Wall cover: how to seal joints?

When it comes to the professional installation of wall coverings, uncertainties often arise. In particular, how to handle the joints, is often not clear. An answer to this question for all types of wall coverings can be found in this post.

wall coverings

The wall coverings can be divided into different types:

  • Wall coverings with natural stones
  • Wall coverings with various sheets
  • Wall coverings with concrete parts

As a special form, there is still the cover of masonry crowns with monk and nun roof tiles. This type of cover with traditional roof tiles is used very rarely today.

Purpose of the cover

Covering the masonry top edge should prevent rainwater from entering the masonry over time. This would result in moisture damage and within a few years the destruction of the wall by the moisture load.

Therefore, DIN 1053 requires one for all masonry crowns that do not have a steep slope waterproof Seal. This not only affects the cover itself, but also the joints between the covers.

Joint sealing with natural stones

The joints between the individual natural stones must be sealed with a Fudgendichtmittel that is suitable for natural stone. Basically, the double layer of sealing sludge provides additional protection, but joint sealing is nevertheless essential.

When using sealants, it is essential to ensure sufficient suitability for the respective type of stone (for example granite), as otherwise the cover may be damaged and discolored.

Joint sealing with metal sheets

With metal sheets one can fall back on usual, permanently elastic sealing means (for example silicone). However, it should be noted here that it is neutral-crosslinking silicone.

Joint sealing for concrete parts

For concrete parts a sealing of the joints is basically not mandatory. The mortar bed and the sealant layer usually protect sufficiently here. But you can also mortify the joints.

Tips & Tricks

Silicone joints are maintenance joints. This means that a silicone joint must not be regarded as permanently impermeable, but must be constantly monitored and, if necessary, repaired or renewed.

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