Independent replacement of sewage pipes in the apartment:

The sewage systems of most of the houses of the old housing stock are made of metal pipes and cast-iron fittings, which are highly susceptible to corrosion, as well as the deposition of lime and fatty deposits. Over time, the impact of these factors can lead to a significant decrease in the internal cross-section of the pipes, as well as the formation of through corrosion centers on their walls. In order to prevent such consequences, a complete, or at least partial replacement of sewage pipes in the apartment with your own hands must be performed during the planned repair of your home.

Re-equipment of the internal sewerage

In order to substantively answer the readers' question: how to change sewage pipes in an apartment, this article will discuss the main technological aspects of the execution of works on dismantling old and installing new elements of the inner sewage system.

Also, the reader will be offered detailed instructions, which provide useful tips and recommendations for the implementation of such work in residential apartments of high-rise buildings.

Preparatory work

Complete re-equipment of domestic sewage is a serious matter, requiring a competent approach, initial theoretical knowledge and the presence of certain skills in plumbing.

Before replacing the sewer pipes in the apartment, it is necessary to ensure compliance with a number of necessary conditions:

1. Draw a detailed diagram of the new sewer network of the apartment, indicating the size and diameter of all pipes, sewers, adapters, elbows and other fittings.
2. Turn off the water supply of all plumbing fixtures, then remove all remaining water from the water traps.
3. Provide full access to all elements of old communications. If necessary, you need to dismantle plumbing fixtures that restrict access, remove the decorative panels of the exterior, and, if necessary, open the floor or wall covering.

Tip! Immediately before disconnecting the drain collector from the vertical riser, it is recommended to turn off the water supply throughout the water riser and ask the neighbors to temporarily not use the sewage system.

Materials and components

The answer to the question: how much does it cost to change the sewage system in an apartment, mainly depends on the amount of building materials needed. The acquisition of all pipes, fittings, seals and fasteners must be performed in accordance with the existing communication scheme.

In most cases, the following set of materials and accessories will be needed to replace the internal sewage system:

1. Plastic sewer pipes made of rigid polyvinyl chloride or polypropylene with a diameter of 110 mm and 50 mm.
2. A set of rubber seals for sockets, as well as a set of rubber cuffs for connecting pipes of different diameters and connecting various plumbing fixtures and household appliances.
3. Sanitary silicone sealant with antifungal and antiseptic additives.
4. A set of fittings, adapters, elbows and elbows necessary configuration.
5. Plastic clamps with fasteners for fixing pipes on walls and supporting structures.

Tip! Owners of apartments located below the third floor are encouraged to purchase a non-return valve for the sewer system, which must be installed between the vertical riser and the drain collector.

Dismantling old pipes

The old sewage pipes in the future, it is difficult to find any useful use, so when dismantling does not require compliance with the special delicacy. The only thing you should pay attention to is the junction of the drain collector and vertical riser.

On the riser, as a rule, there is a cast-iron tee with a socket in which a drain collector is inserted. Most often, this compound is smeared with cement mortar or flooded with molten sulfur. When removing the collector, care must be taken, since the cast-iron tee is quite fragile, and if it cracks or cracks, it will be necessary to replace the entire riser.

Tip! It should be noted that the complete replacement of the vertical riser is not the worst solution, since it will significantly improve the efficiency of the entire sewer system of a residential building. In addition, in this case, the price of materials and the cost of work is proportionally distributed to all tenants of the staircase living on this riser.

Installing a new sewer system

Installation and connection of a sewage system made of plastic pipes according to a pre-designed scheme does not present any particular difficulties, therefore it can be performed on its own in a short time.

To achieve a quality result, in the process of work it is necessary to follow simple rules and recommendations.

1. Any replacement of sewage pipes in an apartment should begin from connecting to a vertical riser or drain manifold and end up connecting to a drain fitting of a sanitary fixture.
2. The pipes of all sewer pipes, tees, outlets, adapters and other elements of sanitary fittings should be directed against the flow of wastewater.
3. Each pipe or shaped element must be securely fastened to the wall with mounting clamps at least at two points.
4. All horizontal sections of the sewage system should have a slope in the direction of the vertical riser, which should be at least 20 mm vertically per linear meter of a horizontal pipe.
5. Installation and operation of any shaped elements with signs of visible damage in the form of chips, cracks, ruptures and other defects is not allowed.

Tip! To facilitate installation and ensure the tightness of the connection, before installing the pipe in the socket of the shaped element, it is recommended to grease its side part 50 mm from the end face with sanitary silicone sealant.

Conclusion

After reading this article, it becomes clear that an independent replacement of the sewage system in an apartment is quite within the reach of any housekeeper, and you should not involve a professional plumber to do this simple work.

For more information on the subject of interest, you can watch the video in this article or read similar materials on this subject on our website.