How to make a storm drain at home? Overview and device, features, installation and installation + Video

How to make a storm drain at home? Overview and device, features, installation and installation + Video Storm sewage at home: device, features, do-it-yourself installation. Water is an important compound that makes life on Earth possible. But due to weather conditions, which are associated with precipitation or flooding, there can be troubles with different buildings. So, due to heavy rainfall, the roof can begin to leak, and from the accumulation of water underground, the foundation and basement, as well as walls, can suffer. After some time, the foundation will be destroyed, and due to unfavorable factors, this can happen much earlier than the expected time.

Since seasonal rains are a constant phenomenon on the territory of Russia, care should be taken and the risks of destruction of the foundation should be reduced, which is possible due to the creation of a storm sewer in a multi-storey building.


How to think over such a sewer system?

Very important . Residential buildings have water outlets, since this device must be in every house as prescribed by law. This will ensure the safety of the residents of the house.

The sewerage system and storm water drainage are very different.

Although the functionality is similar in many ways, there is still no need to confuse these systems. For example, a drain in the sewerage system is required to remove waste water from apartments. With the help of fittings and pipes, it leaves the bathroom and kitchen.

How to make a storm drain at home? Overview and device, features, installation and installation + Video At the end, the water ends up in a cesspool or septic tank. The difference between a storm sewer system in a multi-storey building is that it removes water that accumulates on the roof due to precipitation.

In this case, water moves through trays, pipes and storm drains. As a whole, these elements are responsible for collecting and removing storm water from the roofs of the house. As in the case of the internal sewage system at home, water is discharged through pipes.

As you can see, there are similarities, but the systems should not be confused. By itself, a storm sewer can be of an internal type and an external type.

The second is often used in private houses, while all elements of this sewage system are mounted outside.

Please note, that when installing gutters outside, they should be insulated for the winter, so that ice does not form.

If we consider the internal systems, then they are used only for the equipment of storm sewers in multi-storey buildings. These structures usually have flat roofs. By the way, in this case, the structural elements are installed inside the building, which means that the structure will not freeze and it does not need to be insulated.

There is a storm hole on top. Most internal water drainage systems are made of the following elements:

  • Riser - the main pipe.
  • Funnel.
  • Release.
  • Drainage.

Not to use the storm system is not that impossible, but not necessary, and the reason for this is flat roofs.Water accumulates well on them, and this is especially noticeable if the roof of the house is old (you are probably familiar with families who live in old houses on the top floor - they are often not happy with this).

Materials for installation

Manufacturers are constantly improving and producing as many configurations of the storm system as possible. Such products compare favorably with their shapes and materials of manufacture. The most affordable and most popular are galvanized elements.

They are often used to drain water in houses with several floors, but they are often used for private houses.

Another popular option is plastic. The gutter made of this material is reliable and durable. Plastic is a durable material that can withstand temperature changes well. In addition, it is inexpensive.

The advantages include the fact that it does not corrode and is easy to install.

The most expensive material for the arrangement of storm sewers in a multi-storey building is copper. This is due to the fact that copper systems are the most reliable and durable. In addition, they cope well with heavy loads, but plastic is preferable for the internal drain.

Storm system device

How to make a storm drain at home? Overview and device, features, installation and installation + Video The internal sewerage system is used in cases where when it is not possible to build a conventional system.

As a rule, the internal system is mounted on a flat roof. Doing everything with your own hands is not as difficult as it might seem at first. Work should be started from the roof, since rainwater collectors are installed on it. A prerequisite is that there should be several such receivers, and a slight slope should be provided to each of them.

This will make it possible not to form stagnant water, but to immediately drain.

Funnels can be of different diameters. If a drainage system is not provided, trays should be placed next to the building, into which water will flow through pipes. If there are no trays, then the water will flow down the blind area.

Important! When installing, comply with all the requirements of the storm sewer in a multi-storey building SNiPu.

Funnels and drainage

The most important element of a drainage system is funnels.

A stream of water will be directed to them. Such products are made from different materials and are of two types:

  1. Flat.
  2. Bell-type.

Each of them serves for specific purposes. For example, for installation on a horizontal roof of an asphalt type, you need to use a flat funnel, and for an inclined roof, a bell-type roof.

For use on flat roofs, it is better to use cast iron funnels, as they are excellent at filtering water from leaves and debris.

Cast iron funnels consist of the following elements:

  • Removable cover with holes.
  • Cylinder-shaped cast iron grate.
  • Body that will be installed in the ceiling.

Please note that the joints of the funnels and ceilings must be well sealed, otherwise water will penetrate under the roof.

Drainage pipes and risers are usually made of sheet metal, cast iron or polyvinyl chloride. You should know that every system needs to be well maintained, and storm sewers for a multi-storey building are also no exception to the rule.

To do this, make inspection holes and provide full access to them. They should be 1 meter above the floor.

Installation diagram

To carry out the installation work correctly, you should familiarize yourself with the work diagram:

  1. First, we mark the places where the riser mounts will be installed.

  2. After we clear the place, and calculate where the hole will be located for leading the pipe to the roof.
  3. After that, we determine the location of the funnels.
  4. We make holes in the wall for pipes.
  5. Fix the fasteners.
  6. Next, let's install the exhaust pipe.

    We connect it to the storm sewer.

  7. All system leads must be well sealed. It is important that the selected sealant is resistant to temperature changes.
  8. Install a vertical riser.
  9. Install inspection hatches in the required pipe sections.

  10. Equip node joints and piping.
  11. Close the slopes of the funnel.
  12. Install the protective grill.

After completing all the actions, the system is considered ready. Now all that remains is to check the performance, and in order not to wait for rain, you can simply pour water on top.


Before installing a storm drain, read the simple guidelines. By applying these tips, you will be able to deal with everything quickly and correctly, and the finished structure will work efficiently.

  • Install the roof outlets so that they are evenly spaced over the entire roof area.
  • Be sure to slope towards each funnel, or select lower roof sections for placement.
  • Make a distance between the funnels, but it should not be more than 15 m.

  • Pipes that are located in the shafts should be covered with panels or insulated.

Following these simple tips will make installation and operation easier.


There are several types of trays for storm sewers. Each of them has its own advantages. According to the material of manufacture, they are:

  • Made of plastic.

  • Made of metal.
  • Composites.

Plastic structures have a lot of advantages: ease of installation, ease of transportation. They are resistant to moisture and temperature drops, and are also reliable and durable. In addition, the price for such products is reasonable.

Concrete trays are simple and have good flow capacity. In addition, they are resistant to aggressive environments, but very large and susceptible to moisture.There are certain difficulties during installation. The pluses include the ability to install any protective grille.

How to install the gutter

Install the gutter system so that at any temperature effective drainage of water from the roof is possible.

Water intakes do not need to be placed close to the walls, as they can freeze there, as in frost. Ideally, they are placed longitudinally to the roof.

When installing the gutter, follow these tips:

  • Divide the roof surface into several zones.
  • One riser is about 150 m 2 .
  • A slight slope to the gutter is required (about 2%).

  • Route the manifold to properly install the indoor gutter. It needs to be connected to the general sewage system.
  • When installing a gutter system, choose pipes with a diameter of 11 to 17 cm. In length, they should be from 0.7 to 1.

    4 meters.

  • To calculate the cross-section of the pipe, use the formula - for 1.5 cm 2 outlet water from 1 m 2 .
  • Liquid can be removed to the outside of the storm drain.
  • All sections of the risers should be located in places where there is heating.

Important! All connections must be well sealed and the roof deck must be waterproof.

And one more thing: take care of the cleaning methods in advance.


Now it has become clear to everyone that the storm sewer in a multi-storey building is an important element of any building. It protects both the residents and the building. The price of the structure will depend on the material chosen.

By creating an internal drainage system, you can compensate for the negative effects of rainwater. This will direct the water to the collector. The design of the drainage system should be carried out taking into account all the features of the building.