Bindings of natural ventilation on the pitched roof. Floor ventilation output. Independent ventilation arrangement will require special knowledge

A fairly simple question is, as determined by SNIP, the height of the ventilation pipe above the roof, often puts even confident designers in itself, what to talk about amateur builders who have planned re-equipment or capital restructuring of their housing. The question, meanwhile, is far from idle, since the foundatory characteristic depends on the height of the ventilation pipe over the roof - its performance in terms of moved air.

What is the regulatory height of the ventilation

The main law of the vertical pipe, no matter, ventilation or smoke, reads - the greater the height of the device, the higher the thrust in the pipe, respectively, more air is ejected by the system beyond the roof. Design specialists and most developers in the matter of calculating the height of the ventilation pipe over the roof are oriented into several fundamental documents:

Snip No. 41-01-2003, paragraph 6-6-12, regulating rise for chimneys;
Snip No. 2.04.05-91, defining design design exhaust systems in the old edition;
SP number 7.13130.2009 - Methodical recommendations and rules for the design of ventilation and air conditioning systems;
Snip No. 2.04.01 Determines the level of ventilation for sewering risers.

In the latter case, the method of determining the installation level of the ventilation pipe by the SNIPA positions is quite detailed:

On a flat roof, the lift of the exhaust pipe through which the sewage gases will be released, there must be at least 30 cm;
For the pitched roof, the height of the rack should be at least 50 cm from the point on the roof to the pipe cut;
On the roof, the surface of which is used to perform work or movement, the cut output of the ventilation system should be above the roof plane at no lower than 300 cm.

The output of the system of ventilation of the sewer rims, according to the bottom, should be removed from the windows and air intakes to a distance of at least 4 m, everything is quite simple and understandable, because it is a potentially dangerous for human health gases and evaporation.

Approximately the same approach is implemented in SNiP No. 41-01-2003 with the presentation of the method of calculating the height of the chimney pipe over the level of the skate beam or the horizon flat roof.

For your information! The method of calculating the height of the ventilation pipe over the roof of the private house in SNUP is not given, only general recommendations are given.

Developers of the Construction Conducts and Rules No. 41-01-2003 proposed in determining the excess of the ventilation rack is guided by a scheme for calculating chimneys. With one amendment, if the ventilation rack is installed on a single chimney line by removing up to 3 m, they must be installed at one level.

How to determine the necessary and sufficient height of the ventilation pipe

The absence of a separate technique to determine the height of the pipe of the ventilation system does not mean that such a calculation is not required, or it is not needed. The easiest way to make ventilation on a simplified scheme. If you follow the definitions of SNIVA No. 41-01-2003, the height of the ventilation exit must be:

On a flat roof - at least 500 mm;
For the pitched roof, the slice of the ventilation rack must be above the line of the skate of 500 mm by removing from the skate by no more than 1500 mm.

The output of the ventilation may be at one height of the skate if the removal does not exceed 3 m, otherwise the slice of the ventilation pipe should not be below the conditional line, carried out to the horizon down at an angle of 10 o. If there is a chimney nearby chimney heating, then smoke and ventilation pipe must be lifted above the smoke slice.

To understand how true such an approximation is, you can make an approximate calculation of the performance of the ventilation channel. For example, a heating boiler for 16 kW / h produces about 140 m 3 combustion products, influx fresh air Provided by a separation channel of the chimney with a cross section of 200-220 cm 2.

In order to provide the required 1.5-2 m 3 per hour of the multiplicity of air shift for residential premises in 60 m 2 with a ceiling height of 2 m, the flow rate is 150 m 3, that is, under certain conditions, the size and height of the flue and ventilation pipe is approximately comparable. Comparison is sufficiently conditionally, but it clearly shows that the techniques, at least comparable.

What affects ventilation performance

There is another way to determine the height of the pipe and, accordingly, excess over the roof coating of the roof of the house. This can be done using the air flow formula depending on the pressure drop. It is known that when lifting 12 m, the air pressure drops at 101 pa. The result will be valid only for the perfect ventilation system with an absolutely smooth inner surface.

In fact, for the practical calculation of parameters, heights and sections of the ventilation channel, you will need to consider several important conditions:

Air flow rate at the height of the installation of the ventilation pipe;
Air temperature on the street and indoors;
The shape of the channel section and surface quality over the entire height of the air duct;
Roof shape.

A practical measurement can be obtained by the expenditure coefficient of C. From its magnitude and from the pressure difference in the Earth and at the height of installing the output ventilation rack, you can calculate the real air consumption.

Or vice versa, knowing with and well-known air flow, which will have to move through the air duct for a specific volume of the room, you can determine the pressure difference and, as a result, the level of lifting the output of ventilation.

This calculation is quite difficult, therefore, we usually use the recommendations of the reference books and the design of ventilation systems, in which the approximate dependences of the air flow from the departure of the output tube are given for different options Roof designs and conclusions.

Recommendations for determining the height of the ventilation pipe on the roof in no way relate to the determination of the size of the air duct and thrust in the air canal. In the standard there is only one link that requires that the overall height of the vertical part of the chimney channel is at least 5 m.

Departure of the flue or ventilation pipe over the roofing coating is set by the standards of SNiP for completely different considerations. If you look at the recommended SNiP installation scheme, it becomes clear that the cutting of the ventilation and smoke channel should be at the level of the fastest air flow. The higher the air speed, the stronger the thrust, and on the contrary, - in the calm, the ventilation system works extremely unsatisfactory.

Conclusion

If the roof is flat or has a small scat in 5-10 o, the height of the output of the ventilation system is not principled, enough 400-600 mm. For two-tight systems with steep slots, it is necessary to follow the recommendations of the standards. For multi-level structures with auditory windows and complex broken slopes, in addition to the recommendations regulatory document, you will have to spend time in search of a place where air flows have the most stable speed. Otherwise, the air will move in the air ducts of jerks, to buzz and sometimes stop moving, which clearly does not add comfort. In this case, you need to install additional resonators and increase the number of ventilation conclusions. The performance of six conclusions will correspond to two huge stands, and the uniformity of the flow is 2-3 times higher, unless, of course, all the racks are evenly distributed across the skate area, and not collected by one bundle.

Sergey Novozhilov - expert on roofing materials with 9 years of practical experience in the field of engineering solutions in construction.

Roof ventilation is needed, like ventilation attic or bathroom. The temperature and humidity regime on the surface of an unjugible roof is disturbed. Condensate drops are settled on roofing material and bearing structures, causing rotting, destruction and leading to frequent repairs.

Why the roof ventilation is necessary

Due to the temperature difference in the underfloor space, condensate is collected. Water penetrates the insulation, its insulation qualities deteriorate. The more moisture under the roof, the worse it holds the temperature.

Most often, the rafter system is assembled from a tree, subject to rotting with constant contact with moisture. Mold covered rafters are destroyed, threatening.

The cluster of water in the roofing carpet made of soft materials causes peeling of the coating. The roof begins to flow. And only the roof ventilation will help to warn all trouble.

Pros of houses with ventilated roofs:

the underfloor space is blown out with fresh outdoor air;
the optimal temperature and humidity in the attic;
the properties of the heat-insulating material are preserved;
roofing materials and supporting structures are protected from mold, fungus, sagging.

Bad roof ventilation in a private house calls:

wetting stropile design, rotting, deterioration of carrier properties;
deformation or rust roofing material;
the destruction of stone and concrete parts;
reducing the thermal insulation quality of the roof, which means increasing the cost of heating at home;
overheating at home and roofing in the hot season.

In this regard, it is necessary to mention the importance of the downtown roof ventilation, where the underpants space is a residential.

Methods of ventilation roof

The ventilation of the roof of any private house is carried out by the method of natural air movement in the underpants space.

There are several mechanisms for ensuring ventilation roofs in a private house:

ventilation Skate two scope roof.
farmery ventilation.
exhaust roof fans.
pieces with ventilation holes.
skates of special design.
ventilation gaps that provide when installing the roof.
hearing windows in the attic.

And now consider the features of different designs of ventilation roofs of houses collected from different materials.

Ventilation of the roof of flexible tile

When laying flexible tile Be sure to be a gap for ventilation. But for the free movement of air on both sides of the roof, it is necessary to observe a few more conditions.

Requirements for ventilation of the roof of flexible tile:

Between the insulation and the base of the roofing is inserted with 50 mm;
At the bottom of the roof slide, ventilation slots are left through which fresh air penetrates. This is a favorite place of the settlements of small birds. Therefore, it is desirable to cover the gaps for ventilation of the roof of a soft roof with grille or sofits;
Air hood is provided by skate products or aerators;
The lamp is installed in a special way, with breaks so that the air flows are freely taken upwards;
The height of the air layer is determined by the thickness of the bar. Which is chosen depending on the length of the skate and the angle of inclination of the roof. Correctly calculate the width of the air gap can only specialist.

For example, when the length of the skate is 5 meters, the angle of 10 degrees is enough 5 cm if the angle is the same, and the length of the skate is 25 meters, a 10 cm thick is thick.

The ventilation of the roof of a soft roof can be made 1 or 2-contour. The two-circuit system is considered on the attached illustration.

1 - insulation, 2 - vaporizolation, 3 - anti-durable protection, 4 - the first gap for ventilation, 5 - second gap for ventilation, 6 - Roofing.

Forced ventilation flexible roof

To increase the efficiency of the ventilation of the roof of the flexible tiles, aerators are installed. There is always reduced pressure in the aerator, so the thrust never disappears.

Aerators are produced different diameters and heights. Separate size and quantity depending on the roof area of \u200b\u200bflexible tile.

Ventilation Aerators is equipped according to the rules:

between the two aerators should be at least 12 meters;
they are installed on the highest places of the roof, evenly;
if the roof is recently installed, it is preferable to choose the insulation jacks;
if the aerators are installed during the repair of the roof of the soft roof, the best place For the ventilation element - where the roof is slightly swollen;
the diameter of the hole for flugades should be 1 - 2 cm more than the diameter of the pipe itself;
the aerator is attached by anchor bolts or dowels;
the joke needs to be treated with a sealant or stick a special tape.

Dersighted roof ventilation

Roof ventilation over the attic carries an additional essential temperature regulation function inside a residential attic. The lower surface of the roofing cake actually adjoins its ceiling. Thus, air movement along the inner plane provides additional thermal insulation. Therefore, a special technology of ventilation facilities has been created. mansard roofs With the output of wet, hot or cold air outwards.

Principles are used natural ventilation: Warm air is displaced with a cold stream going from below.

The components of the roof of the roof of the attic:

vapor barrier film or membrane (selected with minimal permeability);
insulation, which is located between the rafters;
doom;
controller from Rosek or Brousa;
waterproofing;
roofing.

The diffusion membrane completely warns the condensate accumulation. Special membrane fabric does not allow moisture from below (from the horsard residential space) to the lower surface of the roof. At the same time, a gap remains under the roofing material for the unhindered movement of air masses. Waterproofing warns moisture penetration from outside.

It is also necessary to provide gaps in the cornice for air inlet and in the area of \u200b\u200bthe skate for exit. The upper ventilation gap is located between the waterproofing and roofing coating. Water penetrating the street evaporates through this outstand. Perfectly ventilated and structures that support the roof.

The lower ventilation gap is located between the waterproofing and the insulation layer. Water evaporates through it, penetrating the insulation from the bottom. The air from the residential premises is saturated with water vapors that need to be output.

Paro and waterproofing roof

Insulating films are laid on rafters, between which the gaps are left no more than 120 cm. So that the condensate does not fall on wooden beamsFilm is mounted with saving 1 - 2 cm. Fasten it with a stapler or nails with a wide galvanized hat. If the hat is not large enough, the film breaks down. The canvases are laid out with overlapping in 15 cm, which is sickling with scotch.

A minimum of 4 cm should remain between the insulation layer and waterproofing. The film is rolled along the rafters and fasten the rails along them, navigating galvanized nails.

The counterclaim consists of bars that are installed at the intervals of 15 cm.

In the area of \u200b\u200bthe skate, it is necessary to leave 5 cm between the edge of the insulation and the axis of the skate for the product. And only now you can build a crate, the type of which depends on the roof material.

It is important to correctly process the places of entry of pipes into roofing pie. The film is cut in the form of a truncated triangle. It turns out the semblance of valves that are attached on the walls of the pipe or brushes with a tape-sealant.

Vaporizolation is mounted in the latitude, the lower gap is not left. But the upper product between the membrane and the crate is necessary.

In order to protect the roofing material from the exposure to steam from the living quarters, the dies of the membranes attached to the heater with a smooth surface inside. In small hairs, water droplets are held, not rolling into the puddles. Such a barrier for the pair extends the term of using the insulation and wooden structures, retains the quality of isolation. Thanks to the film on the rafters, the colonies of mold are not formed.

The paosity of the vapor barrier is rolled out across the insulation material, the brass is 15 cm, the edges are lined with a special scotch.

Skown Aerator for ventilation

The ski aerator provides ventilation of the roof of the roof, helps maintain temperature and humidity in the attic. Finished skate aerators can be mounted on the roof of any type.

They are installed only on the roofs with a bias from 14 to 45 degrees. On the roof are necessarily equipped with skate products. The length of the aerator must coincide with the skate length. From the chimney to the skate cut, a distance of 30 cm and more is maintained. The design of the ventilated ridge of the roof should be hermetic.

Dersighted roof deflectors

Deflectors or roofing aerators - These are mechanisms for eliminating moisture and pair of roofing pie. The aerator uses a convection method.

The deflector in the mansard roof provides:

evacuation of the couple before it reaches roofing materials;
reduction of pressure, preventing the appearance of the minvatage used as a heater;
evacuation of moisture from Minvati, warning condensate loss.

According to the ventilation regulations, the roofs of an attic type must be equipped with 1 deflector for every 100 square meters. meters. Such a density allows you to effectively remove the excess moisture. If the roof is very cool, and the skates are tilted, the deflectors are placed in the end and skate run on the compounds of the insulating layer.

Roof ventilation from metal tile

The ventilation of the roof of the house from the metal tile has some features.

Continuous ventilation is ensured during the installation of roofing pie and is that between the roofing material and thermal insulation, the gap is left to 5 cm. The lower layer of the insulation is ventilated due to the slot with a thickness of 5 cm before the crate. And so that the wood does not go out, the sealer is put under the horse.

The area of \u200b\u200bthe ventilation slots in the eaves should be equal to the area of \u200b\u200bthe skate products (the flow of the inflow is equal to the volume of the outflow). The total area of \u200b\u200bthought should be 1% of the roof area. If during the design and construction of the house, the ventilation of the roof of the metal tile is not thought out, there is an express method for already finished roofs.

The basis of the roof ventilation in this case is ventilation pipes and ventilation outputs. The height of the pipe should be 50 cm or more. For every 60 kV. The meters of the roof area are installed 1 pipe as close to the skate. By the time of installation of point outlets of ventilation, the video of which we present, the roof of metal tile should be completely collected.

Most often used plastic pipes, they do not violate appearance Buildings and long serve.

In areas with abundant snowfall in winter, plugs are installed up to 65 cm long. The places of penetration of the pipes to the roof are hermetically closed. When the roof is common, and the skates are more than 6 m long, equip ventilation adjoins. The height of the adjoints from 40 cm above the roof. Instead of a conventional pipe, it is sometimes more efficient to use deflectors presented on the roof ventilation video from metal tile.

Ventilation of the ridge of the roof under metal tile is provided by the skateboard separating two roofs. On the one hand, the air freely exits, warning the formation of condensate.

Natural thrust is used for ventilation under the roof. And it will only work if the number and location of the ventilation outputs is accurately calculated.

Installation of dotted ventilation

Spot outputs are suitable as ventilation of the holm and the pitched roof of a small area. Complex roofs with several skates are equipped with each skate output. The distance to the skate should not be more than 0.6 m. It is not desirable to mount two outputs on one sheet of metal tile, so as not to weaken the design.

By purchasing ventilation outlet for the roof of metal tile, the following parameters are taken into account:

the cover profile must coincide with the metal tile profile;
pipe color;
temperature limits for this instance;
the set includes installation instructions, lining, template, fasteners, pipe itself, and a passing element;
the diameter of the pipe depends on the roof area.

The most important point in installing the point ventilation of the roof of the metal tile is a teething of the opening of the desired size and hermetic installation of the pipe. If the device is assembled correctly, in accordance with the annotation, the place of the adjunct to the roof will be measured from rain or snow.

The hole is cut out clearly by the applied pattern with the help of scissors for metal or hacksaw, but not only a grinder that spoils the coating.

Tightness is provided by silicone, which is treated with a sealing circle. Next, the passage element is attached with screws from the kit and the pipe is inserted into it. The passing item is necessary for fixing the pipe. To the fastening it turned out reliable, the hole in it cuts over a quarter less than the diameter of the pipe. Sometimes this node is sold already assembled. The pipe must be installed vertical, which is verified by the level. Now it is fixed with screws and covered with decorative linings.

Roof ventilation from corrugated

The ventilation of the roof of the corrugated floor is organized by the natural method, similar to the ventilation of the roof of the roof from the metal tower. In the cornice zone, the air penetrates into the subsidy space, it goes up to the skate freely and is discharged with a tent skate. If the horse is not longer than 10 m, through the end.

Ventilation of the roof of the roof of the roof from the corrugated floor is provided by the installation on the waterproofing layer of ventilation plates. The lowest rack near the eaves should be thicker than 50%.

Waterproofing does not reach the roof of the roof, ensuring high-quality ventilation of the roof from the corrugated floor, do not prevent the vapor exit. And the waterproofing of the water is prevented by sealing the skate with the "Top Roll" system. You can also install the ventilation case of the roof under the professional flooring or metal tile.

Ventilation of a single-board roof

More often single roofs Install over the verandas and terraces, where the ventilation is not needed. And another situation when she is residential house. Ventilation of a single-table roof is equipped very simple and this is a great advantage of the design. No need to acquire aerators or mount a piece of special form, but only correctly assemble the roof itself.

Single roof certainly needs ventilation. Under the roofing material, a place is left for the free advance of air flow. Movement is available upwards. Therefore, a lumen is left between the heat insulating layer and waterproofing. Frequently drill additional ventilation holes in crankshafts.

Overactions of the roof are sewn with sofits with perforation. When installing the crate between the boards, small gaps are left. You can also install ventilation grids. Single roofs are ventilated with an angle of inclination of 5 - 20 degrees.

Ventilation of the hip roof

When building ventilation, the roof of the holm design is guided already outlined above the principles. This is a natural ventilation method, in which the air falls into the cercerspace from under the eaves and goes near the skate.

Therefore, special attention should be paid to the wind binder cornices. If the eaves are taken by a tree, the slots are left between the boards. It is more convenient to make the end of the finished perforated plastic (sofit). If the stitch is ready, and the ventilation is not provided, the openings are cut into which the lattices are mounted for supply ventilation walm roof. The diameter of the lattice is 5 cm, they are covered with a small grid. There are no more than 0.8 meters between the lattices. There are models of various colors and shapes on sale.

In accordance with the regulatory technical requirements, all rooms are equipped with an air exchange system. The exhaust pipe to ensure normal traction should end above the skate of the house. Accordingly, it is required to equip the output of the ventilation on the roof of the building. Considering that the roof itself and the Ventshacht's output tube have a number of features in the structure and are made from different materials, then the installation of the ventilation pipe on the roof requires compliance with a number of rules. One of them is to achieve maximum tightness of all compounds, since it depends on the safety of the operation of the house as a whole.

Reasons for the output of ventilation on the roof

The end of the ventilation system above the roof of the house is due to the following reasons:

the need to create thrust to ensure a full air exchange intercession;
installation of the competent ventilation scheme.

Construction standards require full ventilation of residential premises. If the construction project was all right taken into account, then you can detect exhaust vents on the walls in the toilet, bathroom, wardrobe or storage room, as well as the kitchen. They are necessary to eliminate unpleasant odors, combustion products and excessive moisture from the premises. So that all negative factors have been withdrawn from the house, it is required to organize the end of the ventshacht abroad above the roof. Otherwise, they will again fall into the house with the flow of incoming air.

Installation of ventilation pipe

Varieties of ventilation pipes

The ventilating pipe for hoods on the roof is divided into several categories. First of all, the shape of the cross section of Ventkanalov is distinguished:

round
rectangular;
non-standard.

In the production of ventilation channels can be applied different kinds Materials. Such as aluminum, stainless or galvanized steel, polyester-based fabric and plastic are most popular.

Primary requirements

A number of requirements are made to the ventilation system that did not bypass the air duct itself. You can familiarize yourself with them in the list below.

The minimum diameter of the section, which has a ventilation channel, is fifteen centimeters. Galvanized air duct with such parameters shows good performance.
In the process of arranging the system of the supply and exhaust ventilation, it is necessary to make sure that the annular rigidity of the pipeline in the design of the tap part. The reason is as follows - on a plot that rises above the roof, the pipe is constantly facing a significant wind load. Therefore, the design is obliged to effectively cope with it.
The ventilation pipe should have an increased margin of safety at the same time possessing the minimum wall thickness. The smaller the thickness indicator, the higher the capacity in general will be.
Metal ventilations should not be covered with a layer of rust over time. In the room there are pairs of moisture that are settled inside the pipeline. They should not cause the development of corrosion processes.
The exhaust pipe itself should not be distinguished during the functioning of harmful gases and does not become the source of the spread of fire.
The design is required to have a minimum weight.

It is worth noting that brick and galvanized ventilations fully comply with almost all qualities mentioned above. The brick pipeline has a weight corresponding to regulatory requirements. Metal pipe In the course of operation, the dust is capable of attracting, as static electricity accumulates on the walls.

Blood ventilation

Stages of mounting work

Before the supply of ventilation pipes to the roof, it is necessary to complete work on the installation of the ventilation system in the building. The air duct itself should be securely fixed. The list of tools depends on the roof material at home. For comfortable performance, the next primary list of tools and materials will be required:

chisel;
electric drill;
building level;
lobzik (extremely desirable - electric);
screwdriver Set;
insulating material;
scissors for metal or "Bulgarian";
marker;
hardware for fixation;
sealant;
rag;
passing node;
individual protection means.

While doing self-mount The ventilation exits on the roof should be used by the assembled node of the passage, thereby significantly simplifying its work. The sequence of actions has the following form:

Marking. Taking advantage of the marker, make markers on the template (depends on the section and size of the ventilation pipe on the roof) in the place where the ventosht will go.
Creating a slot. In the roof it is necessary to cut the hole using a tool for processing a certain roofing material (usually "Bulgarian").
Removal of the top layer of the roof.
Drilling holes for the fastening of the output segment of Ventshacht.
Marking for mounting a passage node.
Creating grooves in which self-made screws will be placed in accordance with the previously conducted markup.
Installation of the passage node.
Its fixation with the help of self-tapping screws.
Installing the ventilation pipe, fixing it with the help of appropriate hardware.
Isolation of all slots and holes.

Installation features

During the planning and installation of the ventilation system, it is necessary to check the calculations for compliance with the technical rules. It is strongly recommended to entrust the design of the specialists dismantling in all features and technical nuances of the building.

At the entrance and outlet of Ventkanal there is a difference between the temperature indicators. Inside the channel there is an increase in the thrust due to the temperature difference indoors and beyond. This is the main reason that in the winter ventilation period, it is characteristic of working with higher productivity than in the summer.

At the design stage, it is necessary to think about the thermal insulation of the channels that pass under the roof. This is required in order to do not reduce the air thrust over time. This solution effectively affects the protection of the hood channels from the depth of moisture. In the case of the location of the ventilation pipe along the chimney, it will take care of its heating (the quality of operation of the ventilation system as a whole is positive). On the other hand, there is also its minus. In such channels, the thrust is different, therefore, with incorrect compilation of calculations, you can encounter a violation of ventilation.

Properly decorated ventilation conclusion contributes to efficient air conditioning indoors. Independent installation does not cause difficulties subject to preliminary familiarization with the peculiarities of work.

Fixing the top of the ventilation riser

Consequences of montage errors

The competent installation of the ventilation pipe on the roof is the key to the full operation of the entire system. In case of inconsistencies, the recommended installation standards will arise the following negative consequences:

weakening of thrust;
the presence of unpleasant odors in residential premises;
accumulation of moisture in the rooms;
condensate inside the system;
lack of oxygen;
the appearance on the surface of the walls fungus;
scoop deposition on facing materials installed in the kitchen;
increasing the intensity of diseases in all tenants;
frosting of certain elements of the building designs.

The installation is correct is the main factor that determines the fullness of the air exchange and comfort of accommodation.

The prerequisite that the roof can serve reliably and is long enough to equip it with its correct ventilation system, which will ensure the ventilating space. Ventilation is able to increase the service life not only the most, but also the whole building. Incorrectly performed ventilated system is able to entail a mass of negative consequences, and effective ventilation will prevent from the appearance of mold and premature damage.

This article describes in detail essential momentsRegarding the installation and operation of the ventilation system:

Roof life
No roof ventilation: Negative consequences
Benefits of the presence of ventilation system
Ventilation system
Ventilation options
Broof eaves: types and protection options

Roof life

A completely natural process is a cluster under the roof of the house warm airformed by washing and drying linen, cooking and washing dishes. In the summer period, on the contrary, hot air penetrates the room.

For the roof of the roof, the only correct way to confront the above phenomena is to create proper system Ventilation.

Under the correct ventilation system, it is necessary to understand the presence of ventilation conclusions on the roof of the hoods and other systems, as well as the ventilation of the space located under the roof. Compliance with all these conditions guarantees a longer service life, both roofs and all at home.

No roof ventilation: Negative consequences

If the ventilation system is made shortly, then the condensate will be moisturized each element. And the wetting of the wooden roof structures can entail very dangerous consequences.

Negative consequences Incorrect roof ventilation:

Formation of mold and fungus on the bearing elements of roofing design;
Destruction of metal structures of corrosion, as well as the destruction of parts from concrete;
The layer of ice, formed on the roof, contributes to the coating of the roof of moisture, resulting in damage to the roof and the drainage system;
Reduction of thermal quality material due to moisturizing the layer of thermal insulation;
Significant air heating inside the building in the summer due to severe heating roofing.

Especially negatively, this is manifested when the attic is a residential premises, and the roofing coating is made of bituminous tiles.

Improving the costs aimed at improving the system of air conditioning at home inside.

Benefits of the presence of ventilation system

The main function that the ventilation system should perform is to ensure the passage of atmospheric pressure, which contributes to the extractor of the heated air from under the roofing coating.

The pulled air ensures the ventilation of the attic room. If the installation of the ventilation system is competent, this air flow occurs naturally, and there is no need to additionally use mechanical equipment.

Thus, the presence under the roof of the ventilated space has the following advantages:

Always dry and cool condition of the attic room;
Outer air Of the attic capable of going out naturally;
Bearing roofing elements, coatings and thermal insulation layer are not affected by high humidity;
Lack of environment for the formation of rot and mold, preventing disruption of finishing materials of the coating;
Saving costs for electricity.

Ventilation system, roof ventilation

On any roof it is desirable to mount the ventilation system.

For this, it is necessary to apply the following elements and actions:

installation of skate or cornisic bloods and;
laying the roof covering having tiles with ventilation holes;
skates ventilation;
installation of the roof with the presence of gaps for ventilation;
arrangement of a hearing window or a solid ventilation channel along the endanda (suspension);
installation additional elements, in particular, if available chimney, ventilation mines that imply ventilation passage through the roof.

Ventilation options

Consider the most common ways to install ventilation.

Near the roofing skate or roofing aerators (point exhaust moves) are installed on it. Continuous exhaust exits can also be installed, and those and others can be combined with the general system of the house.

The most effective is the ventilation system, where the outputs are installed along the entire length of the roofing rib. The presence of exhaust outputs does not spoil the appearance either the roof nor the building, as they are usually covered with the main coating from above.

When installing this type ventilation, you should remember some moments that can reduce the input and output of the air:

Using mounting foam Or tapes for sealing the skate bar disrupts the natural ventilation of the roof.
The design of the roof made with two ventilation gaps. The film located under the roof completely prevents production. The solution of this problem is the teething of the undercoil film.

Please note that for absolutely all roofing coatings, regular elements are made that are sent to ensuring efficient ventilation.

These elements include:

Tiles equipped with air channels;
Aero elements;
Rolls ventilation.

All these elements provide ventilating space. But a more effective will be the system in which a fully ventilated horse is arranged, that is, ventilation through the roof. Using only individual elements provide high-quality ventilation.

Broof eaves: types and protection options

Architects and designers usually do not like various ventilation grilles and planks that are located on the cast of eaves. But it is precisely such parts that provide a sufficient area of \u200b\u200binputs providing air penetration and creating excellent roof ventilation.

The following types of ventilation of the cornice distinguish:

The gap left between the cornice board and the house wall;
Cut into sophibes of plastic ventilation grids;
Laying a special material with purples slightly above the sink of the cornice.

When laying insulation in the cornices, the ventilation will be closed. The passage of air masses also prevents green carpets of plantings located on the eaves. It should always be remembered to not disturb the ventilation system of the building.

Ways to protect roofing cornice ventilation channels:

Aero elements of the sink or grille;
installation on the roof of devices providing snow delay;
the drain system, which is located under the roofing coating.

The most difficult arrangement of reliable ventilation is such a part of the roof as Endow.

With the arrangement of the roof with a short sink of cornice, long sparging, as well as with two ventilation gaps, difficulties may occur in ventilating, as almost all places where the rods and endow are adjacent is completely deprived of airbreaking.

To avoid such difficulties, it is necessary in the flights of the rafter to make openings in the film, providing air intake, or equip the solid ventilation channel along the groove.

Important! To avoid ventilation impairment, you can also install aerator elements along the end. True, these measures will be effective only for roofs having an angle of inclination of the skate more than 45 degrees.

This species Ventilation systems are ineffective for flat roof. Preferably, this type of roof will be the installation of roofing electrical fans, high ventilation nozzles or inert turbines.

It should also be noted that each additional element of the ventilation system increases the total cost when the roofing coating is arranged. Therefore, the most cheap option is the natural ventilation of the underground space.

The most common type of ventilation system is the auditory window (hole), which is capable of providing not only high-quality ventilation of the attic space, but also an aesthetic appearance of the roof.

It is customary to distinguish such types of auditory holes:

triangular;
semicircular;
trapezoidal;
rectangular;
single one;
double.

For any kind of roofing, single ventilation openings are suitable. Two-tight holes are suitable for metal and soft roofs. Complex ventilation windows are more efficient and durable.

In conclusion, it should once again note that not only the construction of the rafter, roofing, but also the ventilation of the space under the roof is influenced by the reliability and long service of the roof.

Even a non-essential error in the roof project can cause premature destruction of the roof and building.

House owners face a problem when there is no natural ventilation in a private house in the roof. Especially relevant, such a question is worth the houses of still Soviet buildings. Based on the savings, many, building a house with their own hands, simply neglected with construction standards.

As a result of this, a short time, people even having an architectural education began to notice that it was not enough to notify ventilation in the indoors of a private private house. After all, the symptoms of fasting fresh air never make themselves wait. They show themselves very bright flavors in the kitchen when preparing various dishes. Dars in an unpleasant smell in the toilet room. But, most importantly, the wooden supporting structures of the roof of the house suffer directly.

In this article

Danger of lack of ventilation

If the ventilation is not made, then any residential building receives the following problems.

Condensation of moisture with temperature drops on the roofing space.Right on the wooden carrier structures constantly accumulates moisture, which becomes the cause of the spread of mold and fungus. In the future, this can even cause the origin of the roof elements.
The wetting of the insulation ends with the fact that it becomes the cause of the heavy smell on the attic room. As a result, the service life of even modern finishing and energy-saving materials is significantly reduced.
Excessive humidity brings to the point that water can even stick through waterproofing and start saving the ceiling space. As a result, even expensive repair with suspended ceilings May come into disrepair.
Permanent accumulation of not the most pleasant aromas in the process of cooking the hostess of differentty.The lack of a ventilation system will lead to a grease directly on the inside of the walls of the kitchen room. And therefore, the general cleaning will not make himself wait long.
The smell of damp in the bathroom after each use.Even on a tiled decoration under the action of constant humidity, the most real mold appears. Will get rid of which, by the way, will not work.

And all this becomes possible due to the lack of just natural ventilation in a private house in the roof.

How did the ventilation before?

A very simple way out of the situation was known for more than ancient times.

During construction, there was necessarily the so-called auditory windows. With the form they played a difficult decorative role, as it seemed to many. With their help it became possible to dry attic room Any building. True, this option did not provide forced ventilation and air hood. Therefore, still "dead" not ventilated places remained.

To ensure complete ventilation, it was necessary to take care of the ventilation on the front of the roof and the cornice.

When performing all these conditions, the air in the attic space will be updated more than once within one hour.

But it must be remembered that everything has a limit. Incorrect withdrawal of ventilation on the roof of a private house can significantly reduce the parameters of thermal insulation. So it will not have to talk about energy saving and in the winter period to spend more energy for heating.

Conditions for mounting

For ventilation in the roof, when it is installed, compliance with the following conditions.

Technological fence between roof coating and directly insulation.Which allows air to be easily passing between layers building materials.
Installation of additional elements providing forced ventilation.Thanks to them, it appears the possibility of creating effective thrust of the air right into the street. On the roof for this are the passing devices.

Additional elements

Additional elements for ventilation of the roof of a private house.

Special roofing fan.With their help, you can easily get rid of excessive moisture in the room.

To use it, it is necessary to take into account that for every 1 square. The meter should be a vent hole at least 0.002 mq. And it is desirable not to forget that it is necessary to take into account the slope of the roof and the type of its material.

As a basis in this case, a glass is made of stainless or galvanized steel. It still put a pallet that will remove moisture.

The fan is necessarily placed on the rubber sealing gasket, which provides tightness and vibration insulation.

After assembling all elements in a single design, a connection to the electrical network is connected. The main thing is to perform high-quality isolation of all connections to avoid short circuit in the wiring.

Farmery ventilation.It is possible if you put the technical gap between the wall of the building and the eaves when installed. The distance must be at least 50 millimeters. You can add such ventilation with special lattice. In combination with the technological gap between the skate, the optimal ventilation of the roof is achieved. The output of moisture in this case is ensured by non-stop at any time of the day and day.
Aeritative elements.They help to remove moisture well. Specially designed point aerators are set at a distance of 0.5 meters from the roofing skate. The permissible angle of the skate can be 45 degrees. If the aerators are several of the distance between them should be more than 12 meters.

Proper ventilation output

Proper ventilation output provides:

The outflow of warm and rich water moisture from under the roof directly outside with the attic in independence from the type of roofing and the type of insulation used.
Suchness of all roof bearing structures under all weather conditions. Moisture just does not have time to condense and wet everything that is under the roof. And therefore excluded rot and mold.
Optimal temperature range in hot summer days. The withdrawal of heated air from under the roof provides excellent ventilation. So, the tenants of the house will not feel the excess stool, being inside the house.
No extra smells inside directly kitchens. This ensures complete hygiene and preventing the spread of bacteria.

Important moments

To ensure ventilation in the roof of your own home, it is necessary to take carefully at the following points:

Roof type. For each coating, it is worth considering certain features of materials. After all, different coatings have different properties.
The area of \u200b\u200bthe ventilated space and the angle of inclination of the roofing coating.

It is desirable to provide ventilation already at the construction stage of the house itself. Otherwise, the situation will already have to be eliminated after the end of all works. The output of moisture must be ensured uniquely.

Output

The main thing is not to save on the quality of chosen building materials and components.

And if necessary, seek help from specialists who will be able to provide high-quality consultation and give right advice. After all, if there will be any errors when performing work on the installation of ventilation, it means that in the subsequent due to the inefficiency of the system will have to take new measures again.

It is worth remembering that the residential building is like a living organism that needs proper care and careful use. It is also very demanding about the presence of fresh air and breathes as a person. And in the absence of ventilation, building structures will permanently perish.