home Sewerage

Sealant for water supply pipes. Material for sealing the pipeline

The main problem in the operation of pipelines from various materials is the possibility of leaks at the junctions of separate elements of the main line. Particularly acute is the question of how and how the sealing should be performed sewer pipes, which usually have a bell-shaped structure.

Separately, it is worth noting the need to join the elements of sewer lines from heterogeneous roads, insert separate branches, in which it is impossible to use standard fittings. These sections of the pipeline are considered to be the most problematic, and the solution to the problem can differ both in value and labor intensity of the process.

First of all, it is necessary to consider the need for high-quality insulation of the connection of elements of external sewer lines.

What sealant for sewer pipes would not be chosen (it is only about high-quality materials), it will solve two main problems:

Prevention of leakage of sewage into the ground. The main task is not only to observe the norms ecological safety, but also to eliminate the possibility of flooding underground parts of buildings (cellars, basement rooms).

Equally important is the removal of sludge and the ingress of groundwater or parts of soil into the sewage system. Soil water can seriously damage the movement of sewage through the pipeline, in addition, there is the possibility of silt sewage.

Eliminating the consequences of any of these problems will require a considerable amount of work. At the same time, the costs of excavation work associated with the opening of the highway, practically do not differ from the cost of laying a new line. Therefore, it is economically feasible to purchase materials for sealing sewage pipes, and not to spend money on the work to eliminate accidents.

Main types of sealants

It should be taken into account that most types of polymer pipes do not require additional insulation due to the use of rubber butt seals. In general, the means of sealing the sewer pipes are necessary for the laying of cast iron or ceramic lines. The installation of the elements of such trunks requires the obligatory presence of a so-called compensatory expansion joint, which makes it possible to maintain the integrity of the pipes with certain shifts in the soil.

Whatever the sealant for sewer pipes would not be chosen, it is necessary to comply with the technology of its application, otherwise the use of even expensive materials can bring a zero effect. In practice, various types of materials are used that can ensure a high-quality sealing of joints, with most pipe sealants known and effectively used by masters several centuries ago. Recently, polymeric substances and various resins, including epoxy ones, have been added to the list of sealing compounds.

All existing sealants can be divided into two main classes:

Means applied in the form of paste (glue).
Self-adhesive sealing tape.

Both types of materials can reliably seal and secure the connections of fittings and individual sections of the pipeline. They are used not only for the installation of sewerage, but also for the implementation of tie-in in the mainline, the implementation of emergency repair work, the elimination of emergency leaks.

Paste-like materials based on various silicone rubber. They feature high sealing ability, they can provide resistance to possible deformations. In the process of polymerization, silicone sealants are converted into a rubber-like substance, characterized by high resistance to various influences.

Can be used for laying and repair of sewer pipes from metal (steel, cast iron), ceramic and polymer pipes.

There are two main types of silicone:

Neutral, which is used in most cases, ensures reliable sealing of the elements.
Acid silicone is necessary for the device of the trunks working with aggressive environments.

Hermetic sealing of sewer pipes with silicone is affordable, while ensuring the quality and durable work of the joint, to date, this material is most popular both among professionals and in solving various household issues.

This type of sealant is a metallized scotch on a bitumen-rubber base. Aluminum or copper layer provides sufficient strength and reliability of sealing.

To achieve the required quality of connection with a similar tape, you need to remember the basic rules for its installation:

Before use, you must carefully prepare the pipes or fitting, on the dusty or damp surface the tape will simply not be glued.
The winding must be spiraled, with an overlap of approximately 50%, this will ensure that the two-layer coating can be covered with a tape of the entire surface.
The winding should be carried out with a significant stretch of the self-adhesive, this will prevent the possibility of its spontaneous adhesion after removing the protective layer and ensure the uniformity of the coating (no wrinkles and other defects).

To date, self-adhesive tapes for sewer pipes are considered to be the most simple to use material, while they provide a high degree of sealing compounds of various types. They make it possible to significantly simplify the elimination of emergency leaks.

Recently, plastic pipes have been used to arrange water supply. But, unfortunately, these building materials can not be laid without threaded joints. And this method of installation necessarily involves rewinding or another method of compaction.

Any beginner master will naturally raise the question: "What better to choose for work - old" proven "methods or a modern sealant for water pipes?".

This is an important issue, because the sealing of the water supply pipeline is the main factor that determines its reliability. A modern construction market offers a large number of synthetic sealing and sealing options.

But, are all these products for pipe sealing as good as they seem at first glance? Many sealants use synthetic components, and as far as it is harmless for water supply, it is worthwhile to find out before starting the installation.

Why seal

Before selecting a sealant, you need to understand why you need a seal for the water supply system.

If joints with a threaded thread are used in the water supply main, a certain level of pressure will still be created when pumping the liquid. This means that the liquid in small droplets can leak in the joint area.

When a comparison is made between a plumbing and a hydraulic main, for the first option there are more methods, because the details for this task have been provided in a more extensive choice.

Many under the essence of "sealing" understand the simple elimination of leaks on the pipe. But, in reality, in order not to eliminate accidents of this kind, it is necessary to observe in detail the technology of carrying out treatments on the tubular range.

This work should be dealt with in the following situations:

when laying pipes of water supply to the pipe;
when installing a threaded connection;
when leakage is isolated.

With what types of materials for water supply can work

Before installing the water supply system, it is worthwhile to study in detail the materials that are used for sealing. Consider them.

Liquid Sealants, based on synthetics. Silicone sanitary sealant for water supply pipes was developed not so long ago. Its distinctive feature is the ability to save plasticity after drying.

Silicone sanitary sealant after installation completely covers the bends of the parts. After when he "collects" the final forms, he forms a solid cast gasket on the pipe.

And it should be noted that this design is suitable even for a joint operating under strong pressure. Even a strong water pressure will not move this silicone protection from its place.

Having chosen silicone sealant, one should take into account that not every brand of it can be used for contact with hot water. This problem arises from the fact that these materials under the influence of high temperature soften.

And also it must be borne in mind that this type of sealant has a certain level of toxicity. Accordingly, its use must be carried out very carefully.

Watch the video

When installation works it is necessary to take care of protective equipment (in this case, gloves and respirator are meant). Such requirements are dictated by the fact that during the hardening of this product, highly concentrated acetic acid evaporates. This sealant can be dangerous.

The merits of silicone sealant include: ease of use; protection from corrosive processes; creation of lubricant.

This type of sealing is almost not used independently, but combined with fibrous formulations. In its pure form, this version of sealing is used only in a non-pressure line, otherwise it will simply "fly out" from the thread.

But all the above mentioned minuses are not present anaerobic sealant.

It is able to congeal without access to air, but only when installed on a metal base. These two conditions can be created in the middle of the connection on the thread. In this case, the dimensions of the sealing product do not change.

This sealant is distinguished by a high level of thermal and chemical stability. And the pressure that he can bear is not less than the pipes themselves withstand. These gels are adhesive to metal, respectively, the joint is firm and stiff, even if it is not tightened very tightly. On the open surface it does not harden, and its excess is easily eliminated with rags or washed off with water.

On the given photo it is visible, that the sealant after hardening has turned to a powdery mass. When applying a new sealing layer, it is not necessary to remove the remnants of the previous treatment, this will not affect the quality of the connection.

Fum tape. Water supply perfectly protects threads from corrosive formations, does not undergo corrosion. This tape has a smooth surface, and this facilitates the assembly process. Unfortunately, this material does not tolerate vibrational and mechanical loading.

For sealing, this tape is mainly used for threaded connections. But, for a structure located on the weight it is not suitable, because of poor resistance to vibration. Vibration caused by the water flow can weaken the tape, and therefore seal. In the end, under such conditions, a leak is formed.

During the processing with this tape, it is very tightly wound on the end parts, so the thread can be screwed without additional tools.

Solid Sealants. This is a very common form for sealing connections in the construction market, which is not very popular with plumbers. For sealing, such products are used very rarely.

Watch the video

Dry flax. This option is also not very successful. Organic fiber is hygroscopic, and such joints are not very reliable. The use of flax and paint is more reliable. Thus, the fiber is protected from moisture, and this connection lasts a little longer.

Dry flax for the design of water supply began to be used for a long time, and in this case, this material can rightly be called one of the "pioneers". Initially, flax was used together with hemp fiber, but soon the last component was abandoned.

To date, linen in the water supply network is not common. As it was already said - it is a natural product, and from contact with moisture it quickly turns sour. High temperature also affects negatively the flax. Because of this, it loses its strength, and "sips" from the joint.

More reliable for sealing called plumbing, but it is expensive. Although the strength of absolutely not inferior to the Fum - tape. Of the shortcomings of this material not only its high cost, but also some complications of installation actions.

To make the sealing, you need to put some effort. These requirements dictate installation rules that stipulate that the thread should be placed evenly on the elements. If these rules of work with the sealant are not taken into account, then you can simply spoil the thread on the pipe.

If you did not have to work with this sealant before, then it's better to practice beforehand on an old piece of pipe. Having completed a couple of "triples" of windings, you can get the right skill.

Basic requirements for the formulations

Sealant for plastic and other water supply pipes is not difficult to choose. The main thing that you need to consider is that the suitability of a product is determined by the following criteria:

Compliance with the characteristics and material of the pipe production. This is an important factor, because the composition suitable for plastic networks is hardly suitable for working with a metal pipeline. The packing container always contains information where there is detailed instructions on use. It prescribes what materials this composition can work with, and with which it does not.
Resistance to adverse effects. Sealants for plastic water supply systems should be distinguished by a high resistance to the aggressive influence of the chemical environment.
Long service life. This is also a very important factor, and it directly depends on the service life of metal, plastic and cast iron networks. With a reliable seal, any system retains its original characteristics for a minimum of five years. A high-quality compounds this term is extended to ten years. Although the price in this case will be significantly higher, if compared with the budget options.
Elasticity. After hardening, the sealing compound on plastic and other systems must retain plasticity. So it will be easier to resist the temperature drops and other factors.

Sealing process

The sealing process can be considered by the example of winding a sealant such as flax. First, paint the thread with paint. The pipe itself must be carefully prepared beforehand. It must be cleaned with a steel brush and degrease with gasoline.

After applying the paint, you need to wait a little, so that the paint is slightly dried, while it becomes sticky. Then the threaded joint is covered with a small amount of flax. Strands are better to take without large fibers, so winding will be more uniform.

Wind the flax with thin layers, which are slightly blurred with paint. Paints a lot to impose is not necessary, when assembling the pipe the paint will completely impregnate all the flax.

Then start to slowly twist the connection. It is not worth much effort. Also, when squeezed, the paint can be scraped onto the floor, so as not to spoil the coating on the floor, it is better to cover it with old newspapers or a rag.

The use of pakli with special impregnation is considered to be the most simplified method of solution for the design of a water supply network. Many professionals prefer this method. Starting work with this compaction, you need to remember these recommendations:

The tow is obliged to be soft and must not contain any inclusions.
Working with impregnation, you need to act carefully, its traces are difficult to deduce.
All visible parts after work with the sealant must be carefully removed.

It is difficult to determine the exact number of windings. In this situation, you will have to act through the acquisition of experience. And it is even better to make trial windings, and to test them with water. This way you can set the exact amount of winding.

This is very important, because if there is not enough of it, a leak will inevitably appear. If the pakli turns out to be too much, then during the tightening, the thread may simply fail, or the pipe may be damaged.

Watch the video

By sealing the water supply system, each will independently determine the options for the solution, based on their financial and taste preferences. The most important thing to remember is that when choosing a sealant for water supply pipes, you only need to acquire a quality composition.

(3 estimates, average: 5,00 of 5)

The discussion is closed.

For the implementation of connections of sewerage communications, it is necessary to use additional adhesives that provide a tightness of attachment. Basically for this purpose, a sealant for sewer pipes is used.

Necessity of sealing

Sealing is the provision of complete obstruction to the surface of gases or liquids from pipes. This process is mandatory for the construction of sewer systems. Some of the home masters neglect sealing, but re-holding it is considered a more difficult task than the primary treatment of tubular joints.

Why seal plastic and cast iron sewer pipes:

To prevent leaks, which arise from the strong pressure of sewage;
To protect the connections from changes in ambient and water temperatures in the pipes;
To ensure the protection of pipes from penetration of water from outside. It can be the groundwater, precipitation, etc.

Despite the external strength of joints, they need additional support.

Kinds

There are the following sealants for connecting sewer pipes:

Special tapes;
Silicone compounds;
Technical sulfur;
Episkid resin;
Ropes made of jute or hemp;
Portland cement;
Different mastics.

Self-adhesive tapes are a novelty of the market, and are used mainly for plastic pipes internal sewerage. They are known for their durability and ease of use. In addition, if you have installed metal-plastic pipes, these tapes can become an additional protection of joints from corrosion processes. They are used not only to protect against leakage at the connection points, but also to strengthen the turns, plugs of the mortise elements, etc.

Photo: self-adhesive aluminum tape

Silicone sealants are the most popular among all masters. They can be selected by color to the pipe. They are used to seal fistulas in plastic and metal pipes, they also help to strengthen the connection, to give it rigidity. The composition of silicone sealants for sewer pipes are divided into two types:

Neutral;
Acidic acid.

Neutrals are known for their composition, which does not destroy pipes that are afraid of "mineral" components. At the same time, acid costs a little less, but are not used on fragile pipes, as well as those that are destroyed under the influence of certain acids.

Silicone sealant for external and internal sewer pipes is characterized by the following positive qualities: it is sanitary composition (prevents mold and rot), protects PVC pipes from leaks, when hardening resembles rubber. In addition, silicone compositions are known as quick-setting, i. E. those that freeze a few hours after use. Most brands for complete fixing are needed from 4 to 6 hours, although there are those that dry up only after 24 hours. Also, silicone can be applied to pipes without disassembling them.

Video on the topic:

Technical sulfur is used mainly for cast iron pipes. It is a rather aggressive but very durable sealant. At the same time its cost is an order of magnitude lower than self-adhesive tapes and silicone adhesive compounds. Portland cement is also used for the same purposes. It should be noted that the latter is increasingly replaced by serocene or sulfuric concrete. In most cases, these materials are used for sewerage in large industrial facilities or apartment buildings.

Photo: Mixture for sealing from industrial sulfur

Epoxy resin - a special type of sealant, which is very widely used not only in the sewer, but also in the construction various designs, requiring additional impregnation. For example, it is used for fiberglass, as a cold hardener, creating hot curing, and even simple household glue.

In water supply and drainage communications it is used for ceramic pipes and cast iron, which need more serious connection than plastic pipes. The advantages of epoxy resin include its durability and resistance to more than 50 aggressive chemical compounds. The resin is unstable only with respect to nitric and sulfuric acid, acetone, methyl ethyl ketone and hydrogen peroxide. Fluid gases also adversely affect it.

Previously, jute, treated with resins, was used to seal various household pipes. They act as well as self-adhesive tapes, but differ significantly in the principle of fastening. The fact is that jute is an ordinary string made in a special way. But if it is treated with certain resinous substances, it becomes quite strong and durable hermetic means for the funnels of sewers made of cast iron or ceramics.

In the book Pereshivkin in some detail describes the variety of mastics for sewer pipes. For different types of pipelines, the following mastics can be used: bitumen-talc, bitumen-asbestopolymer, bitumen-rubber, bitumen-polymer, and other types.

How to use

Regardless of the type of hermetic composition chosen, you need to pay special attention to the condition of the pipes. You must first clean them from dirt and degrease, the surface to be treated must be dry, so if you repair or replace part of the working pipeline, there is a reason to turn off the water supply.

Photo: Sealing of sewer pipes

Consider the principles of hermetic sealing sewage pVC pipesusing tape and silicone sealant. Self-adhesive tapes are glued to the joints at a constant angle and tension. This is necessary in order to prevent air layers from forming on the fistulas or sockets on their surfaces. The overlap overlap should be half the width of the tape.

Now the most popular are silicone sealants of Sinicon brand, which are used for processing different types of pipes and sealing compounds, cracks, fistulas. Before starting work, be sure to check the surface for cleanliness and dryness, then use a special gun to distribute the silicone on the crack or joint. Do not need to smear it further, apply the mixture in several layers, and slightly outside the binding. In this case, it is impossible to wet the pipes not only before and during operation, but also after it. Additional instructions for the use of silicone sealants are available on the packaging of the selected product.

When sealing joints at the initial fastening, the sealant is actually poured into the socket socket. Silicone sealant for sewer pipes, like self-expanding cement, can take the form of a slot, so you do not need to use extra precautions in the form of bands or bundles.

The sewage system must be airtight. If waste water enters the environment, they can cause serious harm. Seeping into the ground, the effluents contaminate fertile soils, get into aquifers and spoil drinking water. If impurities leak into the room, they poison the air and damage the health of people. The solution of the problem is a good sealant for sewer pipes. We'll figure out how to choose it.

Sewage is sealed securely during the installation phase. In operation internal system regularly inspect, in time to detect and eliminate leaks. Wastewater should not flow, and in the sewage system, nothing should come from outside, because this can disrupt its operation and lead to serious breakdowns.

Particular attention should be paid to the sealing of pipes located underground, since they are much more difficult to repair if leaks occur. If the operation of the system is disturbed by the ingress of groundwater into it, it will take a lot of effort to determine this.

Repair of the underground part of the sewage system is almost as laborious and expensive as installing a new pipeline section. It implies a large volume excavation works, replacement of damaged system elements

Thorough sealing during construction sewage system prevents problems such as:

Leaks outside. Getting into the soil, sewage can pollute water in drinking wells, cause serious illnesses. The smell of sewage in the premises is also dangerous, because decaying organic substances emit harmful to humans gases: hydrogen sulphide, ammonia, methane.
Flooding of buildings and structures. With strong leaks, soil erosion is possible. Sewage floods the foundations, cellars, cellars, basement floors. Because of the high content of reactive substances, they accelerate the destruction of building materials, provoke corrosion.
Leaks in the system. If the system receives atmospheric or groundwater, the pressure in the pipeline increases. Because of the strong pressure of the drains, the operation of the pipes is disrupted, and the treatment or storage facilities can not cope with the additional load and fail.
Leakages at the joints due to temperature changes. If the system is initially mounted qualitatively, the joints are reliable and do not leak even without additional compaction. However, processing is still necessary, because The temperature differences with time lead to a reduction in airtightness.

For the installation of sewage systems use pipes of different materials, and for each type of pipe should be selected suitable sealant. Also, the choice depends on the technology of installation and the purpose of each individual element of the system.

The main types of sealing materials

To seal the connections of sewer pipes use a lot of different materials:

sealing tapes;
polymeric sealants;
technical sulfur;
jute and hemp ropes;
epoxy resin;
portland cement;
mastic based petroleum products.

Each sealing material has its own varieties, features, purpose and scope.

Option # 1: sealing tapes

There are conventional and foil self-adhesive tapes. They are designed to seal the connections of water and sewer pipes and have unique properties. The composition of the tapes includes bitumen-polymer materials, so they are absolutely waterproof.

Sealing tapes are multilayered. Their basis is polymeric materials. They are applied to layers of bituminous compounds that protect the elements of the sewage system from the effects of negative environmental factors

Depending on the operating temperature range, there are three main types of tapes:

Summer (labeled with the letter L). The tape can be used at temperatures up to + 300 ° C. It is suitable for insulation of pipelines, through which hot liquids are pumped.
Winter (in the marking - the letter Z). The temperature range at which the material does not lose its sealing properties, from -200˚ to + 100˚С.
Heat-resistant (the letter T in the marking indicates the properties). Such a tape is used for insulation of pipelines, through which liquids with a temperature of up to + 1500 ° C are pumped. At the same time, the ambient temperature can range from -100 to + 300 ° C.

For insulation of sewer pipes inside the premises, a summer or winter sealing tape is suitable, and for outdoor works it is better to choose a winter one.

The sealing tape is applied with a mastic layer inside. It is wound lapally spaced, evenly, achieving perfect smoothness and tightness of joints - without wrinkles and distortions

The advantages of the material include such properties:

No deformation. If the tape is applied correctly, no bubbles appear under it.
Dielectric properties. The tape protects against electrical stress, which often becomes one of the reasons for corrosion of metal pipelines.
Stability to all kinds of influences. The material does not exfoliate, differs by mechanical strength, resistance to chemicals, soil corrosion. It is so reliable that it can be used even when laying oil pipelines, so for the sewerage you can just be calm.

Unique characteristics and strength of sealing tapes allow to use them at any temperatures and practically in any conditions. The service life of the adhesive coating is at least 30 years. During this time, the tape does not lose its properties and retains 100% tightness.

Self-adhesive sealing tape is suitable not only for sealing the joints of the pipeline. It is used to seal frames, taps, plugs, etc.

To the material does not lose its properties for a long time, it must be correctly applied. The preparation of surfaces is very important. They are thoroughly cleaned from old coatings, degreased and dried.

It is necessary to monitor the uniformity and tension of the tape during the winding of the pipe and make wide overlaps equal to half the width of the material. If the tape is applied correctly, the surface will be covered with two protective layers.

Option # 2: polymer sealants

To process the joints of sewer systems, silicone sealants are most often used. Another option - polyurethane compounds. They are universal, suitable for sealing and gluing the most different designs and elements. The optimal solution is to buy a special sanitary compound based on silicone, selecting it taking into account the material and operating conditions of the system.

The composition of silicone is rubber, thanks to which the finished material is highly elastic and adheres to any substrate. When using silicone sealants, it is not necessary to treat the surfaces with primers to improve adhesion.

Silicone sealants are considered the most reliable for the processing of plumbing systems, but there are other options. When buying carefully read the descriptions and instructions of manufacturers

Depending on the hardener composition, there are two main types of silicone sealants:

Acidic. The main advantage of acid formulations is an acceptable price with good quality. The disadvantages are limited use: sealants are not suitable for all surfaces and can enter into chemical reactions.
Neutral. These hermetics contain no acids, so they do not destroy the pipes. This greatly expands the scope of application and makes the materials universal. Less - more high price, than in acidic compounds.

Silicone sealants are usually used for processing joints of plastic and metal sewage pipes. After polymerization, they form dense, elastic coatings resembling rubber. Due to their high elasticity, they tolerate loads well and do not give cracks.

Sealants are packed in solid tubes. To squeeze them, you need to make an effort. If there is no special gun, you can use the hammer handle instead of the piston

Sealants are applied by means of mounting guns squeezing the contents of the package. Joints are processed along the entire circumference. The line must be continuous so that no gaps remain. After applying the compound, the seam is gently leveled with a special soft spatula or a wet finger in the glove.

Option # 3: technical sulfur

Technical sulfur is produced by processing petroleum products. It can be powdered or lumpy and sold in construction stores. it a good option for sealing joints of cast-iron pipes. Additional plus - low price.

Sulfur is a hard and brittle sealant. To make it more elastic, do not overheat the material. Also in the composition for sealing, you can add ground kaolin (in the ratio 1:10)

Sulfur is pulverized (if the lump is purchased), heated to the melting point (about 130-150 ° C), then poured into the space of the socket. When the material solidifies, it will turn into a dense waterproof mass. Its only drawback is low elasticity.

Option # 4: Portland cement

Portland cement is indispensable for many types of work. The composition of the material includes clinker, gypsum, calcium silicates. The dry mixture is diluted with water until a thick solution is obtained. It quickly solidifies, forming a high-strength, frost-resistant and water-repellent monolith.

Portland cement starts to harden for 5-10 minutes, so the solution should be prepared immediately before use, and the work should be carried out as quickly as possible

Add special additives to the cement mix to increase its elasticity. This allows to securely seal the joints of cast-iron pipes. The material is resistant to temperatures, well tolerates freezing-size, so it is successfully used for outdoor sewerage.

Option # 5: epoxy resin

Epoxy resin - a universal adhesive that can help out and install sewer. To prepare a sealing compound, the epoxy resin is mixed with the hardener. The proportions depend on the brand of material and are indicated in the instructions for use.

Be careful when preparing the sealing compound. If the hardener is too much, the finished mixture can become hot or even boil

When mixing resin and curing agent, it is important to follow the manufacturer's recommendations strictly, otherwise the pour time of the formulation and the performance properties of the finished coating may change.

Option # 6: bituminous mastics

Sockets of ceramic pipes are often poured with bituminous materials. Excellent proven themselves bitumen-rubber, bitumen-polymer mastics. By the type of application they are divided into cold and hot.

Cold and hot mastics - an inexpensive sealing material, freely sold in building supermarkets. They are elastic, durable, resistant to chemicals

For the sealing of pipes it is better to use the compositions of cold application, t. they are much easier to use, and the work itself is safer. The only disadvantage of such sealants for sewage pipes - they are somewhat more expensive.

Option # 7: jute and hemp ropes

Traditionally, hemp and jute ropes, resin strands are used for sealing joints of cast iron and ceramic sewer pipes. These are cheap and easy-to-use materials, however, in terms of their technical and operational properties, they are substantially inferior to modern sealants.

Jute ropes look more attractive than hemp ones, however, the materials differ little in their performance properties. It is better to give preference to hemp, because it is cheaper

For sanitary sewer pipes, it is better to use sanitary silicone or polyurethane sealants. Their quality and durability can vary greatly depending on the manufacturer, so pay attention to brands and choose the most reliable ones.

8 best manufacturers of sealants

Sealants of trade marks Ceresit and Moment beyond competition. They are reliable, durable, highly elastic and adhere to any surfaces. If there is an opportunity to buy the compositions of these brands, do not hesitate, because you will pay not just for a name, but for a real quality.

There are 6 more brands that produce decent products:

Ciki Fix. Under this brand, quality transparent sealants are manufactured, which are perfect for metal and ceramic pipes. The finished coating is resistant to detergents, solvents.
Belinka. These are popular one-component compounds for sealing joints and joints. They are resistant to negative influences, they are strong and elastic.
Tytan. The trade mark Tytan produces quality sanitary sealants based on silicone. If you need a high-strength seam, you should give preference to the polyurethane composition Tytan Professional.
Krass. Under the Krass brand, quick-hardening, one-component sealants are produced, which after hardening form dense seams that do not shrink.
S 400. A distinctive feature of sealants of this brand is an increased biological stability. The composition includes a large number of fungicides, preventing the appearance of fungus and mold at the seams.
Dow Corning. Sealants of this brand are so firmly fasten the surface that they are used as glue. They are thicker than the compositions of other brands, penetrate deeply into the seams and joints.

Sometimes, sealants are subject to increased requirements for any particular performance. In such cases it makes sense to carefully study the descriptions of manufacturers and consult with sellers.

When buying, pay attention to the presence of antifungal additives in the sealant. Microorganisms reproduce particularly well at sewage pipe junctions, and a high concentration of fungicides is needed to prevent this

For example, the best sealant for rooms with increased fire hazard - the universal composition of Krass; for complex connections - "Moment of Herment"; for ceramic pipes - Belinka Belsil Sanitary Acetate; and for rooms with a constant high humidity - Ceresit CS 25 or S 400.

Video materials on the use of sealants

In the process of sealing the sewage system, many questions arise. We offer video materials that will help to cope with difficulties and independently perform all the work.

Instruction on the sealing of sewer pipes using silicone sealant:

We offer video instruction on the correct mixing of epoxy resin and hardener:

Video tutorial on sealing the socket of the cast iron external sewage system with your own hands:

Detailed instructions for sealing the socket of sewer pipes during the transition from cast iron to plastic:

Whatever type of sealant for sewer pipes you choose, you need to carefully prepare the surface and perform the work well. On the pipes there should be no cracks and fistulas. Before sealing, they are cleaned, repaired, degreased. At work it is necessary to adhere strictly to technology, and after its termination to wait the put time before congealing of structure. Only after this, the system can be operated as usual.

1.
2.
3.
4.
5.

The reliability of the sewage system is a quality that can only be talked about when the structure does not leak. The need for sealing is not worth even discussing - it is needed, and the sewage system should be assembled in such a way that nothing will flow.

Of course, the sewage pipeline can leak and because of the wear of the pipe, but practice shows that in the case of poor quality assembly, the joints primarily suffer. The places of leakage should be sealed both when installing a new system, and after repairing the old one.

In the olden days, linen winding and oil paint were used for sealing. To date, there are many sealants, and all of them can be found on the market. About what sealers are, how to choose a suitable sealant for sewer pipes, and how to seal the sewer pipe will be discussed in this article.

Self-adhesive tape for sealing sewer pipes

Self-adhesive tape is one of the latest developments in this field. Such a sealant for sewerage is a white film of different width, wound on a spool.

The material can boast of many advantages:

stability before electricity;
good resistance to corrosion, which protects pipes from rust;
ease of use;
high efficiency and reliability.

The tape can be used not only to seal the connection points of sewer pipes: it is often used when working with various shaped elements and fittings. Self-adhesive tape has one drawback, not allowing it to be used everywhere: complete lack of stability before ultraviolet. To create a sealed connection in a street illuminated by the sun, the tape will have to be covered with protective material.

When applying the tape, you must observe certain conditions. First you need to carefully prepare the pipes, so that the work was done at the proper level. Pipes are cleaned of dust and mud layers, and after that they need to be dried well. It is desirable to cover the pipes with a primer before operation.

When the pipes are processed, you need to take the tape and wrap it around the pipe with a spiral. The result should be the following: the self-adhesive tape will be tightly wound on the pipe, and any, even minimal folds, will be absent. To ensure maximum tightness of the tube, the tape is wound with a half overlap, as a result of which the tube is covered not with one but with two layers of film.

Silicone sealants for sewage pipes

Of course, self-adhesive tape is a very good material for processing joints, but other substances are used in construction. For example, silicone sealants are special materials that are applied to a site that requires sealing, and freeze when exposed to oxygen.

Silicone sealant for sewer sewer pipes has several advantages:

good adhesion to pipe material;
high resistance to different temperatures;
excellent resistance to moisture;
excellent mechanical strength;
long service life.

The sealant for sewer pipes can be made from different materials. The most popular material is silicone, or siloxane. The composition of the material includes silicone rubber and some additives that help increase the adhesion and strength of the sealant. In the manufacture of the material, vulcanizing impurities are also used, which make it possible to accelerate the polymerization of the substance. As a result, after the application of silicone sealant, an elastic material is obtained at the output, with its characteristics similar to rubber.

Silicone sealant for PVC sewer pipes can be divided into two types: neutral and acid. This classification depends on the hardener used in the material. The cost of acidic sealants is usually lower, but they should be used only with certain surfaces.

Neutral sealants are suitable for any coating, so they are used in difficult cases. In general, silicone sealants work perfectly in conjunction with plastic and metal pipes.

To extrude the sealant, a special device is used - an assembly pistol. Sometimes this device is missing, and they can not be used - in such situations, the sanitary sewer sealant can be removed with a hammer: its handle is inserted into the tube and pressed, acting on the principle of the piston.

What and how to seal better

The pipes can be sealed with other materials. In construction practice, there are often cases of the use of technical sulfur, epoxy resin, hemp rope, resin strands, asphalt mastic, etc.

The epoxy resin is most often used. For its use as sealants it is necessary to use cold hardeners (for example, polyethylene polyamine) and hot curing (often used maleic anhydride). Their number can vary from case to case, but on average the proportion can vary from 10: 1 to 5: 1. Epoxy resin is most often used when working at home.

Sealing the release of sewage can be carried out and technical sulfur. To use it it is necessary to grind, heat to a plastic state, after which it is poured directly into the internal cavity of the joints. Such a compound is made from portland cement, only in this case it is necessary to prepare the solution.

The sealing of the sewer pipes is also carried out with the aid of a tarred hemp rope, which is excellent for working with cast iron and ceramics. Asphalt mastic and petroleum bitumen are obtained in the form of pouring, which seals well the joints of ceramic pipelines.

Sealing of cast-iron pipes

The connection of the pipes from the cast iron is as follows: the next pipe is inserted into the socket of the fixed pipe, and the place of their connection is sealed. To make the connection sealed, you can use the technology described below.

In the gap between the connected pipes, about 2/3 of the depth, a linseed impregnated tow is inserted. When it is in the joint, it must be sealed in the socket - zachekanit. Linen can be replaced with hemp, but it will have to be treated with resin. After these actions, a mix of portland cement and water (9: 1) is laid on top of the pack, and this sealant is placed in the free space of the joint.

If necessary, cement can be used to create a mixture. In this case, you need to add asbestos fiber, and the proportion will look like 2: 1. Just before pouring into the pipe, a little water is added to the mixture to get a kind of "dough". Replace all of the above materials can be silicone sealant, just poured into the gap between the pipes. To prevent too rapid drying of the sealant, the place of application is closed with a damp cloth or polyethylene.

Sealing joint of cast-iron and plastic pipes

When there is a need to repair the old sewer system, which used pipes made of cast iron, many owners are trying to take advantage of the convenient moment and replace the pipes with plastic ones. But only in the end the question arises: how to seal sewer pipes made of different materials?

To perform such an operation, you will have to act on such an algorithm. First, adapters are used to connect pipes from different materials. Cast iron pipe must be carefully cleaned, and for better sealing the socket is degreased. Its internal cavity is subsequently sealed with sealant, like the outer part of the structure. The adapter is arranged in the socket, after which it is necessary to wait until the sealant has solidified. Then it is possible to insert pipes with each other, and they will be qualitatively sealed. After a while it is necessary to test the sewage system for leaks.

Conclusion

Sealing sewer pipes is not the easiest process, but there is nothing special about it: just follow the instructions and know what should happen in the end. Of course, it is important to choose the right sealant for sewage pipes. If everything was done correctly, then the sewerage will work perfectly, providing a high degree of comfort to users.