How to make waterproofing yourself in the basement room

Recommendation points

Previously, it was not allowed to place residential and industrial premises on the basement floors of houses. But with the beginning of the restructuring, more and more basements are transferred to the housing stock. And since the houses were built a long time ago, the waterproofing of the foundations has already fallen into disrepair. The article tells about what to do if it is impossible to restore the waterproofing of the foundation from the outside, what materials and tools are needed for this.

Basement floors are waterproofed at the stage of building a house. However, often unscrupulous builders do it badly or even forget to waterproof the foundation. If only technical communications are located in the basement, then the flow of rain and melt water will be noticed only when the foundation begins to crumble. And if there is a store or living space on the basement floor, then a leak will create a lot of trouble. The most reliable way to eliminate a foundation leak is to dig it out from the street side to the full depth and make a new waterproofing.

This is in theory, but in practice it is not always possible to dig a hole two meters deep near the house. If it is not possible to make waterproofing outside, then it can be done indoors..

Required tool

In order to waterproof the basement, the following tools are required.

Perforator for knocking out seams and removing old plaster.

Waterproofing from the inside

Industrial mixer for preparation of waterproofing mixture.

Specialist advice

Suture knife.

Waterproofing tool

Large brush (brush) for applying primer and waterproofing mixture.

Ground floor


From the materials you will need:

Primer “Betokontakt”, two-component dry mix “Birss” .

Waterproofing material
We make repairs ourselves

Getting started

First, you need to clean all the plaster from the walls with a perforator to the foundation blocks.

DIY home repair

Since the seams between the foundation blocks are the most common places for water to flow, they must be sealed first. For this it is recommended to use a special two-component mixture “Birss”. It consists of quartz sand, a mixture of cements of different consistencies and various chemical additives. Before sealing, it is necessary to clean the walls from plaster and process it. Before you start waterproofing the seams, they must be knocked out to a depth of at least five centimeters. In order to knock out the seams, you need a puncher. After that, you need to treat them with deep penetration soil in order to fix them..

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Then you need to prepare the dry mix “Birss”. To do this, pour the liquid component “Birss. Germoplastic “and to it, constantly stirring, slowly add dry mixture” Birss “. Usually this mixture is diluted in proportions of one to three. In order for the mixture to mix better, it is best to stir it with an industrial mixer. Since after mixing the solution becomes creamy, a little sand should be added to it so that the mixture thickens and it can be used to clog the seams. As a rule, seams are clogged along the entire height of the wall.

We build a house ourselves

After all this has dried, it is necessary to apply Betokontakt soil to the concrete blocks. This should be done so that the coating that follows sticks better to the wall..

DIY house

After that, in order to improve the waterproofing properties of the wall, the Birss mixture is applied with a brush. This should be done in two layers. The first layer is applied from left to right, and the second layer is applied from top to bottom.

Do it yourself

Then, after the waterproofing has completely dried, plaster can be applied to the wall.

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