Why do you need a drain pipe for a sewerage system and how to make it? Sewer ventilation in a private house: diagrams and design rules Sewer riser on the roof

Vilpe ventilation outlets are designed to lead room ventilation and sewerage systems to the roof. Their installation is carried out complete with a passage element, which is selected according to the type of roofing.

Ventilation outlets used for ventilation of residential and utility rooms. By creating draft, they remove exhaust air to the street, while protecting the ventilation system from precipitation. They have good thermal insulation.

Sewer outlets necessary for normal operation sewerage systems. They prevent the appearance of unpleasant odors and equalize the pressure in the risers, thereby preventing the destruction of sewer pipes and ensuring the normal operation of water seals. Sewer outlets can be thermally insulated or non-insulated. In regions with a cold climate, to prevent the formation of an “ice jam”, the Stroymet company recommends using an option with good thermal insulation.

Types of ventilation outlets

Exit kitchen hood, natural ventilation premises, etc.

VILPE 125/ER/700, VILPE 125/ER/500, VILPE 160/ER/700, VILPE 160/ER/500

Internal metal pipe the ventilation outlet has a diameter of 125 and 160 mm; external plastic casing diameter is 160 and 225 mm, respectively. Standard height outputs 500 and 700 mm. Ventilation outlets are insulated with polyurethane, preventing the formation of condensation on inner surface pipes. VILPE - ventilation outlets are used in conjunction with a passage element and are installed vertically on any roof, ensuring complete tightness. The passage element is selected depending on the roof covering.

125 mm pipes are always installed on standard-sized passage elements. 160 mm pipes are also installed on regular passage elements, and when the roof slope is from 37°C to 47°C, they are installed on XL passage elements.

Central vacuum cleaner output

Insulated outlet to the roof of the central vacuum cleaner pipe with a cap and adapter.

To avoid unpleasant odors and destruction sewer system under the influence of generated gases, a ventilation outlet is required sewer riser on the roof.

Non-insulated: VILPE HO/300, VILPE 110/500

Insulated (insulated): VILPE 110/ER/350, VILPE 110/ER/500

The internal diameter of the sewer outlet is 110 mm. Standard exit heights are 300 and 500 mm. To prevent condensate from freezing on the inner walls of the pipe in regions with cold climates, it is recommended to install insulated ventilation outlets. It is unacceptable to equip the outlets of sewer risers with caps. The ventilation outlet is connected to the riser by a corrugated pipe with an adapter ring (75/110 mm). The passage element is selected depending on the type of roofing.

Exits for hoods and ventilation

VILPE ventilation and exhaust outlets are used to effectively remove exhaust air from the room to the street.

They are also used for exhaust ventilation with a recuperator or duct fan, kitchen hood pipes.

With the help of ventilation outlets, air flows are diverted in the desired direction. In addition, they protect the ventilation system from the penetration of dirt and precipitation.

Models of VILPE ventilation outlets offered by Stroymet: P, S. Finishes for a folded pipe with a diameter of 125 mm are also offered.

The P-ventilation outlet is equipped with a pipe with a height of 400, 500 or 700 mm.

To prevent condensation from occurring in the pipe, the pipe is thermally insulated.

Material for production inner pipe Galvanized steel is used.

The inner pipe is designed in such a way that its diameter allows it to be inserted into the air duct to a depth of 300 mm. This makes it easier installation work in cramped attic spaces, and also achieves additional structural strength.

The lower edge of the inner tube is equipped with rubber seal, the presence of which allows you to seal the connection between the air duct and pipe.

The cap, which is supplied with the ventilation outlet, protects against the penetration of dirt and precipitation into the duct.

P-ventilation outlets are offered in various options diameter of the inner pipe.

The air flow released is determined by the internal diameter of the pipe.

The selection of the passage element is carried out depending on the type of roofing material.

The size of the passage element is determined by the internal diameter of the P-ventilation outlet. XL ventilation outlets are recommended for use if the diameter of the ventilation duct is 160 mm. An XL pass-through element is also used to provide thermal insulation.

Dimensions: pipe height with cap is 400, 500 and 700 mm.

Contents: pipe with cap, 6 or 8 screws in the color of the product.

Standard pass-through element (0-160 mm)

vent. outlet-125, duct diameter 125 mm, outer diameter 160 mm

vent. outlet-160, duct diameter 160 mm, outer diameter 225 mm

XL-pass element (160-250 mm)

XL-vent. outlet-160, duct diameter 160 mm, outer diameter 300 mm

XL-vent. outlet-200, duct diameter 200 mm, outer diameter 300 mm

XL-vent. outlet-250, duct diameter 250 mm, outer diameter 300 mm

Standard colors:

Ventilation of the sewer riser

The VILPE product range includes non-insulated and thermally insulated sewer riser ventilation outlet pipes different heights, intended for use in various climatic zones.

Non-insulated outlets are intended for ventilation of sewer risers. They are used in areas with mild climates and frost-free winters.

In regions with a mild climate, a deflector cap with a height of 150 mm can be installed at the sewer outlet.

The connection of the ventilation outlet with the sewer riser is carried out using corrugated pipe VILPE.

Dimensions: height 200, 300, 500 mm, diameter 110 mm.

Contents: pipe, 6 screws matching the color of the pipe.

Standard colors:

To ventilate sewer risers in regions with frosty winters, it is recommended to install heat-insulated ventilation outlets.

The presence of thermal insulation prevents the formation of ice plugs, which can interfere with ventilation.

The connection between the ventilation outlet and the sewer riser is made using VILPE corrugated pipe.

Dimensions: height 350 mm and 500 mm, outer diameter 160 mm, inner diameter 110 mm.

Contents: pipe, 6 screws in the color of the element.

Installation: mounted on the passage element depending on the type of roofing. Fastening is done using screws.

Standard colors:

The manual creation of roof ventilation outlets is being successfully introduced into the environment of developers. Let's be honest, the incomprehensible and frightening ventilation outlet of the roof of the house evoked associations of a free “exit into space.” It’s vague and incomprehensible until the manufacturer got the builders interested in the ventilation outlet pass-through element. As always, useful tips will help you master the specialty of a roofing specialist and learn how to select and install penetrations.

What are roof ventilation outlets

To create and maintain the microclimate of a private home a necessary condition Ventilation ensures durability of structures. Ventilation is especially important for roofs equipped with skylights and attic space.

An important element of the roofing system and its final component is the ventilation outlet to the roof, which ensures the tightness of the outlet connecting pipe.

sewer pipe
operated premises
attic space.

The final element of the air ducts is an industrially manufactured section of the pipe-vent outlet, which, together with the main components and type of roofing materials, ensures exhaust air exhaust. Let us tell you, the components of the passage unit are: a pipe installed in the passage shaft, fixed in a steel cup, a connecting flange, a valve and a condensate collection element. The passage unit is equipped with a protective cap or umbrella on top; sealing and, if necessary, insulation are carried out in the interface plane.

passage units and passage elements

Nodes represent a collection ready-made structures penetrations made of steel with a heat-resistant coating and a sewer outlet element in the form of a pipe. For the construction and installation of penetrations, ready-made slabs (platforms) with a hole for the unit are also used; the designs of the units are designed for straight and pitched roofs. For soft roof A design option made of galvanized steel is possible.

Ventilation in a private house diagram with an exit

The ventilation outlet device and the development of a circuit taking into account the technologically possible passage are provided for at the design stage. The roofing passage unit is arranged for:

major roof repairs with replacement of the outer covering
when creating another roofing system
replacing the heating source.

Installation of the roof passage ensures the use of natural and forced ventilation, By functional purpose penetrations ensure the functionality of the kitchen hood outlet and ventilation outlet general purpose and sewerage outlet to the roof.

organization of roof penetration

The principle of organizing the penetration unit and exits to any roof is identical and represents the organization of a technological hole with the subsequent installation of the passage element itself and subsequent installation ventilation pipe.

Personal creation of a roof penetration is provided by the following parameters:

roofing material
angle of inclination of the existing roof
height of inter-roof space and rafter system.

Naturally, the passage elements, which are used to provide ventilation, are distinguished according to the type of roofing materials and design features devices.

The organization of the ventilation outlet for metal tiles differs from the outlet of a soft or standing seam roof.

The following types of roof penetrations are distinguished, depending on the configuration and shape of the passage, entailing the installation method:

roof penetration type Master Flash
penetration straight and angular with a passage element.

How to choose roof penetration by its main components?

Ventilation output in a private house by type of roofing material

type of ventilation outlets

There are P-ventilation outlets and S-outlets, for which a passage element is selected based on the type of roof.

Ventilation outlets P They are an insulated pipe h = 500-700 mm with an external hood ø up to 300 mm and duct ø 150-160 mm.

Ventilation outlets S is a passage with a vertical flow of the ventilation system, equipped with an industrial duct fan or recuperator. The outlet diameter S allows connection to ventilation ducts ø 125, 160, as well as 200 and 250 mm. Square-shaped platform (base), the tightness of which during installation is achieved using a sealant inside connecting flange. Moisture-proof mounting holes and a galvanized pipe ensure the tightness of the ventilation outlet.

All that remains is to choose the right passage element according to the type of roof.

feedthrough configuration

Type of roofing – wave (metal tiles)

Passage element of the unit, designed for wave type roofing pitched roofs, is distinguished by the characteristic configuration of the base platform. The bend of the mating part of the element follows the contour of the tile wave, and the water seal ring is its projection.

An element should be selected for a metal tile roof.

For example, ventilation outlet vilpe and a passage element with dimensions of 410x240x187 mm with a wave width of 170-190 mm at the base, a profile length of up to 330 mm and a profile height of 25 to 52 mm with the possibility of pairing the outlet with profile types - XL, N, W, L.

The passage elements are made of polypropylene and reinforced with a protective layer from UV rays and precipitation.

Sewer ventilation outlet installed on pitched roofs In addition to the passage element, it is equipped with: a rubber corrugation for connection to a pipe of the appropriate diameter, self-tapping screws with a washer and an adapter attachment. The installation of the passage element is carried out according to a template with the connection of the mating point sealed with a non-acetic two-component water seal sealant.

Roof type – flat bitumen and soft tile

The pass-through element for flat pitched roofs is distinguished by flat base Dimensions: length 400-500 mm, width 276-300 mm, height up to 180 mm, like a vilpe ventilation outlet. The installation of the passage element and the creation of a water seal ring is carried out on the finished roof according to a template from the manufacturer.

Pass-through elements for standing seam and finished pitched bitumen or slate roofs also have a flat base.

How to install a slate roof walk-through element is shown here.

Useful tips on how to choose a gateway roofing element, shown in the best video.

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What are fan pipes?

Many people have heard from friends and acquaintances that it is necessary to create an installation diagram in a private home. This is due to high-quality ventilation of the toilet, bathroom, kitchen, and entire house, which can be built using a vent pipe.

What is a fan pipe, what can it be, how to install it?

The drain pipe is connected to the sewer system and is designed to perform a ventilation and water seal function with subsequent outlet to the roof. During operation of the sewer pipeline, gases accumulate in it. If you do not install a waterproof barrier, they will penetrate into the living space, which is dangerous for the lives of the inhabitants of the apartment. In addition, it will spread throughout the house bad smell.

It can be of any length, shape, depending on the installation location and the size of the sewer line. This part exhaust system can be straight, angular, placed in horizontal, vertical directions.

To prevent unpleasant odors from entering your home, it is necessary to make a high-quality one. In such cases, it helps, for the manufacture of which plastic is most often used. However, elements of metallic origin were not completely replaced. Today, many people use cast iron in their homes, less often. Metal does not want to give up its positions.

Read with this article: How to bend and connect with your own hands. Review from “A” to “Z” of this product.

Possible schemes

Laying and replacing sewer risers does not allow mistakes in the process of planning and installing the system, otherwise the living space will be filled with an unpleasant odor. To prevent this from happening, in a private house you need to choose the right drain pipe design.

There are 2 installation schemes for exhaust systems:

Horizontal.
According to this scheme, the outlet of the vent pipe must be carried out through a hole in the wall, and not through the roof. This scheme can be used in private construction if it is impossible to make an exit through the roof. The final outlet is covered by a grille rather than a deflector.
Vertical.
With this design of the fan pipe in a private house, the riser goes out through the roof.

There are three types of vertical outlet of the riser to the atmosphere:

output at an angle of 90⁰. It is necessary to make two branches from the riser, one after the other, at angles of 90⁰, after which it will come out vertically upward through the roof;
output at a slope of 45⁰. To directly exit the riser through the roof, it is necessary to alternately make a branch from the main riser, first at 45 degrees, and then at 135 degrees;
the usual vertical type outlet, which will immediately continue to the roof and exit through it to the outside.

Important! The ventilation installation scheme in a private house must be correct, that is, in accordance with the appropriate diameter and in the right place, it must be possible to anticipate the presence of a backflow blocking the overflow of feces.

Use of cast iron elements

For several decades, the installation of exhaust ducts took place using cast iron risers. Today, cast iron fan pipes are becoming increasingly rare. But in vain, because using risers made of this material you can be sure of the quality of exhaust and ventilation ducts. have a number of advantages.

They differ:

strength. The rigidity and density of the alloy contribute to safe operation, which can be purchased at a hardware store. They are used in the construction of private, multi-storey buildings;
long service life. This is due to high wear resistance, which helps maintain excellent technical characteristics for many years;
resistance to mechanical impacts. They are not afraid of accidental impacts, damage, or heavy loads.

Cons:

tendency to corrosion processes;
difficulty of transportation;
heavy weight;
high cost.

When repairing or replacing old cast iron risers, it is necessary to dismantle the existing system. It is not easy to do this if the sewer or exhaust line is located in hard to reach place. How to disassemble the fan cast iron pipe behind the toilet? It is difficult to carry out this procedure if tow with cement, aluminum or sulfur were used to connect the risers.

First you need to dismantle the parts that are located further from the riser. To do this, you should stock up on a chisel or a hammer with a plastic or rubber head. When you hit the chisel with an iron hammer, pieces of metal sharply bounce off the pipe and can fall into the riser, since cast iron is a very brittle alloy.

Having done everything preparatory work, start removing the cast iron drain or sewer riser:

After destroying this element of the system, gradually approach the crosspiece, leaving 30-35 cm of an almost broken part.
Using the remaining piece, gently loosen it. If this does not help, then use a chisel to start removing the packing, loosen it again, and then remove the remaining fragment.
If the system is condensed with sulfur, then it is necessary to take blowtorch or gas burner and start heating the packing. Before doing this, you need to cover the furniture and walls with a screen so as not to damage them. Preferably this work should be done by two people, since one must remove the heated viscous sulfur.
After removing a certain amount of the heated mass, remove the remainder of the unnecessary part of the part.

An option is possible when you can use a grinder to cut off the rest of the line right up to the socket. This procedure will ensure not only a neat cut, but also a quick, convenient joining of the new one to the old cast iron riser.

Important! The cast iron fan pipe can be used in any extreme situations. This means that such a system will function normally under conditions of a wide temperature range at elevated pressure.

Work with cast iron sewer or sewer pipes, including drilling them, must be carried out with the utmost care. This is due to the increased fragility of the metal.

Over a long period of operation, as a result of corrosion processes, cast iron sewer risers become unattractive. Therefore, they need to be refreshed. cast iron pipe in the toilet?

For painting use acrylic, water-dispersion paint. The shade can be very diverse.

Some owners refresh cast iron risers oil paints. Before painting, you need to get rid of rust, old peeling paint, unnecessary debris, and dirt. Only after such preparation can you begin painting. A painted, restored sewer line will last for many more years.

Application of plastic structures

In private homes, when installing systems for removing air and various types of odors, they mainly use plastic vent pipes. They can be round or .

Risers used as fan risers are produced different sizes. When installing an exhaust or supply ventilation Fan plastic pipes with a diameter of 50 to 110 mm and a length of 3-4 meters are in demand.

If the plastic one is cracked fan pipe in the ceiling, then it needs to be replaced. Repairing this part of the exhaust or ventilation line will not bring the desired result.

When carrying out this procedure, you should adhere to the sequence of work:

using a hammer drill around the riser, expand the diameter of the hole (at least 2 times);
use a grinder to cut the cracked element of the system approximately in the middle of the height so that it is convenient to remove both pieces;
remove the cracked parts and put a new riser in their place;
seal the hole around installed element exhaust ventilation both from below in the ceiling and in the upper plane of the ceiling.

It must be said about the presence of flexible plastic fan pipes. To connect them to a solid part of the system, it is recommended to use rubber rings for sealing. For better fit into the socket and complete tightness, they must be coated with silicone before installation. When attaching such a section to the wall, metal clamps are used, which are characterized by increased reliability.

Important! Although silicone is an ideal substance for high-quality sealing, it should be remembered that the next time you dismantle it, you will have to put in a lot of effort to remove it.

Today plastic risers can be purchased at any hardware store or store.

Dimensions

There is no separate part called a fan pipe, regardless of size.

This design includes:

regular tee;
lid or grill;
one or more pipes;
safety valve.

The dimensions of drainage pipes for sewerage, as well as for toilets, depend on the specific conditions of their operation.

The following rules must be followed:

You can use parts from any materials;
The size of the pipes for the exhaust riser, including the length, may vary.

Today, the most popular are plastic fan pipes with diameters from 110 to 50 mm, regardless of other linear dimensions (length).

Using a 110x45 ani plast w4220 drain pipe, which can be of different sizes, it is convenient to connect the sewerage system to the toilet outlet. Such a detail will seem to glue the toilet bowl to the sewer riser, which will ensure that there are no leaks in the bathroom. The size of the toilet drain pipe depends on the diameters of the drain, sewer riser, and the distance of these elements to the wall or ceiling.

The diameter of the part must be such that the maximum possible sewer flows do not interfere with its normal functioning. Sometimes ventilation and sewerage are constructed from risers different diameters. Then you need to use a special adapter.

There is a catalog where you can select the necessary parameters of parts for arranging an exhaust system.

Important! Ideal option placement of the exhaust riser - the place where the internal and external sewers are connected.

Fan pipe ventilation

Current building codes state that one-story houses It is not necessary to install ventilation, since in such dwellings the one-time drains are small. Buildings with two or more floors must be equipped with such systems. This is due to the fact that with the help of such risers communication with environment, which means ventilation processes occur.

Many people ask: “Can the waste pipe be vented? And if so, how to connect the vent pipe to the ventilation?” We will give detailed answers to these and other questions.

When installing a vent pipe, it can and simply must be vented, which is most often done. To carry out this procedure, you must first build a ventilation duct.

It is necessary to anticipate the installation of a check valve.

Its purpose:

prevents the return of drain flows;
prevents rodents from entering the sewer and into the premises;
corrects a sewer pipeline with an incorrectly installed slope;
limits the entry of mechanical impurities into the toilet.

The principle of operation of the device is simple: after cistern water comes out, it is triggered and the liquid enters the sewer system. At closed valve, unpleasant odors from the toilet and sewerage do not spread throughout the rooms, since the device is completely sealed.

Important! Install check valve immediately after using the toilet.

Although everyone is trying to install the exhaust system correctly, you can still smell an unpleasant odor from the sewer system in our houses and apartments.

Sometimes odors from the exhaust pipe are blown into the ventilation, since these two channels are located next to each other. To get rid of unpleasant odors, you need to install an aerator at the upper end of the riser. Thanks to this vacuum valve, the system will function perfectly.

Output to the roof

Not everyone knows how to ventilate the roof. It is necessary to do this, since it ends ventilation system There's no way in the attic. The drainage pipe must have access to the roof so that there is a connection with the street and the atmosphere. If the sewer is led to the attic, then all the unpleasant odors will be concentrated there. When the hood does not reach the roof, it is due to increased humidity in attic Mold will begin to appear, which will cause a lot of harm to the entire home. The vent pipe is mounted as on the roof multi-storey building, and one-story.

What to do when the drain pipe on the roof freezes? To prevent it from freezing on the roof, it is necessary to provide insulation around it. The cause of freezing is the formation of condensation, since warm air has the ability to rise up. The result is freezing of the walls with ice, which can lead to the blocking of the exhaust lumen and the cessation of the functioning of the entire system.

The risers are insulated with rolled heat insulators or “shells”, which should be securely fastened.

In some cases, it is impossible to carry out the drainage pipe to the roof. This is not a problem, since you can use a horizontal mounting scheme for the exhaust system. The end of the ventilation system will not be located on the roof, but will be vented through the wall into the air.

You can buy a roof vent pipe at a construction supermarket.

Important! Regardless of how the drain pipe is routed - onto the roof or through the wall, the system requires a check valve.

In order for ventilation systems to function for a long time and efficiently, when laying pipelines, you must adhere to the above-mentioned norms and rules. Only then will your home not be filled with unpleasant odors, but will constantly feel the flow of fresh air.

About ventilation of concrete septic tanks

For sewerage on their territory, each owner tries to make a two-chamber concrete septic tank. These containers must be ventilated not only to eliminate unpleasant odors. If you correctly design and build a ventilation system in a septic tank, then you will make the living of your family and residents of neighboring houses safe, comfortable, and enjoyable. You need to take care not only of yourself, but also respect your neighbors.

Such a structure is a habitat for bacteria that can quickly process organic waste coming from the sewer system. As a result, dirty wastewater turns into clean water and il. This biological-chemical process is accompanied by the release of a large amount of gas, which not only smells unpleasant, but can cause an explosion if a spark hits it. Conclusion: high-quality ventilation of a two-chamber concrete septic tank without a drain pipe is impossible. For the full functioning of a conventional septic tank, it is also necessary to provide ventilation.

Video

Many copies were broken in disputes about how to properly make the exit of the sewer riser to the roof. The time has come to clarify this sewer issue, and the invaluable experience of our portal users will help us in this.

What is a vent pipe;
How it works;
How to do without it;
Is a diameter of 50 millimeters acceptable?
Ready-made solutions from FORUMHOUSE members.

Fan pipe: what is it?

How the fan pipe is arranged can be understood from this diagram.

In a sewer system, this is the element of the pipeline structure that is the connecting link between the septic tank and the atmosphere.

And it doesn’t matter whether you use it on your site or made it yourself.

It should be remembered that in most cases the installation of this sewer element is simply necessary, since when passing waste water a vacuum is created along the riser. The water in the siphons of your home's plumbing fixtures, under the influence of a vacuum, begins to be sucked into the sewer system, and this can lead to a sharp decrease in pressure, failure of the water seal and the appearance of an unpleasant odor in the premises.

A siphon or water trap is a curved tube located under the sink or behind the toilet and filled with water. The liquid, which is constantly located in the curved part of this device, plays the role of a water plug, preventing the penetration of unpleasant odors from.

OnFORUMHOUSEyou can get all the information you need about both near Moscow, and in the southern regions, and in permafrost conditions.

Fan sewer riser in a private house: the experience of FORUMHOUSE participants

Indicative personal experience our forum members. Let's look at one of the most asked questions.

Latysya Member of FORUMHOUSE

- I have cesspool septic tank – concrete rings with bottom and lid. It is located 6 meters from the house. There are 3 windows facing this side. At first I thought of installing a ventilation riser outlet through the ceiling of the bathroom, then into the attic pocket and the roof of the house. I think this is necessary so that gases and other odors formed in the filling septic tank exit through it and dissipate higher above the roof. But the problem is that you don’t want to put holes in the roofing material. Help me understand whether there will be a smell from a septic tank without a ventilation riser, and what should be the diameter of the vent pipe in a private house.

Our forum consultant answers Evgeniy Fadeev :

Evgeny Fadeev:

– This sewerage element must be installed, and the pipe must have a diameter of 110 mm. If you don’t arrange it, then when the water seals dry out or break, a smell will appear. If there is no normal fan ventilation with inflow at the filter structure and exhaust at the roof, the smell will, one way or another, spread throughout the area. And for diameter you should remember a simple rule:

A 50 mm fan pipe will provide a flow approximately 16 times less than the flow through a 110 mm pipe. Thus, it will no longer be ventilation, but a set of several connecting tubes.

Sometimes homeowners come to the conclusion that the installation of this element of the sewer system is not necessary; they can do without it. But it’s easy to guess what will happen if you drain the water from the kitchen sink, bathroom and toilet, and there is no drain pipe in the design. But usually in modern country house two or more bathrooms are installed.

How do without a drain pipe in a private house

The answer to this question is: “in most cases there is no way around it.” It should be remembered that its installation is necessary:

When using sewer risers with a diameter of 50 mm in the communication system;
The house has two or more floors equipped with bathrooms;
or other equipment whose one-time flow can block the sewerage system.

Fan pipe on the roof: placement

Let's consider the following, very common situation: the house has already been built, the septic tank has been dug, the bathroom outlets have been planned, but the homeowner has not yet decided what to do next.

Prorab_2009 FORUMHOUSE Member:

– Help to properly arrange a fun exit to the roof. At the moment the situation is this: the house has been built, the roof is made of tiles, now it has come to sewer pipe, from the house to the septic tank 6m. It is possible to break through the ceiling and install it under the roof tiles in a cold attic.

According to our forum consultant Vadim , in this case, the following scheme is possible, and method number 1 would be more correct.

Vadim

– The first method is the most preferable. Fungus on the riser is not needed. Warm air rises through the pipe, condensation can freeze on the fungus and block it, and do not conduct it under the eaves, in this case the draft will decrease. Don't put it in the attic - the draft is weak and the attic stinks.

Fan outlet to the roof - basic rules

User of our forum (forum nickname VladimirKu ) advises adhering to the following rules when removing the drain pipe:

It should go up to the roof, at least 300mm. And as close to the ridge as possible so that the snow doesn’t tear it off when it comes off the roof. And it is designed not only to protect hydraulic locks during internal sewerage your home, but also for ventilation of the sewer system.
If the house is more than 2 floors and has long horizontal internal sewer lines inside the house, then a second drain riser will have to be installed.
If you have an autonomous biotreatment system using microorganisms that require oxygen for their life, then a ventilation system is extremely necessary.

The risers are placed as straight as possible. Turns, bends and narrowing should be avoided so as not to create resistance to air flow.

There is only one way to make the toilet’s bathroom safer and more comfortable, remove unnecessary odors and normalize the operation of the water seal. This can only be achieved by equipping the sewer with a ventilation outlet to remove gases accumulating inside the system. Similar devices are found in almost any sewer drain system equipped with a water seal. If the ventilation system of the riser becomes clogged, freezes or does not work efficiently enough, the entire entrance to the house will know about it.

Ventilation functions for sewerage

It’s not even a matter of the spread of unpleasant odors; the ventilation outlets of sewer risers can solve two important problems:

Ensure trouble-free operation of the hydraulic seal by bleeding overpressure inside the sewer system. Ventilation compensates for gas pressure surges. Thanks to this, the contents of the bellows of sinks and water seals of compacts are not squeezed out into the room;
Ventilation removes 100% of sewer gases that pose a certain danger to residents of an apartment or house. Even if during a period of prolonged absence of residents the level in the water seal drops below the safe level, most of the gases will be released onto the roof through the outlet for ventilation of the sewer riser.

For your information! Unlike a standard room ventilation system, the sewer outlet works in two directions.

For example, when discharging water into the sewer system on the 2nd or 10th floor, it does not matter, the water mass, falling along the riser, entrains a large amount of air, thereby creating a vacuum inside the pipe. Through the outlet of the ventilation system, part of the air is sucked into the sewer and compensates for the vacuum. If the ventilation outlet is clogged, littered, frozen, or its cross-section is not of sufficient size to ensure free-flow movement of gases, the water seal will fail. Then the vacuum in the sewer will draw water from the water seal and, after a few moments, release it as gases back into the toilet or bathroom.

In normal mode, all gases released from dirty water, due to natural ventilation draft, rise up the riser and are thrown out through the pipe outlet on the roof of the house.

Requirements for the arrangement of a sewerage ventilation outlet

Like any ventilation system responsible for removing gases and vapors that are unsafe for human life and health, the ventilation outlet from the sewer cannot be built in any order, at your own discretion.

For stable operation of the sewerage system, the following requirements must be adhered to:

The size of the ventilation outlet must be no less than the diameter of the sewer riser. Most often, the ventilation pipe for exiting the sewer is selected with a 10% margin in cross-section;
The best material for the ventilation system is plumbing plastic. If the sewerage system is built from plastic pipe 110 mm, the ventilation outlet can be made in the form of a continuation of the sewer riser;
The sewer outlet pipe is raised to the roof, if possible, with a minimum number of bends and installed on the leeward side so that the gases at the outlet do not enter the living quarters.

Important! The sewer system vent must not be connected to the main ventilation pipe, hood or chimney. The sewer riser must have an independent gas outlet.

Typical ventilation option for sewerage

The simplest way to build a gas outlet involves using a ready-made set of parts and assemblies for the manufacture of riser ventilation systems, which includes:

Plastic outlet of a ventilation pipe on the roof of a house;
A protective cap for the deflector, which closes the exit from snow and rainwater entering the ventilation system;
A protective lining that insulates the pipe passage through the roof pie;
The corrugated pipe is a jumper; it is used to connect ventilation to the sewer riser.

Most often, to equip the ventilation system outlet, they purchase products from the well-known company Vilper. The standard ventilation pipe is a plastic outlet with a length of 500 mm and a cross-section of 110 mm.

A protective lining made of silicone and polypropylene is made separately for each type of roofing covering, taking into account the dimensions of the surface profile. The hinged design of the passage element allows you to install a ventilation outlet for roof slopes with an angle of inclination from 11 to 45 degrees.

Traditionally, the ventilation outlet is made in a non-insulated version. For climatic zones with a predominance of winter time For very low temperatures, it is recommended to use an additional cover with polystyrene foam insulation. In addition to insulating the pipe with the outlet, you will need to purchase and install warm option protective lining of the roof passage unit. The kit provides trouble-free reliable operation in a temperature range up to -50 degrees.

With more low temperatures The sewerage system, including the exit, must be equipped with a heating cable. Otherwise, water vapor will freeze at the outlet of the pipe, which will lead to blocking of the outlet and disruption of the sewer system.

The design of the deflector raises the most questions. For normal output operation, the deflector is an optional element and, as a rule, is not included in the standard set offered by manufacturers. However, in hot weather, especially in summer period, the use of a deflector helps to significantly increase the efficiency of ventilation and reduce the likelihood of failure of the sewer water seal due to high temperature air.

Installation of the exhaust pipe of the ventilation system

As a rule, the standard kit includes everything necessary for self-installation outlet of the sewerage ventilation pipe on the roof. The main difficulty that will have to be faced is precise definition output locations. Most often, to install the output, you have to dismantle the fragment internal insulation roofs.

After determining the installation point of the ventilation outlet pipe on the roof according to the markings made, using a jigsaw or a rotary attachment to a drill, a hole is cut along the diameter of the ventilation outlet pipe. Next, the passage unit cover is placed on the cutout, and drilling points are marked for screwing in the self-tapping screws. Glue is applied to the slump line, laid on the roofing and screws are screwed in.

On the inside of the roof it is necessary to install a silicone cuff with a corrugated pipe and blow out the joint between the roofing covering and the corrugation polyurethane foam. All that remains is to restore the insulation and vapor barrier of the roof, after which the entire structure can be connected to the sewerage system.

Conclusion

After completing the installation of the outlet for sewer ventilation, it is recommended to seal all joints and seams silicone sealant, resistant to ultraviolet radiation from the sun. At the same time, the pipe itself, the deflector and the lining are not afraid of ultraviolet radiation and do not require special protective measures. The exception is parts purchased separately from unknown manufacturers. It is possible that purchasing a ready-made kit for ventilation outlet equipment will cost more, but this is a guarantee high quality and long service life.