Renovate the facade: when is this project worthwhile?

The outer facade of a house is by far not only the optical adornment, it is also shield and shield against the weather. In the best case, it has a heat-insulating effect and is immune to rain, wind, frost and heat. Of course she should also look beautiful, that's no question. A thorough renovation brings an old facade back to perfection!

The first plans for your renovation project

When you want to renovate your façade, it is worthwhile first to take a closer look at the upcoming work. This is best done by talking to a local expert, because as a layman, one often overlooks the one or other necessary step.

Perhaps a closer examination of the facade to be renovated will be required to determine whether there are still hidden defects. These redevelopment measures could be suitable for your facade:

  • Knock off plaster and rebuild
  • energetic renovation
  • Sealing connecting joints
  • other sealing work
  • Hydrophobizing of clinker
  • Descaling of clinker / masonry
  • mold remediation
  • Repairing mortar joints
  • Fill plaster holes and cracks
  • color redesign
  • Removal of algae and moss
  • complete cleaning
  • Covering with decorative plates
  • Tiling of facade parts

Depending on the defects resulting from the closer inspection, a different approach is recommended. Sometimes it is not that costly to renovate a facade - but in other cases a whole mountain of work follows.

Attention: There may be insulation required!

You are not planning an energetic renovation of the facade, but your house is uninsulated or has an old insulation? Then it may well be that your renovation work trigger a Dämmpflicht.

When renewing the exterior plaster or attaching a new cladding, a fixed, maximum U-value must result afterwards, which is specified in the EnEV 2014. We advise you to inquire with the responsible building authority!

Attention with mixed masonry as underground

Are there quite a lot of eruptions and cracks in your plaster? Then it could be on the underlying masonry, which does not provide a homogeneous surface. Many a home builder puts bricks next to sand-lime brick and does not calculate the different absorption and shrinkage behavior.

The strength of both materials also differs, as does the thermal insulation value. The plaster can not compensate for the different movements of the ground and therefore breaks in different places.

In this case, the complete coating must be removed! The façade requires a reinforcement and as elastic a new plaster as possible. The primer should be adapted to the heterogeneous brickwork.

Tips & Tricks

Under certain circumstances, an old plaster can also serve as a carrier for a new plaster. It is important that the coating adheres firmly to the substrate and has a reasonable absorbency.

Product Image: Werner Rebel / Shutterstock

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