Barrier plaster as a tight plaster for basement walls

Moisture is a big problem that can be found in many basements. Here special barrier plaster is used, which has the task of sealing damp walls from the inside and thus protecting against mold. Properly processed, barrier plaster is even resistant to water pressure with a pressure of up to five meters. Read here how you can protect damp cellar walls from flaking plaster, salt efflorescence or mildew.

Moist walls in the basement area are a big problem

Moist cellar walls are noticeable in different ways. Often it is salt efflorescence or sloping cleaning materials that make you aware of damp walls. Here a quick action is required, so that the damp walls can not damage the basic substance of the house. It is very important to expose and restore the vertical sealing of the masonry from the outside. However, this is not always possible without further ado. Then special sealing products must be used, whose components are coordinated and which can be used together. The renovation takes place in several steps:

  • The first step is to do some preliminary work, like removing old coatings and exposing the masonry.
  • Now the basement wall must be provided with a primer from the inside.
  • Now, unevenness in the wall is filled with a suitable filler.
  • Now finally Sanierputz is applied in the form of barrier plaster.

Barrier plaster and its special properties

Due to its special properties and high mechanical strength, no salts or other foreign substances are stored in the plaster layer. In addition, barrier plaster adheres to wet or saline surfaces. Incidentally, the plastering material is suitable for all kinds of masonry except aerated concrete. You can also process barrier plaster by hand using simple means. Special machines are not necessary.

The problem with only inside sealed cellar walls

If barrier plaster is used, it is applied to the inside of the affected wall. It has special properties that allow the moisture in the wall to remain or penetrate the wall and not get into the interior or plaster. The problem with this is that the moisture can not be completely removed from the masonry. For this reason, it is very important to protect the walls from the outside and to seal the masonry from the outside as well.

Product Image: Dmitry Kalinovsky / Shutterstock

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