Clean the cornices and integrate them at the edges of the wall

The plastering of cornices is in most cases a mixture of plaster application and filling. The stamped profiles have holes and slots, which lead to a mixing of plaster and mortar or adhesive. Often, the first fixation is achieved with selective bonding and ensures durability.

Mixed bonding, plastering and filling

Since most plasters and mortars fade when setting, the adhesive power should not only wear the durability of the cornice. On all wall edges, for example, around window reveals, the corner strips can be pre-fixed with supporting adhesive. This is equally possible on concrete, brick and plasterboard.

Similar to the installation of a plaster molding, the corner molding is integrated into the wall surface by "glueing". The thin wings lie on the edge sides and are covered by trowelling and thus fastened simultaneously.

Primer because of the suction behavior

Plasters and mortars disappear during the setting process. In order not to impair the durability of corner strips, it is important to comply with all pot and drying times and setting times specified by the manufacturer and the manufacturer.

Depending on the nature of the substrate, the suction behavior must be adjusted. A primer requires the following substrates:

  • concrete
  • brick
  • natural stone

No primer is necessary at:

  • Multipurpose fiber boards (MDF, OSB)
  • Rigips
  • Ceramic substrates (tiles)
  • Burnt bricks

Level and even edition

Especially with corner strips of softer metal sheets such as aluminum can easily bend during processing and processing. In order to make the plastering a secure embedding with a firm grip, the position of the last wing on the wall edges should always be checked carefully.

If the texture of the wall and the surface are uneven, the edges should first be filled with "hands-free" in advance. At corrected and clean right angles corner strips can best fulfill their protective function.

The application layer during plastering must level the material thickness of the last wing to the remaining wall. Waste plaster layers can be realized up to about two millimeters difference to the wall surface, or later visible. It also depends on the grain of the plaster or mortar, which should contain sand with 0 / 4er grit.

Tips & Tricks

As with all plastering work, you should follow the craft rule "soft on the hilt". You should always apply stronger plaster and mortar first when plastering and filling.

Product Image: natali_ploskaya / Shutterstock

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