Drainage of the foundation with their own hands - how to protect the foundation by using drainage

If the foundation of the house is constantly in wet soils, this will lead to unpleasant consequences - walls and windows and doors may be distorted. Also, a fungus can appear on the interior walls. This can be avoided if you arrange a foundation drainage with your own hands.

Preliminary works

Drainage of the foundation with their own hands - how to protect the foundation by using drainage

Before you start working directly on the drainage, you must first make a thorough waterproofing of the foundation. In order to carry out these works, it is necessary to prepare the foundation.

  • A ditch is digging along the perimeter of the house in order to reach the foundation of the house. The excavated soil is deposited next to the trench, so that after the completion of the work, it is backfilled. The size of the trench in width should be up to approximately 1 m.
  • After excavation and foundation of the foundation, it is carefully removed from the soil, and also remove the old waterproofing.
  • Then the foundation must be thoroughly dried. For this you can use different types of hair dryers and burners, but it would be better if the foundation dries in natural conditions.
  • To prevent anyone from falling into a hole by chance, they enclose a trench around the perimeter and light it up for the night.

Drainage of the foundation with their own hands - how to protect the foundation by using drainage Waterproofing the foundation with liquid rubber

Foundation waterproofing can be depending on the type : roll, pasting, coating and penetrating. The selected type of waterproofing will dictate the principle of drainage.

  • In practice, waterproofing is the most popular waterproofing, in which the foundation is subjected to treatment with bitumen mastic. This method ensures long life and reliability. When the basement is drained, such waterproofing is combined with gravel material with which the trench is filled up under the drainage.
  • Waterproofing plays an important role, but even without it, the filling of gravel will allow water to pass well and divert it from the foundation. This means that the gravel layer for drainage plays a significant larger role than the treatment of the foundation with bitumen. Gravel is very important, as water will flow through it to the perforated pipes. In addition, this material additionally ventilates the foundation.
  • Wrap material called geotextiles is important in the drainage device. This material should be a completely wrapped layer of gravel to avoid silting and clogging with fine particles. In the absence of geotextiles, the drainage system will quickly cease to fully perform its functions.
  • Gravel has another important advantage over other types of drainage material - it does not shrink. This positive quality can be used at the next blind area device, so it is not necessary to wait for a long time until the filter material is completely settled and settled. Gravel does not shrink because every layer is carefully tamped. A special machine is used for better sealing of the filter bed.

Drainage of the foundation with their own hands - how to protect the foundation by using drainage Gravel of different fractions

Although gravel is expensive, still preference it is desirable to give him. You can certainly use a cheaper material, but as they say "miser pays twice." This means that with a cheap filtering material, the durability of the system cannot be guaranteed and, most likely, the drainage system will have to be redone in a short time. With gravel backfill, durability and reliability are guaranteed.

Other materials have less influence on the quality of the drainage system, but still, due attention should be paid to their choice. Perforated drainage pipes must be of high quality. Be sure to protect drainage geotextile material. Also, high-quality and reliable should be plastic manholes and pumping equipment.

Work on the construction of the drainage system

Drainage of the foundation with their own hands - how to protect the foundation by using drainage

The ditch around the perimeter of the foundation of the house is dug, the waterproofing is done - you can arrange a drainage around the foundation.

  • A distance of 1 m is measured from the foundation and a recess is made along the contour around the house with a mark slightly below the foundation. The width of the recess should be oriented to the diameter of a perforated pipe of 110 mm and dumping on both sides of a 10 cm drainage product. In total, about 30 cm is obtained.
  • Then the bottom is covered with sand, the layer of which should be up to 10 cm thick At the same time, a slope of 1 m should be 1 cm.
  • A geotextile material is laid on the sand layer, the width of which is 1.3 m. The edges of the geotextile are fixed at the top. The material is carpeted with a 10-centimeter layer of gravel.
  • With a known slope, drainage pipes with perforated surfaces are laid.
  • Over the pipe, another portion of gravel is poured, which should cover the drainage product by 10 cm.
  • The gravel is covered with geotextile on top, the edges of which are fastened together.
  • The pipe is taken away from the building at a distance of at least 5 m and a water intake is installed at this place. It should lie below the pipe at 1 m, while not reach the groundwater.
  • Geotextiles are placed in the receiving water and plastic container with holes made at the bottom is installed into it.
  • The side container is sprinkled first with gravel and then with soil.

The installation of the drainage system is completed by installing a manhole.


This video will not only help to properly drain the foundation, but also tell about waterproofing:


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