Sealing slurry - no chance for moisture

Inadequately sealed floors or masonry can mean expensive renovations. Plinths, basements, bathrooms or the area under the shower need special protection. This can be remedied by sealing slurries that are easy to apply.

Why do you need sealing slurry?

Any moisture in a structure can cause damage. If it comes to light, good advice is dear. Sealing slurries are used to seal external surfaces such as the terrace, balcony, shower or basement floor. They are used in new buildings or renovations and protect against the ingress of moisture.
They prevent mold or fungus growth, damp walls or even stagnant water. Be wise in front of the damage and apply a sealing mud to particularly endangered areas before starting the renovation. This is the only way to protect yourself against rising damp in the long term.

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What does Dichtschlämme?

Sealing slurries consist of a mixture of cement, minerals and additives of plastic. When mixed with water, it should result in a slightly more liquid mixture. Thanks to the cement content, the sealing mud remains breathable after application and the plastic content ensures a certain flexibility. It makes it frost and weather resistant at the same time. Sealing slurry fill the pores and thus form a closed seal.

Where is sealing slurry u.a. applied?

  • Sealing of balconies and terraces
  • Sealing the floor of a shower
  • Create a splash zone around the bathtub
  • as a horizontal barrier against rising damp
  • Protection against splash water on plinths
  • Sealing of components that will later lie underground

You can seal your pond with waterproofing slurry or protect the base plate under your pool from rising damp with waterproofing slurry.

How is sealing slurry applied?


In order to achieve an optimal result, the surface must be even. This means that both holes and wide cracks have to be filled. All non-sticky components are removed, as well as dirt and dust. Strongly absorbent substrates are pretreated with a deep primer (4.99 € at Amazon *). This must first dry completely before the sealing slurry is applied.

Apply sealing slurry

The ready-to-use mixture from the hardware store is mixed according to the manufacturer's instructions. Stir the mixture until a lump-free mass, the so-called sludge, has formed.
You can apply the slurry with a brush, with a roller or spatula or even spray it on. Work on the walls first, then the floor. The transitions in corners and between wall and floor are to be smoothed out with a fillet.
The thickness of the order is only a few, up to a maximum of 5 millimeters. It is usually applied in two layers after the first layer has dried. For optimal curing, make sure that the sealing slurry is not exposed to direct sun, drafts, rain or frost.

Tips & Tricks If the surface for applying the sealing slurry is very dry and highly absorbent, you should moisten the surface beforehand.