Sealant for cast iron sewer pipes. How to seal a stainless steel chimney

The sewer system will be able to perform its functions effectively only if potential leak points were protected during its installation. This applies not only to the laying and connection of pipes, but also to the subsequent sealing of the structure.

Builders usually check sewers for leaks. An appropriate document is issued, indicating that the system can be used. But over time, the junctions sewer pipes wear out and leak. You can prevent this situation if you worry about sealing the joints in advance. First you need to figure out how to close the leak in the sewer pipe, if it occurs.

Used materials and methods of sealing

How to seal a sewer pipe? There are several insulating materials with which you can complete the task.

The most popular of them:

silicone-based sealants;
sealing tapes;
cold welding;
cement mortar with resin tow.

The presented funds are used mainly for cast-iron sewers. At the same time, silicone-based sealants are the most popular. But there are special means designed to insulate pipes from other materials. For example, for sealing ceramic sewers, it is best to use oil bituminous compounds or asphalt mastic, they will do the job most efficiently. And to ensure the tightness of the socket joints of cast iron pipes, technical sulfur is excellent.

When you lay the external sewer, you must also seal the pipes from the inside. In this case, there will be no overflow of the drainage system due to ingress ground water.

There are several ways to seal sewer pipes that are currently in use. Each of them has its own advantages and disadvantages. Making a choice in favor of one or another method is based on their characteristics.

Silicone sealants for sewer pipes

Silicone sealants are air curing mastic coatings. Among the advantages of this material is the ease of use. The surface of the pipes does not need to be pre-treated with primers.

These sealants are made from silicone rubber with plasticizers. They increase the degree of adhesion, at the same time, the strength of the protective coating also increases.

It takes a minimum of time to seal pipes with silicone sealant. Anyone can complete the task. The composition is applied using a mounting gun. If there is no tool, but sealing of the pipe is urgently required, then the work can be done with an ordinary hammer. Its handle will act as a piston for supplying the composition. When the mastic dries, it will reliably protect the joints from leakage. Waterproofing for sewer pipes with silicone is easy and fast to apply.

How to seal a pipe with cement mortar and resin rope

It is possible to seal the sewerage system with these materials. The method itself consists in the fact that two-thirds of the depth of the socket is caulked with a resin cord. And the remaining third is filled with cement mortar, mixed in a ratio of one to nine. It is necessary to use a cement composition with the M300 brand.

An important nuance: the socket connection requires preliminary alignment and fixing. And only then can it be filled with the prepared mixture to ensure tightness.

Self-adhesive tape

Experts consider this material one of better ways joint insulation. In addition, self-adhesive tape has dielectric and anti-corrosion properties. One of the main reasons for its popularity is its ease of use.

Then it is necessary to wrap the tape along the length of the pipes with a spiral. At the same time, it is necessary to maintain its constant tension, the occurrence of even minor wrinkles is unacceptable. It is desirable to wrap with 50% overlap behind the joints. This will ensure the most tight connection of pipes in the case of using self-adhesive tape.

Cold welding

To use it, you must first clean and degrease the leaks. Then the composition should be kneaded until a homogeneous mass is formed. And only then cold welding must be quickly pressed to the treated area.

From an hour to a day, the material will be required to ensure the tightness of the leak. Time depends on temperature regime, as well as the amount of cold welding. But during this period, you can not use the sewer, so that everything is securely fastened.

One of the main advantages of cold welding is good adhesion even on wet surfaces. This feature allows the material to be used for prompt sealing of a leak in the sewer system.

Most often, when a cast-iron pipe flows in the sewer system, it is replaced with the same, only a new one. But you can also use alternative. A damaged section of a cast iron pipeline can be replaced with a plastic product. But in this case, the method of sealing will be different, because at the junction there are pipes made of different materials.

To achieve the best result, first of all you need to buy rubber or polymer adapters. Then you can move on to the main part of the task.

It is necessary to remove rust and various contaminants from the socket of the cast iron pipe. It is advisable to degrease it. Now on inside the socket is applied a layer of silicone-based sealant. Similar steps must be taken with outside adapter tube.

Two elements with applied sealant are connected. It remains only to introduce a plastic pipe into the pipeline. If it is absent, then the leak can be eliminated with a metal clamp. Such parts are generally great for repairing any pipeline systems. It is advisable to buy clamps together with rubber seal. Or you can do it yourself. It is enough to find a suitable material and cut out a small part of it.

Recommendation: it is possible to ensure maximum tightness in the area of leakage by applying rubber gaskets to it in several layers, and then fixing both sides of them to metal clamps with screws. This approach will create better pipe insulation.

But it is worth remembering that it is not necessary to use complex and time-consuming methods to seal joints. Of course, they are very effective, but require the preparation of special materials and certain time costs. In some cases, paint will do the job just fine. Its application to the joints of pipes will increase the tightness of the connection. Sometimes this is enough, then no leaks will occur.

Pipe sealing by painting is implemented in 2 stages. First you need to hammer the socket with a cloth, filling it all with paint. Use a screwdriver to carefully tamp everything. When the resulting mass hardens, the sewer will be ready for operation. Leaks should not occur.

Various materials can be used to seal cast iron sewer pipes and systems made of other materials. The choice of a suitable insulation medium is also based on the location of the pipeline. With the task can cope with anyone. It's enough just to prepare everything necessary materials with a small margin, familiarize yourself with all the nuances of the process and act in accordance with the instructions. In this case, no difficulties will arise.

What is a sealant for cast iron sewer pipes and how to choose the right material for sealing joints? One of the main tasks facing the master at the final stage of construction is to prevent leaks that appear in the sewer system.

Sealant for sewer pipes must be selected, given the fact that it has a significant diameter and a large length.

Sealing sewer pipes is necessary to prevent the penetration of sewage into the apartment and eliminate unpleasant odors in residential premises.

Solving the problem of sealing joints must be taken quite seriously.

Having identified the cause of the malfunction that interferes with the operation of the cast-iron pipe, the owner can carry out the entire cycle necessary work to eliminate it.

The causes of pipe leaks are varied:

defect in the material used to install the sewer;
improper laying of cast-iron segments;
the presence of cracks and holes in the riser.

Types of insulating material: self-adhesive tapes and their properties

As for the choice of insulating material, special anti-corrosion tape coatings should be used here. With their help, joints between pipes are sealed, coupling units, tie-ins, bends related to the sewer system are sealed.

Silicone sealant

Sealing of joints is carried out using silicone adhesives made in accordance with TU 6-15-1822-95, GOST 6-02-4-53-96.

The silicone insulating material is a rubber-based composition consisting of a filler, a hardener and a catalyst. The vulcanization temperature of the material is in the range from +60 to +200˚С.

Silicone sealant for repairing pipes in the sewerage system has a density of 2.0 g / cm³, dries at a temperature of + 20 ° C in 150 minutes. The characteristics of tensile strength are even more diverse, ranging from 16 to 20 kgf / cm² and depending on the brand of material.

The peculiarity of the sealant is that the vulcanizer has high adhesion to steel, copper, aluminum, silicate glue, concrete. Silicone sealant is resistant to adverse weather conditions, solvents, synthetic and mineral oils.

When repairing a pipe, there is no environmental pollution with toxic substances, since silicone materials belong to the 4th class of low-hazard products. Sealant is used for gluing and sealing joints and connectors in the repair of sewer pipes.

Additional means for sealing pipes

When sewer equipment becomes unusable, it is repaired with technical sulfur. What is the mechanism of its action? The material is first melted in an electric furnace at a temperature of 130-135˚С, and then it is poured into the socket. Unfortunately, the repair may be of poor quality if it was not possible to fill it at once.

Special precautions will help to avoid unpleasant consequences when working with sulfur, since the sealant is easily spilled, and careless handling leads to a chemical burn.

Insulation is performed using petroleum bitumen. It is not difficult to seal the riser inside and out, and after the work done, the operating life of the equipment is significantly increased and its efficiency increases.

After the oil bitumen coating of the inner surface of the pipes, the coefficient of friction of the liquid medium decreases and the fluidity of the effluents enclosed in the sewer pipe increases.

Epoxy resin is the most common material for. The joint is sealed by pouring resin into the gap, and can be used hot or cold for permanent results.

When working with Portland cement, it is necessary to apply the mixture over the joint.

Tools and materials for working with sealant

As for working on, the whole process requires competent, balanced actions from the master. After all, it is precisely the right tools and materials that allow sealing in the shortest possible time.

The following resources must be purchased in advance:

flax fiber;
paint;
steel brush;
petrol;
rag.

Having identified the cause of the defect, the owner proceeds to seal the sockets, using the following tools for work:

hammer;
cold chisel;
iron pot;
tripod
asbestos funnel;
thermometer;
a set of caulks;
iron cauldron.

To work with silicone insulating material you will need: a paint knife, a chisel, a scraper, staples, a glue gun, a brush, a cutter, toilet paper, spray gun, soap, brush for spraying the solution. A similar approach to selection necessary tools will allow to carry out work qualitatively and in a short time.

Using glue for sewer pipes

Sewer equipment, significantly worn out, with numerous damages, is repaired using epoxy resin. The material is necessary to eliminate leaks when performing pipe repairs.

Through cracks found after inspection of the equipment are sealed with a two-component adhesive composition. The mixture is prepared immediately before use, following the manufacturer's recommendations.

A detailed inspection shows that it is quite easy to eliminate the leak if epoxy resin is used for sealing. The composition is used in combination with a hardener, and the ratio of components for the formation of a working mixture is 1:2 or 1:1.

The polymerization reaction proceeds much faster with an increase in temperature by 10˚ C. The sealing of the formed cracks is quite strong, since the epoxy composition has minimal shrinkage, high resistance to adverse factors, and stable physical and mechanical characteristics.

Epoxy adhesive is obtained by mixing the resin and hardener in a ratio of 1:10, and distilled water is used to form a composition with a water-borne resin.

Thus, observing, it is possible to qualitatively carry out work related to the repair and planned replacement of equipment.

To prevent leaks in sewer systems, even at the construction stage, careful sealing of the joints of pipeline elements is provided. For its implementation, it is necessary to use one of the sealants specially designed for sewer pipes. It is chosen depending on the materials used, the method of installation and on the preferences of the installer performing work on the device. sewer system. In this article, you can find out which sealant for sewer pipes is best to use and how to properly seal this very seal.

The importance of sealing sewer systems

All pipes must be sealed, especially those that are laid underground. This process should be taken seriously in order to do everything at once and for a long time. After all, if defects exterior finish can be easily corrected, then in order to re-sealing the expansion joints of pipes buried in the ground, it will be necessary to perform a considerable amount of work, almost the same as when installing the system again.

At the same time, it is important to prevent leakage both from the inside of the sewer pipes and into the pipeline (for example, groundwater), so that the operation of the wastewater discharge system as a whole is not disturbed. For different types sewer systems use certain types of sealant.

Types of sealants and their application

The most common sealing materials that provide quality work with the components of the sewer system, tapes, silicone materials, technical sulfur, Portland cement solution are considered, epoxy resin, resin strand, asphalt bitumen, etc. When using each of them, it is necessary to follow a certain technology in order to achieve the required quality.

Option #1 - self-adhesive tapes

Among modern materials for sealing, special tapes with anti-corrosion properties are widely used. They are used to seal the connection area of pipes of different types, to protect taps, plugs, bends, corners and other elements of the sewer system.

Sealant tapes are quite easy to use, but very reliable and effective for protecting pipe joints.

The composition of such a tape includes a copper or aluminum layer, its base is bitumen-rubber. The protective film is removed during installation. Self-adhesive caulking tape is easy to use, yet highly effective, strong and durable. It not only seals, but also provides comprehensive protection for pipes, including anti-corrosion and dielectric.

Sewer pipes are sealed with tape in the following order:

before applying the tape, the surface is cleaned of dust and dried;
to avoid wrinkles and folds, the tape is kept stretched during winding;
the tape is overlapped in a spiral by 50%, so that the entire insulated surface will be covered with 2 layers of film.

It's important to know! Sealing tapes do not tolerate direct exposure to ultraviolet radiation, so sealed sections of sewer pipes located in the open sun must be wrapped with additional protective material.

Option #2 - silicone sealing materials

The basis of such sealants is silicone rubber. The composition of silicone sealants is a complex mixture of various substances that provide reliable sealing quality. They are characterized by a high degree of adhesion to surfaces, and without pre-treatment with primers.

A distinctive feature of silicone sealants is a high degree of adhesion to surfaces that do not need to be further processed.

Depending on the type of hardener, silicone sealant can be of two types:

Acid. It has a relatively low cost, but is not suitable for application to surfaces that can interact with acids.
Neutral. Such a sealant is considered more versatile and suitable for any surface.

With the help of silicone sealants, the joints of metal and plastic pipes. With the participation of moisture in the air, vulcanization occurs silicone sealant. Silicone paste turns after vulcanization into a substance similar to rubber.

Other sealing materials

In addition to the most common materials listed above, there are other means of sealing sewer pipes, such as:

Portland cement. This material is part of asbestos-cement and cement mixtures, which are used in the installation of elements of a cast-iron sewer system (chasing socket joints).
Oil bitumen, asphalt mastic - are used for the preparation of filling, with the help of which the joints of ceramic pipelines are sealed.
Epoxy resin is a common home sewer pipe joint sealant.
Technical sulfur. It is mainly used for sealing joints of cast-iron sewer pipes. Sulfur is pre-crushed, then heated to melting and poured into the joint hole.

Resin strand, jute, hemp rope. The scope of their application is the sealing of the sockets of cast-iron and ceramic sewer pipes. The most effective is the combination of resin-impregnated rope.

To seal the joints of the sewer pipeline, especially when caulking the socket joints of cast iron pipes, mixtures are often used, a component of which is Portland cement.

You can not discount another one of the oldest and simple ways sealing - sealing joint gaps with paint. And although this method is used less and less, it gives good results on any type of sewer pipe. The socket is clogged with a cloth, then paint is poured into it. The contents of the socket are compacted with a screwdriver or wire and left to solidify. For this purpose, acrylic, epoxy and polyurethane paints are recommended, since these types of paints are characterized by high water resistance.

We invite you to watch a video with an example of sealing an external cast-iron sewer pipe using a cabal (resin strand):

The choice of method and material for sealing sewer pipes is not of great importance, since all the means described above provide a high degree of tightness. Of course, the decision to use one or another sealant for sewer pipes will depend on the location of the sewer system and on the material of the sewer. But the decisive factor in the process of sealing is its competent implementation, which will guarantee the absence of leaks in the sewer system for many years.

Sealing of sewer pipes is necessary for the components of sewer systems, especially at their joints. To carry it out, you will, of course, need to use some kind of sealant designed directly for sewer pipes. Our article will tell you how to choose the right sealant and how to properly seal.

The Importance of Sealing

The sealing process should be taken quite seriously right away, since work is carried out with pipes, in contrast to the exterior finish, for example, the defects of which are quite easy to fix. To carry out re-sealing of seams that have undergone deformation, it will be necessary to carry out the same amount of work as for building a system from scratch.

During the implementation of the sewerage system, it is unacceptable for the following to occur:

leaks from inside sewer pipes;
leaks inside sewer pipes. So, for example, when laying an external sewage pipeline, groundwater is not allowed to enter.

Sealing materials

Tapes for sealing

Self-adhesive tapes with anti-corrosion properties and specially designed for sealing pipe joints are one of the latest modern means sealing. They have many positive properties:

Self-adhesive anti-corrosion tapes are highly effective and easy to use.
Sealing films, thanks to their high-strength polyethylene backing, are characterized by good handling properties.
They are used to protect various types pipelines in the complex, as they have dielectric and anti-corrosion properties. In addition, sealing films are used for sealing linear elements of sewer pipes.
Sealing using tape is possible not only when sealing the joints of sewer pipes, but also when sealing plugs, tie-ins, turning corners, bends, etc.

Before sealing a sewer pipe using sealing tapes, remember that they are sealed in the following sequence:

surface preparation is necessary for applying the tape: it must be dry, dust-free and clean;
it is necessary to ensure a constant tension of the tape, which is wrapped around the pipe, and also to exclude the appearance of folds and wrinkles;
the tape must be applied with a 50% overlap in a spiral, as a result of which the entire surface to be insulated will necessarily be under two layers of film.

Pro tip:

Such films do not tolerate exposure to UV radiation. That is why, when pipes for sewerage are located in a territory that is open to the sun, a protective layer must additionally be provided over the film.

silicone sealants

Silicone rubber forms the basis of silicone sealants. Silicone sealants in general are a composition of different substances that provide high sealing qualities. Silicone sealants have good adhesion to surfaces, while not requiring that they be pre-treated with primers.

According to the type of hardener in its composition, silicone sewer pipe sealant is divided into:

Acid. Acid silicone sealants are quite inexpensive, although they do not accept application to some surfaces that can interact with acids.
Neutral. In this regard, neutral silicone sealants are considered more versatile.

With the help of silicone sealants, it is possible to seal the joints of sewer pipes:

from metal;
from plastic.

After vulcanization, the silicone paste turns into a substance that is similar in properties to rubber. Moisture in the air is involved in the curing process of silicone sealant.

Pro tip:

Squeezing out the sealant is quite simple - using a mounting gun. In its absence, you can use an ordinary hammer by inserting its handle into the tube and pressing like a piston.

Sealing sewer pipes with other sealants

In addition to the above means, sealing pipes for sewerage is also carried out using other means:

Epoxy resin- at home, it serves, as well as glue based on it, the most common tool that is used when connecting sewer pipes.
Portland cement is a fairly common component of most sealing mixtures - it is used in the preparation of mixtures from asbestos cement and when caulking the connection of the socket of pipes for sewerage from cast iron.
Petroleum bitumen and asphalt mastic- will be required for the preparation of the fill, which is designed to seal joints and fill the sockets of ceramic pipelines.
Hemp or jute rope, resin strand- are used when sealing sockets of pipes for sewerage made of cast iron and ceramics. The use of a combination of rope and resin impregnation would be preferred.
Technical sulfur- used to ensure tightness, mainly, the joints of the sockets of pipes for sewerage made of cast iron. Before pouring into the joint slot, it should be crushed, and then heated until melting.

With such an abundance of materials, the question is unlikely to arise: “How to cover up the sewer pipe?”.

Classic socket seal

Traditionally, the joints of pipes for sewerage are sealed by caulking from the depth of the socket by 2/3 with a resin bundle, followed by pouring cement mortar into the remaining 1/3. In this case, the mass proportion of cement grade 300K to water will be 9:1.

A mixture of cement can be replaced with a mixture of asbestos cement, while the brand of cement should be 400 or higher with asbestos fiber content, the proportion of which is 2: 1. This mixture is prepared in advance, and immediately before the use process is diluted with water.

The laborious and tedious caulking of the sealant can be replaced by sealing the socket with cement, which has the properties of expansion and water impermeability, which is also capable of fairly rapid hardening, in parallel with self-compacting and expansion.

Docking sewer pipes, that is, the connection of sockets, is centered and completely filled with a solution that is made from expanding cement and water in a ratio that looks like this: 1: 2.5.

The choice of the sealing method itself is, in fact, of little importance, since all of the above means have a fairly high level of reliability. The main thing in this process will be a competent approach to the sealing process itself. After all, it is the sealing process that is the determining factor subsequently for the absence of leaks when the joints of sewer pipes are sealed.

Sewerage is designed to collect and discharge liquid waste of human life. Any leakage of polluted drains leads to unpleasant consequences - repulsive odors, damage building structures and even to the spread of dangerous infectious diseases. In order for the operation of the system to be reliable, the sealing of the joints of sewer pipes is carried out both at the stage of laying and during the maintenance of existing communications. Various technologies using sealants can prevent leaks and correct malfunctions in the functioning of drainage ways.

The sad consequences of a leaking sewer system

Why seal sewer pipes?

Leaks in pipes occur due to installation errors, as a result of wear of pipeline parts or mechanical damage associated with freezing or shock. Violation of tightness can occur due to improper design, non-observance of slope angles and docking of communications. Increased pressure occurs in the connecting nodes, which causes them to deform and, as a result, to leak.

Sealing joints between sewer pipes is carried out in order to:

Eliminate leakage to the external environment. Polluted effluents, falling into the ground, cause contamination of soil and water. The smell of sewage is nothing but a mixture of gases harmful to human breathing - methane, hydrogen sulfide, ammonia, released during decay of organic waste.
Prevent flooding of underground structures. A large amount of emissions can erode soils under foundations, fill cellars, basements or basements. Aggressive lineup sewage water causes corrosion of building materials.

Sewage washed away the base of the highway

Protect pipelines from external leaks. When groundwater is absorbed from the soil, sand and earth enter the system. They accumulate in the lumen of the pipes, additionally clog the sewer.
Extend the service life of communications. Rubber gaskets in the joints age over time, lose their elastic properties. The process is aggravated by temperature changes, alkaline or acidic reaction of wastewater. The tightness of the system is lost, dismantling and costly repairs are required.

To pick up best way sealing, take into account the type of sewer system, material and design of pipes. Installation must initially be carried out without errors leading to depressurization. Otherwise, the efforts to glue the joints will be wasted.

Principles of laying sewer networks

Engineering networks for wastewater disposal include internal, external and storm sewers. They are laid taking into account the requirements of SNiP 2.04.01-85. According to the rules:

The diameter of the pipes is selected based on the second flow rate of the liquid. In apartments, this is 30-50 mm for appliances and 110 mm for the toilet and outlets.
The optimal slope of the lines is 1-3.5 cm per 1 running meter so that the drains move freely by gravity, without lingering.

The system should be located with a slope towards a sewer riser or a common catchment point

The joints of the conduits are placed at an angle of 120°-135°. A sharp change in the direction of fluid movement leads to a decrease in flow rate and the formation of blockage.
The diameter of pipes for external sewerage is at least 150 mm, and the minimum laying depth is 0.5-0.7 m from ground level. When laying above the freezing point, the profiles are insulated.
For cleaning in places where the pipeline turns, revisions are arranged.
Drainage and storage systems must be airtight. To eliminate the risk of contamination of the aquifer, they are removed from the well at a distance of at least 15 m.

Sewerage is laid from plastic, cast iron, ceramic or asbestos pipes. Connections - socket or socket.

Important. If the laying standards are observed, blockages that provoke leaks will become a rare occurrence.

Types of pipes for drainage

The choice of method and material for sealing is directly related to the type of sewer pipe. For the installation of drainage systems in apartments and private houses, the following are most often used:

Cast iron pipes. They are mechanically strong, durable, resistant to corrosion. One end is formed in the form of a bell - a funnel-shaped extension that provides a quick and reliable connection.
Plastic. They are made of polyethylene, polyvinyl chloride, polypropylene, fiberglass. Products differ in ease, heat resistance. Service life reaches 50 years. The inner surface of polymer pipes is smooth, which reduces the deposition of suspensions. Inexpensive price and simple installation make it possible to widely use polymer products in private construction and for repairs in an apartment.

Plumbing polymer products for pipeline installation

Ceramic, asbestos or concrete structures are used much less frequently. They are difficult to transport and install due to their large weight, and in some qualities they are inferior to analogues made of cast iron or polymers.

Types of sealants used and the rules for their application

The construction industry produces sealing materials designed to seal the joints of sewer pipes. This:

Sealing self-adhesive tapes. Strips 3-15 cm wide are made from bitumen or rubber. They can be reinforced with fiberglass, covered protective layer from aluminum foil. They are used to reinforce coupling joints, tie-in points or sealing cracks in communications.

Self-adhesive tape

polymer sealants. Viscous formulations of silicone rubber, acrylic or polyurethane cure at room temperature. They have thermal and water resistance, good adhesion to the pipe material. Acidic, vinegar-smelling substances are not recommended for working with metal, as they cause corrosion. More expensive neutrals are safer in this regard.
Portland cement. Clinker, calcium silicate and gypsum powder hardens quickly when combined with water. To increase elasticity, modifiers are added to the mass. It is applied to sealing of designs from cast iron.
Sulfur technical. Inexpensive material available as a powder or lumps. It is crushed and mixed with finely ground kaolin, heated to a temperature of 150°C. In molten form, it is poured into the socket of cast-iron pipes.

Sulfur technical granulated

bituminous sealants. Compositions with additives of rubber or polymers are applied hot or cold. They have high elasticity, water resistance, but become brittle at temperatures below -35°C.
Thiokol sealants. Heat-resistant, elastic and durable compositions are very unpretentious, have high adhesion to plastic, metal or concrete. Suitable for gluing pipe joints various materials. The base of the adhesive is mixed before work with a hardener and a vulcanization accelerator.

Sealing tapes are designed to process joints from the outside. Take off protective film, slightly pulling, impose layers with an overlap. The pipe is wrapped above and below the joint by 15-20 cm. The surface is preliminarily cleaned of dirt and dust to ensure a snug fit of the strip.

Paste bituminous, polyurethane or silicone sealants are applied to the inner edge of the socket, connected to another part, left until completely cured. Most often, such compositions are used when assembling the joint of cast-iron and plastic pipes. The viscous layer ensures the tightness of the interface, compensates for the different degree of temperature deformations of the two materials.

PVC sewer pipe sealing

Installation of sewerage systems from PVC pipes consists of simple operations - the end of one element is inserted into the socket of another. Rubber o-ring ensures a tight connection. Over time, the material of the ring ages, and if the joint is under even a slight deforming stress, a leak occurs.

There are two ways to troubleshoot:

Dismantling of the structure with replacement of the gasket and subsequent assembly of the site.
Sealing a leaking joint with sealant without dismantling.

In the first case, a viscous sealant is used, in the second, a self-adhesive tape.

Assembling a system of PVC pipes with sealant

PVC sewer pipes are sealed in the following sequence:

Clean the surfaces to be joined from dust with a cloth moistened with a degreaser.
A thin layer of adhesive is applied to the inside of the socket and the outer end of the pipe to be connected.
Insert the element without effort, slightly pressing.
Hold the link for a few seconds until the composition dries.

Remove residual sealant with a tissue. Allow the adhesive to fully harden for 5-15 minutes.

Installation of sewer pipes using silicone sealant

Sealing PVC pipes without dismantling

To repair the joint without dismantling, free the site for free access. Use sealing tape, such as self-curing silicone repair tape.

Work is carried out according to the scheme:

The tape is stretched to increase the length by 3 times.
Wrap the damaged area with an overlap of up to 50% of the strip width.
Lay several layers as tightly as possible.

Seal joints with self-adhesive tape

Important. The repair tape is convenient because it seals even wet, uneven or greasy surfaces. Silicone rubber vulcanizes within seconds.

Sealing cast iron structures

To seal the joints of cast-iron pipes with their own hands, they use tarred tow made of linen or jute fiber. The work is carried out according to the algorithm:

Strands are wound on the end of the pipe.
The structure is inserted into the socket, the fiber is compacted with a special tool - chasing.
Fill the voids with a solution of Portland cement in a ratio of 9: 1 or fill with a viscous sealant.

Tow fill the joint at 2/3 of the height. When wet, the strands swell, taking up all the free space. You can use a mixture of dry asbestos fiber and cement in a ratio of 1:2. Before use, the ingredients are mixed with water.

Caulking joints of cast-iron pipes with tow and filling with polymer sealant

Sealing concrete rings

To prevent sewer septic tanks from becoming a source of environmental pollution, it is necessary to carry out thorough waterproofing concrete rings. Apply various ways sealing:

plastering the inner surface with moisture-resistant compounds;
spraying on the outside of an elastic film using a special apparatus;
coating with cold or hot mastics;
pasting with rolled materials;
impregnation with penetrating solutions;
sealing seams with bentonite expanding clay, bituminous pastes.

Coating waterproofing of wells

Ring processing gives a good effect bituminous mastics And additional protection with a clay castle. The clay around the septic tank is covered in layers, compacted with a manual rammer.

When laying and repairing the sewer system, professional plumbers recommend:

Rigidly fix the structures during installation using clamps.
Do not increase the slope of the pipe above 15%. If the angle is steeper, the water will not have time to wash away the waste that has settled on the walls.
Cracks in a cast-iron pipe should be sealed with a bandage dipped in cement mortar, and clamp.
If the system does not provide an angle of inclination for free flow, use special superchargers for sewage.
Regularly inspect drainage lines.

Assembling the sewer system in compliance with the norms, sealing critical joints and careful operation will help the structure last for a long time.