Gypsum plaster in the bathroom

Gypsum plaster must not be used in damp rooms or wet rooms. However, contrary to many prejudices, the bathroom does not belong in these categories. The wall design in the bathroom with gypsum plaster is permitted. It is an attractive alternative to tiles.

Baths are not damp rooms

Although the surfaces in the bathroom, including the wall surfaces, keep getting damp and condensation regularly forms there, this area is not considered a damp or wet room. Real wet rooms are among other saunas, public baths or great kitchens. In wet rooms, so large amounts of water arise that they must be derived via a floor outflow. In the bathroom of a residential real estate, however, only a usual and average humidity is created. In these rooms, gypsum plaster is allowed. By splashing or water vapor, as it is created in the bathroom, gypsum is not affected.

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Gypsum plaster instead of tile

In the bathroom do not necessarily have to prevail tiles. Decide for a gypsum plaster in the bathroom, result in many design options. When choosing the colors you have to consider some principles. With dispersion color the plaster is closed and can no longer regulate the room moisture. This promotes mold growth. Pure silicate paints are also unsuitable. This is where chemical reactions occur with the gypsum plaster. The paint cracks. Before painting, treat the gypsum plaster wall with a special deep primer (4.81 € on Amazon *) . Once it has dried, you can paint the walls with a silicate emulsion paint that is approved for gypsum plaster.

If installed correctly, no impairments

Gypsum plaster is damaged if it is kept permanently wet and cannot dry out sufficiently. It becomes crumbly and peeled off. Its mineral components ensure that microorganisms such as mold cannot find food on it. The gypsum plaster itself does not go moldy. If you find mold on a plaster of paris surface, the breeding grounds are elsewhere. Mold forms because paint, paste and wallpaper were improperly applied. Dirt and dust can also promote mold growth. These foundations must be removed from the mold. Check the ventilation and insulation of the affected room. This can also be the cause of mold on gypsum plaster.
It is permissible to lay tiles on gypsum plaster if the work is carried out in accordance with the specified DIN specifications.

Technical data sheets and DIN V 18550

The correct use of plaster of paris in domestic living areas and in commercial and public damp rooms is specified in various technical data sheets. DIN V 18550 precisely defines which rooms are considered damp rooms. According to this definition, bathrooms and kitchens are not included in residential buildings. You are not exposed to any above-average humidity. The relevant technical data sheets describe, among other things, how gypsum is to be used. Gypsum plaster is mentioned there as a suitable substrate for tiles in the bathroom. In order to rule out subsequent moisture damage, the building regulations should be carefully observed.

Tips & Tricks Gypsum plaster can be used in all interior spaces in residential properties. Uniformly plastered walls look harmonious. If the work is carried out by a company, the use of a single type of plaster is more cost-effective. It can efficiently process all surfaces with one material.