Mending the rubbing - easier than you think

Cleaning damage on the wall not only look ugly, they are also weak points. Moisture penetrates the building fabric and the façade loses its function. To prevent this from happening, you should repair damage quickly.

Repairing rubbing, why is that important?

The rubbing plaster for the outer facade has one thing in common with all other types of plaster, it protects against weathering, solidifies the surface and seals the masonry against moisture. No matter how small damage, over time can lead to large-scale cleaning withdrawals.

If major damage has occurred, it can often only be remedied with great effort and effort. You can avoid this by repairing minor damage to your rubbing compound yourself.

How should you proceed with the plaster repair?

Before you go to work, a few basic questions need to be clarified. If you do not know which grit your rubbing plaster has, it helps to determine the thickness of the rubbing plaster or to estimate the size of the stones embedded in the plaster. Grit and strength of the rubbing plaster are closely related. The relief formation of the rubbing plaster results from mineral granules in combination with chemical additives.

If a larger or smaller grain size is selected, the wall can not be planed afterwards, which is not particularly noticeable on large surfaces. Before you buy the right finished mixture, you should first search your plastered walls for damage in order to estimate the extent of repair work.

Which rubbing plaster is suitable?

Rubbing additivesadvantagesdisadvantage
Synthetic resin plastervery elastic, no cracking, fast curingAlgae formation possible
Mineralputzbreathable, high adhesion, no moldtends to crack

Rub rubbing with the right technique

If you have to apply the rubbing inside for a repair, this requires the same procedure as for the outside. In both cases, you should try out the right rubbing technique. In order to get that out, a test on a wooden board is recommended. Rub the plaster in different directions to get the same texture as the rest of the wall.

How should you proceed?

  • Look for damage or cavities
  • Gently tap off loose rubbing plaster
  • Free the dust spots to be repaired
  • If the flush is damaged, it must first be repaired and dried.
  • Paint a deep reason
  • If the rubbing plaster on the outer facade is to be repaired, this must be done in dry weather.
  • Apply the rubbing plaster with a wall trowel and then remove it flush with the trowel.
  • Allow to dry, then rub the plaster with a floater.

Tips & Tricks

Gain accurate information about the used rubbing compound so that the grain size and the thickness of the coating match. If necessary, get the advice of a specialist.

Product Image: kangwan nirach / Shutterstock

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