the skate. For warm attics and attics, this solution is not suitable, since in the cold season, unregulated ventilation will reduce the temperature in the room.
In such houses, the most acceptable use is roof aerators- ventilation ducts connecting the under-roof and over-roof spaces. After installing the aerator, due to the pressure difference, a forced draft is created in its pipe, which draws out wet vapors from under the roof.
Highly important point: in order for the process of drawing air through the aerator to become possible, it is necessary to provide a supply of fresh cool air in the overall system. Otherwise, the air masses will not circulate. For this, ventilation ducts are installed 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 properly equipped ventilation, in just 1 hour the air flow passes through the roofing cake 2 times, drying and ventilating it.
Accordingly, having installed aerators for a soft roof in the right amount, you do not have to worry about the dryness of the coating and insulation. Therefore, it is more correct to start installing them 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 appearance of irreparable defects in the roof (swelling, destruction of the material). Fortunately for many developers, using aerators can not only prevent moisture build-up in the new roofing cake, but also drain the old roofing already saturated with moisture.
For soft roofing, aerators are used made of shock-resistant plastics that can withstand temperature extremes, corrosion, and UV rays. Depending on the design features, purpose and method of action, there are 2 types of aerators: continuous ridge and point.
The ridge aerator is referred to as continuous ventilation systems, since it is installed along the entire length of the ridge to aerate the entire under-roof space. In appearance, the structure 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, usually on the slopes, less often on the ridge. Each such aerator is a ventilation pipe, protected from above by a cap of various configurations. Usually general form the design resembles a "fungus" or "box".
The point-like 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 rib.
Differences in the designs of the available types of aerators also suggest a significant difference in the technologies for their installation.
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 °. Moreover, it is mounted only on the ridge, providing air circulation in the attic space.
Usage rates:
Installation technology:
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:
In addition to the ridge aerator, several point analogs can be used. Such aerators are used:
Usage rates:
Installation technology:
This is how it looks:
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 difficult work, 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 settling, the appearance of mold, mildew and mustiness are prevented. All this has a positive effect on the duration of the operation of wooden structures (rafters, lathing, sheathing), the work of thermal insulation, and the microclimate of the dwelling.
Roof aerators are necessary to remove moisture and water vapor that accumulate in the under-roof space. Until recently, an almost annual, seasonal repair of soft roofs was necessary. Mechanical damage to the roofing carpet occurs for various reasons. Installing rooftop devices such as poles and antennas, cleaning the roof from ice and snow are some of them. Finding a crack in a soft roof is not an easy task. The damaged area must be opened and cut out. Also organize the drying of the base gas burners... Then, a patch is put on the area prepared in this way. The installation of aerators minimizes the listed works on the restoration of the roof carpet.
Aerators are installed on soft ventilated roofs. These devices are also known as deflectors or wind vans. They are used on flat and pitched roofs.
The main purpose of the devices is to remove moisture from the interroof space during the operation of the roof. When repairing breathable flat roofs, aerators are used to sanitize (dry) old layers.
They are among the most effective ventilation systems, with the help of which moisture and condensate are removed from the under-roof space. The material for the manufacture of these devices must be resistant to corrosion and resistant to ultraviolet radiation. It can be acid-resistant stainless steel or weather-resistant and impact-resistant polypropylene.
Soft roofing is widely used in residential construction during construction multi-storey buildings and cottages. For the construction of administrative, public, industrial buildings one or another type of soft roof is almost always used. This coating has many advantages, but not without its disadvantages.
One of these disadvantages is the accumulation of condensation and moisture in the insulation and screed. As a result, bubbles form on the roof surface, worsening thermal insulation characteristics... This leads to increased heat loss throughout the building and the growth of mold and mildew.
Further, the destruction of the waterproofing carpet and screed occurs. When moisture enters the under-roof space, the pores of the sand-cement screed are filled with water. At negative temperatures it freezes and increases in volume, which leads to the gradual destruction of the roofing material and the appearance of ruptures in the insulation.
To avoid these negative consequences and eliminate one of the disadvantages of a soft roof, the aeration method is used - drying of the layers of the roofing during the operation of the building.
Moistening of the layers of the soft roof occurs in two directions. First of all, it is atmospheric precipitation: rain, snow, fog. Water seeps through even the smallest cracks in the coating and condenses in the under-roof space. The result is water leakage into the premises, destruction of the roofing carpet.
Secondly, excess moisture appears in the form of vapors penetrating through the floor slabs from inside the premises. It would seem that processes imperceptible to the eye lead to a rather rapid occurrence of defects in the roofing layers and their destruction.
The principle of operation of the aerator is based on the existing constant temperature and pressure difference in the under-roof area and at the outlet, closer to the external environment. Humid air from areas with high pressure and temperature rises to the area with lower values.
Thus, air draft arises in the aerator pipe, which removes excess moisture. The principle of operation of the deflector determines its main functions:
Thus, aerators on the roof allow the covering to be used for a long time without reconstruction.
The design of the aerator on the roof is simple: a pipe with a base for fastening and a cap (or umbrella) on top, which can have different shapes. The cap is needed to protect against atmospheric moisture penetration into the pipe, birds and insects. By design features the following types of deflectors are distinguished:
Spot aerators on the roof are installed based on the estimated number. On a flat roof, they are placed evenly over the entire area, always in places of the greatest elevations and at the joints of heat-insulating plates. Usually at 100 m? install one aerator.
On pitched roofs, the deflectors are mounted as close to the ridge as possible, at a distance not exceeding 0.6 m from it. The number of devices is calculated depending on the area of the roof and technical characteristics specific aerator.
Spot models in the roofing carpet are mounted using a specific technology. For each unit, a hole is prepared equal in diameter to the aerator pipe and completely passing into the insulation layer. A deflector pipe is installed in the hole, which is attached to the roof with self-tapping screws. The junction is hermetically sealed with the obligatory implementation of an additional layer of waterproofing.
Continuous aerators on the roof are installed in cases where additional strengthening of the air flow is required. This is required for complex roof structures and long slope lengths. When installing continuous structures, it is also necessary to carefully seal up the joints of the roof and ventilation devices. The installation, fastening and sealing principle of turbine aerators is the same as for point deflectors.
There are many modifications of aerators on the market. Their cost fluctuates in a wide range. The price for the simplest model is 260 rubles. About 3 thousand rubles. there is a turbine aerator. The choice depends on many parameters: the area and structure of the roof, the purpose of the building, the required exhaust power.
In any case, the cost of the exhaust device will pay off many times over, since its installation reduces the periods of roof repairs.
The aerator is installed both when installing a new roofing carpet, and when repairing an existing one. Moreover, new layers can be placed on top of the old ones, making work to clean the surfaces from contamination. The aerator will dry the layers already in use.
As you can see, this simple device is almost irreplaceable. By installing aerators on the roof, you will extend the life of the coating and minimize the frequency of repairs.
A common problem in roofing structures is the accumulation of moisture and condensation. A device called an aerator will help to solve it. It can also be called a weather vane or deflector. What is its functional purpose?
They consist of three points:
Now it is worth finding out, due to what reasons, the increased moisture content of the coating occurs.
The most common and widely used is the soft roof. Especially when it comes to industrial and civil buildings. It consists of several layers called pie:
Of the items listed above, the most susceptible to moisture accumulation is vapor barrier. This can happen from the influence of various factors:
In the first case, dampness appears if there is a violation of the coating. Different climatic conditions can lead to direct penetration of moisture and its accumulation from moist air.
In the second version, the rising steam settles on the vapor barrier and cement screed in the form of condensate. In a wet vapor barrier layer, thermal conductivity increases within 30-40%. In addition, fungus and mold form in the closed, unventilated space of the cake. (We recommend reading for a more complete disclosure of information the article on the protection of walls from various types of destructive effects.?) In addition, this trouble, the dampness of the roof can lead to other negative factors.
roofing aerator - weather vane
A roofing aerator for a soft roof will help you to avoid high humidity, as well as destruction and defects with it. It is only necessary to decide on the choice of the device.
There are a lot of materials from which the roof deflector aerator is made, but the most effective of them are plastic and stainless steel. They are resistant to the following factors:
No matter what material the roof roofing aerator is made of, its main task is to remove condensate, weather moisture and ventilate the roofing space. Various sizes and modifications provide a roofing aerator, a photo of some of them is presented . They can be of various sizes and modifications.
The most the best option for soft roof is a roofing aerator technonikol 160x460mm, the photo shows that it consists of three parts. Its design provides:
One of the newest models is the eco-roofing aerator techno-nicol. It not only meets all the requirements of a "breathing" roof, but is also made from environmentally friendly raw materials.
If you want to get quality roof with a long service life, you should install the TechnoNIKOL roofing aerator. Its price fluctuates depending on the design and modification. You can always pick up the best option at cost.
First of all, you should decide on the number of ventilated deflectors. To do this, you need to know the surface area of the roof and the technical data that the vane roof aerator provides. If the roof plane is inclined, they should be evenly spaced in the highest areas.
If the configuration of the coating is simple, then the norm provides for one roofing aerator per 100 m², you need to buy the calculated amount for installation.
An important point! The distance between the ventilation pipes should not be more than 12 meters.
You can install roofing aerators yourself, but for this you need to have minimal construction skills. If there are none, then it is better to turn to the services of specialists.
It can be carried out both during the arrangement of the roof, and already on the finished structure. In the first case, they must be laid down by the project. If the premises are known to have high humidity premises such as a bath or sauna. Ventilated outlets should be provided at the design stage of buildings. Such projects should only be conducted by special design organizations... In the second version, the roofing polyvent aerator is installed in the following sequence:
IMPORTANT! If the vapor barrier layer is wet, it must be replaced with a dry one so that it meets the thermal insulation standards.
The roofing aerator for metal tiles has a different design and is mounted on both sides of the ridge with an indentation of at least 60 cm. It is advisable to carry out installation work in the summer.
In order to operate a soft roof for a long time and, just as importantly, safely, 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 not cheap at all. Installing aerators on a soft roof is one of the important elements, but not everyone uses it. We want to show the need for its device.
Installing aerators on a soft roof can solve the problem. The air circulating through these artificial ventilation ducts prevents the accumulation of condensate, respectively, protects wooden elements from decay, mold formation, dries out the layer of insulation of the roofing pie, and more.
Thus, the presence of ventilation aerators for a soft roof protects it from damage and guarantees comfortable living in the house.
Even the presence of vapor barrier and waterproofing in the composition of the roofing cake cannot completely block the access of wet vapors, human waste products, from living quarters.
When warm steam comes into contact with a colder surface, then, as is known from the course of physics, it begins to condense, forming the smallest drops of water. They settle on various materials and structures (rafters, insulation, etc.) and impregnate them.
Moisture can get into the under-roof space and outside. The warm air accumulated in the attic warms up the roof from the inside, which causes the snow cover on the roof to melt in winter. As the temperature drops, ice forms in places. Under appropriate conditions, it also melts. Through the joints of the roofing material, water penetrates inside, and the roof, thus, begins to flow.
The roof covering also suffers. When the temperature drops, moisture entering 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:
Excess moisture from under the roof is removed by evaporation, which becomes possible due to the movement of air flows. The pressure readings inside and outside the house are very different, so the air will begin to circulate as soon as the two media are communicated.
Effective ventilation for a cold attic is fairly easy. It is enough to restrict dormer, crevices in the area of the ridge or loose fit of the eaves overhangs.
In the case of warm attics or attic, such a solution is unacceptable, since in the cold season, unregulated ventilation will cause a decrease in the temperature in the premises.
The best option for them are roofing aerators for a soft roof (photo below), through which the spaces under and above the roof are connected. In the passage pipe of the aerator for shingles a forced draft is formed, caused by the pressure difference, which helps to draw the wet vapors outward.
shingle aerator
In order for the ventilation of the roof from the soft roof to function normally, air supply from the outside is necessary. They come through the ventilation gaps (air vents) provided on the eaves. The air received from the street in the process of passing through the warm attic heats up, then rushes up - directly to the roof. Draft formed in the roof aerator , discharges the air flow through the passage pipe and throws it out.
Installing aerators on a soft roof in the required amount ensures dryness of both the roofing and the insulation. It is noteworthy that ventilation of a soft roof through a roofing aerator can prevent the accumulation of moisture under the new roof, as well as dry the old cake, which has already been saturated with moisture.
There are three types of installations working for ventilation of the under-roof space:
It is important to note that each type of roof covering requires a specific material aerator. Let's look at a few examples. Let's start with shingles.
The design features suggest significant differences in the approach to installing aerators on a soft roof.
Recall what an aerator is (see the photo). This is an artificial ventilation duct that works both to draw moisture out from under the roof and circulates air.
Consider, separately, how each type of aerator, ridge and point, is mounted.
The device of the ridge option is extremely simple. It is suitable for roofs with a slope between 12 and 45 °.
The mounting scheme of the point version is somewhat more complicated:
One of the first models in the family of solid devices is the ridge. Let's start with him.
Ridge Master models can only be mounted on strictly horizontal skates, They are not recommended for use on sloping ribs. For these cases, the Hip Master is suitable. Let us note some of the advantages of this manufacturer's ventilation aerators.
Technonikol also offers different options point models. Here is some of them.
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 cake. At the same time, it should be dry, regardless of the materials used for finishing, be it metal, slate, ondulin 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 soft roof aerators. Consider what they are and how they are installed.
Soft roof aerators
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, the masters always try to make it as tight as possible, they put various waterproofing and vapor barrier materials under the roofing, which, in theory, should provide reliable protection.
Why does condensation occur under the roof
The thing is that in a residential building there are various processes associated with human life... People breathe, prepare food, shower or bathe. And during all these processes, the air in the house is saturated with steam - in other words, it becomes humid. Warm air rises and enters under the roof if it cannot escape through the ventilation hole. Above, 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 the most hard-to-reach places through microcracks.
On a note! During the day, a person exhales about 1 liter of liquid in the form of vapor into the air. Adding to this amount all the water that gets into the air during cooking, washing floors or taking a bath, you can get a huge figure - up to 15 liters of water gets into the air in the house during the day.
The accumulation of condensation under the roof poses a certain danger to all materials that make up the roofing cake. Wooden elements begin to soak in 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.
Condensate is flowing from the metal tile
Metal elements (for example, fasteners) inside the roofing cake, due to the high level of humidity, begin to corrode and gradually deteriorate. If the water in the under-roof space, accumulated during the summer, freezes in winter, it can easily damage some structural details (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.
Condensation on the inside of the underlay film
Also, the effect of moisture is destructive for 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 structural elements roof and outside. During heavy rains, melting snow, water can still find a loophole and get under the roof or into the roofing cake, even if its outer surface is well sealed. It is not worth excluding this option of additional "humidification".
On a note! From the point of view of vulnerability, any soft roof suffers the most from excess moisture under the roof.
As for the soft roof, moisture is actively accumulating under it in the insulating layer. At the very least, this can cause the roof to bubble, especially when it comes to a soft bitumen covering laid on a flat concrete roof. In this case, bubbles can occur here's 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 pliable in hot weather). When the material is heated above 50 degrees, the plasticity increases, and the quality of adhesion of the coating to the base depends at all not on adhesion at all, but on the viscosity of the components or mastic that make up the material, to which the coating was glued.
Roofing defect - formation of blisters in the roofing carpet
There is a closed, sealed space between the vapor barrier and waterproofing in the roof pie. As the temperature rises, the pressure in this area rises to 2-2.5 t / m 2. The waterproofing rises, lifts the roof covering, and thus bulges are 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 drain the heat and waterproofing layers and prevent the accumulation of condensation.
Ridge aerator for soft roofs
A roofing aerator is a structure that serves to remove moisture from under the roof, including that which has formed in the roofing cake itself, and not just in the house. This element can be installed on a variety of roofs with 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.
Scheme of operation of the ridge aerator
Inside the installed aerator, traction is created due to the formation of the area low pressure due to external wind flows and pressure differences in the space under the roof and the street. The main functions of this structure are as follows:
Aerator installation diagram
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 represented as ridge bar with lattice on the sides. The first aerator is installed on the roof slope, and its second variation is installed along the roof ridge.
Ridge ventilation tape
On a note! The aerator can be installed during construction or on a finished roof.
Aerators may differ from each other in materials of manufacture and design features. Most often, plastic products are used, however, there are also metal (steel) products on sale, which are usually mounted on metal roofs. In fact, all aerators are resistant to sunlight, rust, and temperature extremes.
Aerator for shingles
Table. Types of aerators depending on design features.
The installation of aerators on the roof is necessary, since their presence prevents the destruction of the roof carpet under the influence of moisture that forms in the under-roof space.
The desire to save money on the arrangement of roof ventilation leads to many problems: first of all, the roof begins to leak, icicles collect on the eaves, and the smell of dampness appears in the house. As a result, the expensive coating material degrades very quickly. The fact is that moisture gets into the thermal insulation layer and elements rafter system.
The installation of a roofing aerator, which is an artificial ventilation duct, can solve this problem. Air circulates through it, drawing out excess moisture and drying the cake of the structure from the inside.
Manufacturers of topcoats for roofs position their materials as airtight, so where does moisture appear in the roofing cake, but does it contain layers of vapor and waterproofing?
Unfortunately, the presence of wet vapors is present in any apartment or house. They are formed as a result of cooking, water treatment, washing and breathing of people. According to scientific research, it was found that in houses where a family of 4 lives, at least 2 liters of water vapor are generated per day. It partially settles in the under-roof space.
Condensation will form when warm steam comes into contact with cold surfaces. As a result, water droplets impregnate the materials and structural elements of the roof, into which they can penetrate. First of all, the pairs reach the insulation, the rafter system and the sheathing.
Another way of moisture penetration is the outside of the roof. Warm steam accumulates in the attic and heats the inside of the roofing. The snow that collects on the roof in winter begins to melt. When the air temperature drops, ice forms on the roof, and under certain conditions it can also melt. Water penetrates into the smallest gaps between the joints of the coating and leaks form on the roof.
The roofing material begins to gradually become covered with microcracks, into which moisture penetrates. In freezing temperatures, it freezes and tears apart the roof trim. Cracks grow more and more and turn into through cracks. As a result, the roofing becomes unusable.
This device consists of a pipe with a diameter of 6-11 centimeters, made of stainless steel or polypropylene. A cap is installed on top of it, which protects the fan from the penetration of sediments inside. The aerator helps to dry the thermal insulation layer and accelerates the evaporation of condensate.
These devices are used in regions with different weather conditions, since they have good performance parameters and can withstand temperature changes in a wide range, ranging from +90 to -50 degrees.
Roofing aerator for metal tiles and other types of roof coverings is intended for the following purposes:
The principle of operation of aerators is the appearance of a draft in the pipe, which occurs due to the low pressure created by external air currents.
According to the design features, there are several types of roof fans:
When choosing a model of an aerator, the slope of the roof is taken into account. Typically, this information can be seen on the product packaging.
A certain type of device is used for different roofing coatings. Aerators made of weather-resistant and impact-resistant polypropylene are suitable for soft materials (read also: “How the ventilation of a soft roof works - important features roof "). Usually they are placed equidistant from each other at the highest points of the roof covering or at the junction of thermal insulation plates.
Such a device performs the following functions:
The fan housing of the aerator for metal tiles is made of materials that are resistant to corrosion and aggressive environments, to the effects of different temperatures and ultraviolet radiation. Polypropylene and stainless steel meet these requirements.
For coverings from corrugated board for the body of the deflector, the same materials are used as for metal roofs.
Installation of this type of device is simple, and there is no need for complex calculations. The ridge aerator is placed along the entire length of the ridge. Experts recommend using this product for roofs with a slope of 12 to 45 degrees. It is mounted exclusively on the ridge and thereby provides air ventilation in the attic space.
Conditions for using the ridge aerator:
Arrangement of a ridge aerator for metal tiles or soft roofs is performed in a certain sequence:
Aerators of this type are installed:
Conditions for using the spot aerator:
Roof point installation technology:
Similarly, other point aerators for the roof are mounted according to the calculation made, which will eventually form a single ventilation system.
As you can see from the above information, the installation of such devices is not a difficult job - inexperienced self-taught craftsmen can easily cope with it.
Due to the presence of aerators on the roofs, water vapor is removed from the roofing cake, the formation of condensation, the spread of fungus and mold, and an unpleasant odor are prevented. The absence of these unfavorable factors has a positive effect on the duration of the service life of wooden elements of the roofing structure and on the state of the microclimate in the residential and utility rooms of the house.
For installation and operation, you need to use special tools. We propose to consider what and how a roofing aerator works for soft roofs, corrugated sheets and for tiles, what is the price and what brands of deflector are most popular now.
Roofing deflector, TP-71.100 aerator is a device that is installed under the roofing material on the roof, see photo.
Photo - Roofing aerator
Its main function is to fill the roof with fresh air, while removing moisture, musty air, dust and gases from the ventilation cushion. If you do not use this device, then there is a high probability that over time the roof will sag and begin to collapse from the inside. The deflector is necessary not only in structures where there are slopes, many craftsmen recommend installing it in flat roofs made of tiles or profile decking for organizing surface drying and ventilation.
Photo - Roof aerators on a flat roof There are different types installation of aerators, types and designs, depending on the roof slope, needs, climatic features of the region, you need to select a device.
Benefits of installing aerators:
Video: installation of a roofing aerator
The technology can be used for work natural ventilation or forced. Natural is the opening of certain areas of the roof, where fresh air enters or the sun's rays enter. With forced, everything is a little more complicated, here aerators are installed all over the roof according to a certain scheme, when they come into operation, the air begins to be distilled from one device to another. The roof installation standard recommends the second option for installation, which is more efficient and effective.
Photo - Roof aerator design Consider forced aeration. The entire surface is flat or shed roof in a certain sequence, you need to install aerators. In addition to the devices themselves, a tubular outlet must be provided for each of them. This roof element is responsible for air circulation. The calculation is carried out according to the following principle: for every 50 centimeters, an outlet of the aerator is installed, which must be connected to the next one using a pipe. In addition, the weather vane must also be installed in the height of the roof, at the joints of insulating films or coatings.
Photo - Ridge aerators For a roof with slopes, the system is a little more complicated, in particular, installation is carried out only at the upper points of the roof, at a distance of 50-60 centimeters from the ridge. This is necessary for the most efficient removal of humid air. In addition, at this point the most highest temperature throughout the roof space. The installation step is calculated taking into account the distance between the weather vane from 50 cm to 70 (depending on the size of the roof). Sometimes the arrangement is staggered to help improve circulation.
A homemade aerator is a very real design, it can be made without special skills or materials. Basic requirements for the design of the weather vane:
After the manufacture of pipes and aerators the right size, a hole is made in the roof, the diameter of which coincides with the hole of the pipe. In addition, experts also advise to insulate this area. The lower part of the tube and the corner of the gutter Ф100 are covered with special mastic, sealant or oil and tightly fixed at the base of the branch pipe. To minimize the likelihood of the roof getting wet from the inside, filling the aerator pipes with water or dust, a so-called skirt is installed on the top of the aerator, which protects the weather vane from external factors. Insulation is reinstalled on top of the entire structure.
Photo - Dry filler for aerators Periodically, it is necessary to remove dirt and stagnant water from the aerator pipes. To make this possible, a valve is provided in the design, with which you can easily remove the top layer of roofing material covering the deflector.
The installation of the deflector must be approached very seriously. It is important to choose the right skate or flat aerator... The products of Technonikol have proven themselves well - they are an ultra light and durable metal roofing aerator.
Photo - Insulation of the aerator You can buy a roofing aerator in Russia, Belarus or Ukraine in any store where additional roofing materials are sold. The price list is based on open sources, when buying, we recommend that you check the cost with the sellers of the selected company:
Photo - Simple aerator The following brands of roofing aerators are now most popular: ALIPAI 110, VILPE CLASSIC-KTV, silicone MASTER ROOF d200-300, Belgian IKO Armourvent Special, Maxi-KTV (Maxi KTV), Sika membranes, ULTRA / ULTRA M (copper), POLIVENT-PREMIUM ... The cost directly depends on the footage of pipes, the number of aerators and the seller (manufacturer). Be sure to check the certificate of conformity and quality before buying, and also clarify the moment on the account of the return of the goods, if necessary.
