Build Daily


August 12, 2017 18:06

Warming of sewer pipes .Methods and materials

Sewerage - is an essential element of almost every buildings.If you properly care for the drainage system, it will last you much longer.The main point in the care of sewer pipes is their insulation.


Why should insulate pipes

Many owners of country houses, one way or another, are faced with the problem of warming of sewer pipes.Many people think that do not need to.Experts believe differently.The need for insulation of pipes will depend on the climate zone, as well as construction technology and communications pass.

If the building was built in the area where the temperature rarely drops to minus one degree, then insulate pipes is not necessary.But if the building is built in an area with harsh climate and frosty winters, the warming of sewer pipes is considered mandatory.


There is another option, further protect the pipe is not necessary - when the communications are laid at a certain angle and are lower than the layer of frost.

necessary to perform thermal insulation of pipes, if:

  • pipeline passes are not in a straight line, and with the turn;
  • depth of two feet of sewer pipe ;
  • when there is a slight bias communications (less than half a millimeter per meter running);
  • when the slope of pipes, on the contrary, a significant and exceeds half a centimeter per meter running;
  • when pipes are often clogged;
  • to the pipe does not burst in the cold (due to the temperature difference);
  • to in the cold in the pipe does not freeze waste water, turning into an ice jam.

In any case, insulation sewer pipe will not be superfluous in the street and indoors.

materials for thermal insulation of pipes

There are materials that can be used to insulate pipes in the ground and in the house.

types of insulation

For warming sewer pipes in the ground are used:

  • fiberglass wool.This material was ten years ago was considered the only insulation for pipes.Now technical wool is rarely used because of its styling requires additional use of auxiliary materials - waterproofing.The result is that the efficiency of this material will be low;
  • basalt insulation - easy to assemble and has good insulating properties.Among the deficiencies noted the high cost of the material;
  • polystyrene foam - thermal insulation material is demanded.It has good performance, easy to assemble.It is considered a budget option;
  • polyurethane foam, like its predecessor, polystyrene foam, well-kept warm.It has the kind of "shell" in which "wrap up" the sewer pipe.On sale you can find two types of pipes - ordinary and insulated.The last release in the shell of polyurethane foam.In this case, installation of pipe is greatly accelerated;
  • Penoizol - has a dual action: completely isolates the sewer, as well as removes excess moisture from the soil.

For warming sewer pipes in the room used:

  • polyethylene foam.A common type of insulation for the pipes.It allows you to easily and quickly insulate pipes in the apartment.

in quarts

How to choose insulation?

on the street must be taken into account when the protection of the sewerage system, insulation must not harm the environment and cope well with its task.

consider more popular types of insulation: polystyrene foam, foam and mineral wool.

foam looks like half pipe, connected to each other by special fasteners.

first two heater have several advantages:

  • are lightweight, so they are easy to transport and install;
  • easily perform the installation work;
  • have a long service life;
  • environmentally friendly material;
  • have an affordable price.

Due to its uniqueness, the shell of the foam can withstand any temperature and temperature fluctuations.


Speaking of durability, the insulation foam and polystyrene can last fifty years in a row.It happens so that the sewer pipe fails earlier than the heater.

foam may be installed both indoors because it self-extinguishes and if ignited will burn a maximum of two seconds.

If you decide to insulate the pipe the old fashioned way - mineral or glass wool, it is desirable to familiarize you with some nuances:

  1. This type of insulation can not be called environmentally friendly material because mineral wool contains a large amount of corrosive materials that deplete the soil.
  2. Over time, the insulation shrinks and cracks are formed on it.Because of its characteristics to absorb moisture is necessary to apply additional sealant to attach material.

Warming sewer pipe

street to protect pipes from freezing during the cold season, they need to be warmed.

There are ways of thermal insulation:

  • engineering;
  • with an insulating material;
  • active.

first method considered the most simple, because when laying sewage pipes, they should be located below the level of soil freezing.Based on practice, the optimum depth of the pipes is two meters or more.It depends on which region you reside.

Insulation of pipes is performed according to this scheme:

  1. is prepared trench certain depth so as to be able to put a pipe with a slope of one centimeter per meter length.The depth of the pipes can be found in the table.It has its own table for each region.
  1. Then at the bottom of the trench to do a bed of sand or gravel (grain size of not more than twenty millimeters).The layer thickness should be not less than ten centimeters.
  2. Works on laying of sewage pipes.
  3. must now fill the tube with sand or fine gravel.The layer thickness should be not less than twenty centimeters above the pipe.The layer must be well compacted.
  4. In order to avoid the question, where to take the gravel, use material that has been removed during the preparation of the trench.


There are a number of points, because of which this insulation method can be inefficient.For instance, soil structure and proximity to groundwater, the presence of insects and other harmful substances that can destroy the structure of the pipe.

With this method, you must also take into account the probability of a gust of sewer pipes.In order to restore the damaged area, it is necessary to dig up the pipe or removing it completely, to replace a new one.

second method - pipe insulation thermal insulation materials.Depending on the situation, use a different type of heater.

How to perform insulation works sewer pipes with his own hands:

  1. Mark the location of the trench pass.
  2. Prepare a trench sixty centimeters in width and depth according to the project, plus a margin of five to ten centimeters.
  3. Trench is necessary to equip with a slope to allow gravity flow of fluid passing through the tubes.
  4. At the bottom of the trench lay a layer of sand or gravel (ten centimeters thick).Seal it.
  5. Place the pipe on the surface near the prepared trench.
  6. Perform serial connection pipes.
  7. Treat the edges of the pipe itself hermetic seal.
  8. Now you can put on the pipe insulation and secure building Skoch.
  9. The tube should be lowered into the trench, connect and cover layer of gravel or sand.
  10. Perform final backfilling with soil.It is important to ensure that there was no large stones and glass.

laying in a ditch

third method active warming is considered the most effective, but also more expensive.It lies in the need to run parallel to the sewer pipes electric cables that will warm effluent.The heating system is regulated by a temperature sensor that is connected to all equipment.If the water inside the tube cools to mark zero degrees, the sensor is activated and starts to heat the cable conduit.As soon as the temperature rises - the sensor is automatically deactivated.

This method of insulation, though considered to be effective, but refers to the volatile and is used in exceptional cases where the two previous options have been ineffective.Keep in mind the fact that if not further insulate pipes with insulating material, it turns out that the cable will warm the ground, not your tube.

Electrical method

How to perform insulation of sewer pipes, watch this video: